large ground is needed to reduce electrical noise and interference through ground loops and to prevent crosstalk between adjacent circuit traces and need a ground tag on uncal sash shield plus 5volt 2amp power pack adding gnd on dasiy chain pin 4

[psmmacker]

new.gnd point direct to stm 32 discovery bottom right gnd pin soildered both and bent them down carefully

i am also using a 5 volt 2 amp power pack as my 5volt 10 amp ones are to high

and seem they can cause issues

my paypal  paypal.me/pmacker

i had added wires to the gnd i solidered on top gnd of the stm and 

stuck the wires in the gnd pins into the shield

 

use 110 volt us or 240 volt as if the power pack too close can make noise issues 

In digital and radio frequency PCBs, the major reason for using large ground planes is to reduce electrical noise and interference through ground loops and to prevent crosstalk between adjacent circuit traces. When digital circuits switch state, large current pulses flow from the active devices (transistors or integrated circuits) through the ground circuit. If the power supply and ground traces have significant impedance, the voltage drop across them may create noise voltage pulses that disturb other parts of the circuit (ground bounce). The large conducting area of the ground plane has much lower impedance than a circuit trace, so the current pulses cause less disturbance.

mount with earths rev3.2 shield need these added x2 on top of shield

1 x one from power pack to shield and

1x from shield to panals gnd

 

earth with screw from power pack need some tags around with nut and bolt

 

gnd to shield  p2.5

 

earth on pinball output side black tape covering mounted hole on sash shield i used the 

 may able to tag panels grounds to there aswell 

made a earth tag and screwed it under shield may need i a earth tag 

 

 

p5 marked cap c16 good gnd seems ok to use that as a gounding point rev 3.1

 

 

 

 

used some.old pins from a old tv to make a.rgb pin for 4 pin to power pack gnd nice caps lol

if anyone wants to help me on this idea or can explain why this works as i have biplor a mental heath condition and unemployed and worked hard with this project

[email protected] my paypal address thanks for your suppprt and kindness 

as this project has cost me a lot of money over 400$ in panels and 90$ in stm32 discovery boards

alone and 6 of sash shield at 50$  

This delvolopment has i/o loop some of the data coming from the pc usb is also being feed

back into the i/o inputs from the real pinball input hub 14 and trying to process data twice

this can make the panels also double scan and bleed at the same time so leave that side unplug

but keep the hub 75 outputs in where the hand logo said no touching pins with hand

 

 

earth pin added to pin 4 can also be added to any gnd from shield to power pack

as pins have been removed

leave the hun 75 gnds on the pinball panel output do not touch them

soft  ferrite ring wrap around + 5 volt tooken from a led old tv

add me to facebook click link below

https://m.facebook.com/story.php?story_fbid=1276092335846471&id=100003371502890

i had the idear while reparing a laptop display ribbon

as it has some type of metal shielding and wondered

if the panels was flicking or interference

would it be too near power pack or if the

hub 75 aka idc was picking up radio waves as theses cable

carry pwm signals and are thin i also asked aliexpress selllers to make

the cable 3 foot longer as power packs can cause issues and some type of this soft  

 

ferrite rings around the power pack cables may be good to add to hub 74 cable aswell

 

Cln Soft Ferrite Ringould also helpip On Soft Ferrite Rings ip On Soft Ferrite Rings 

see this picture the black is comming from the gnd power pack

then put a hub 75 cable to the duel shield and linked them and that also

help flicking and may be bleeding  so in term 3 gnd pins to rgb panels in

from gnd direct from powerpack gnd = solid gnd 

The 4 pin LED is controlled by stepping the PWM voltage to ground.  The discovery 32  board itself becomes the path to ground.  So you apply power to the Cathode and ground out (or not) the Anodes in order to get a certain amount of colored light, that's why the higher the number the dimmer the LED element.

removed the i/o  input for real pinball and put output only below seem to also help bleeding

it could also be that using all i/o pin all at the same time.on the stm discovery could be a issue as

there is 9 gnd points on each end of the stm i/o pins 

pin disconnected. off real pinball side 

only 1 gnd pin used for pwm on stm discovery but bridged together to the rgb panel input

remove gnd from panels both side only postive 5+ stays from power pack

rev. 1.4 shield p2.5 panels below

 

pin 4 /8 /16 gnd from panel wired into 1 thick cable gnd to gio gnd on stm 32 discovery

 

 

[senseless]

And does it make a difference?

[psmmacker]

yep it stop the flicking i get on the panels only on the left side panel i was getting it on no matter what size the panels was

[senseless]

3 hours ago, psmmacker said:

yep it stop the flicking i get on the panels only on the left side panel i was getting it on no matter what size the panels was

Nice! WIll do some shielding myself then. I cannot hurt :).

[psmmacker]

some how only 1 gnd on I/0 pins from stm should be use and not 

all 8 as i think we have a pwm gnd short causing bleeding

and extra leds to flicker on the panels 

also thats why we get red leds light up when no power on the power pack 

but the stm32 discovery is connected via the hub 75 0 volt gnd

thank

paul 

[psmmacker]

On 2017-5-1 at 1:03 AM, ronaldvg said:

Question: yesterday was playing my cab with PIN2DMD perfectly and today I start it and everything that uses the DMD just crashes. After a lot of checking/reinstalling/trying I found that when I change back to the small dmdevice.dll that comes with the installer of VPX everything works again, but the DMD flickers (I had that before but just updated the DMDDEVICE.DLL everywhere). When copying the latest DMDDEVICE.DLL and start a test of Vpinmame, Vpinmame crashes, PinballX does not show anything on dmd

EDIT: I could not let it go, so tested further. DMDEXT did also not find the PIN2DMD. Then I went into device manager and looked up the WINUSB device and deleted it. Then put the LIBUSB32 driver back with the ZADIG utility and it worked ! Using the latest DMDDEVICE.DLL without flickering. I will leave this here for anybody having this problem.

this flickering is a hardware issue not a dll device gnd pin are wired wrong and bridged across 8 pins only 4 GND I/O Pin only

[psmmacker]

On 2017-5-10 at 7:11 AM, senseless said:

And does it make a difference?

 

On 2017-5-10 at 2:02 PM, senseless said:

Nice! WIll do some shielding myself then. I cannot hurt :).

i would hold out for sash shield to be modified on the gnd pins on the stm may be causing the issues need more testng but ya try the soft ferrite rings rods around the power pack cables metal tape see if it works post me your results

a example of pwm dimming circuit notice 1 gnd bottom left black wire was used for this test from the stm32 discovery board to the breadboard 

the usb up the top should by 5volt and the bottom the mini B usb is 3volts

 

 

[psmmacker]

On 2017-5-10 at 7:11 AM, senseless said:

And does it make a difference?

yes if disconect the.real pinball side and put a direct earth from power pack

to rgb panel gnd pin 4 it stops flicking also removing all pins from stm header going to the real pinball input also help but the sd card may have .to be moved to the top of remaining pins above the stm discovery 

[psmmacker]

duel shield work 100 ℅ issue sorted

 

[psmmacker]

On 2017-5-10 at 7:11 AM, senseless said:

And does it make a difference?

bend 2 gnd pin forword bottom right of shield attached earth from power pack. need. to be on the rgb dmd output side as its direct stable gnd

[ibjeepin]

On 2017-5-10 at 5:17 AM, psmmacker said:

yep it stop the flicking i get on the panels only on the left side panel i was getting it on no matter what size the panels was

psmmacker

Love the tremendous effort you have done in getting rid of flickering problems. But I dont see the problem. Can I suggest a HD shake free video of before and after? I would love to see it myself. I assume that you are not putting them in an actual machine. 

 

IBJ

[psmmacker]

On 2017-6-6 at 7:23 AM, ibjeepin said:

psmmacker

Love the tremendous effort you have done in getting rid of flickering problems. But I dont see the problem. Can I suggest a HD shake free video of before and after? I would love to see it myself. I assume that you are not putting them in an actual machine. 

 

IBJ

no only for vpinball and future pinball atm i did have another update from a few days ago in the forum

i send the link 

and will also show y before and after results of course also when making a duel shield with my 3 way idc cable these issue also seem to improve signal so could be a silly wire in the wrong place

paul

[psmmacker]

On 2017-6-6 at 9:40 PM, psmmacker said:

not only for vpinball and furure pinball atm i did have another update from a few days ago in the forum

i send the link 

 

 

[ibjeepin]

5 hours ago, psmmacker said:

 

psmmacker

I am still a little confused here. multiple grounds is not a bad thing nor does it necessarily create problems. Its ground potential differences that generally can. And yes as you have stated more ground is better, to a point and engineered to mitigate stray frequencies from interfering. I think your issue is not ground related but shielding related and your running around trying to solve a proble with another problem if that makes sense. Also on a when you look at printed circuit board on a macro level and look at grounding you will find infinately more "loops" which can be a good thin as they create shields for rf frequencies.  This is where you need a scopes and rf meters etc to see whats going on on signal lines. I think someone else mentioned it here but chokes on signal wires never hurts but can improve things immensly and PC's are dirty dirty noisy things from their shitty chinese power supplies to anything built in china! Including those panels. 

 

Therefore the reason you are chasing this is its not just one issue. Its two maybe more all combining to create the issues you see. Hence the requirement for measurement tools. Just my opinion.

 

EDIT: Take a look inside a well engineered and rf compliant gaming machine, xbox, playstation wii etc, you will see shields within shields and those shields will be connected to and multi layered board at as many locations it can be and that board with have grounds going everywhere, and most like will have a ground layer in the pcb with many through holes etc etc. The only difference one usually sees is power ground as in earth ground and "signal ground" and they will have "potential difference" and is done for shielding reasons and I am sure there are more reasons but I am not an engineer, just a technologist.

 

IBJ

[psmmacker]

12 hours ago, ibjeepin said:

psmmacker

I am still a little confused here. multiple grounds is not a bad thing nor does it necessarily create problems. Its ground potential differences that generally can. And yes as you have stated more ground is better, to a point and engineered to mitigate stray frequencies from interfering. I think your issue is not ground related but shielding related and your running around trying to solve a proble with another problem if that makes sense. Also on a when you look at printed circuit board on a macro level and look at grounding you will find infinately more "loops" which can be a good thin as they create shields for rf frequencies.  This is where you need a scopes and rf meters etc to see whats going on on signal lines. I think someone else mentioned it here but chokes on signal wires never hurts but can improve things immensly and PC's are dirty dirty noisy things from their shitty chinese power supplies to anything built in china! Including those panels. 

 

Therefore the reason you are chasing this is its not just one issue. Its two maybe more all combining to create the issues you see. Hence the requirement for measurement tools. Just my opinion.

 

EDIT: Take a look inside a well engineered and rf compliant gaming machine, xbox, playstation wii etc, you will see shields within shields and those shields will be connected to and multi layered board at as many locations it can be and that board with have grounds going everywhere, and most like will have a ground layer in the pcb with many through holes etc etc. The only difference one usually sees is power ground as in earth ground and "signal ground" and they will have "potential difference" and is done for shielding reasons and I am sure there are more reasons but I am not an engineer, just a technologist.

 

IBJ

ya IBJ pin 4 is first gnd to point from sash also bridge all gnds across each pin on shield

hence the hub 75 has weaking gnds due to thin cables being used  i did have  idear to add a pin4 gnd between panels panels on dasiy chian aslo vpinball usues less current on certain tables then fututre pinball hench why austin power on future pin ball and not flintstones so putting power pack gnd direct to pin 4 gnd stable it because why would u double up gnds you would need extra if the hub75 had 3 already i am i computer enginineer and good shields on pwm data paths help how do we know this flicking due to electinic static radio interfernce as every thing digital and not analoge anymore plus i think the panels should only use 2 inputs not right to left dasiy chain as i conntctiom from the hib 75 should have panel left and panel right hub 75 headers and adding 1 gnd and joining from the panels to 1 or 2 stm pins bring the pc gnd power pack and stm mcu discovery in to a stable gounding making the mcu switch with the mcu chip and usb data sync 

psm

[psmmacker]

10 hours ago, psmmacker said:

 

also this improved add 4 set in duel display 3 way idc also manange to not use one dasi chain on one set of panels

just 2 inputs 

[ibjeepin]

Because pwm and digital runs at frequencies and those frequencies produce electromagnetic waves, digital is worse than analogue. This interferance can induce logic to trigger at an incorrect time possibly slightly ahead or behind a rising or falling signal. If it timing critical as in serial digital data which this is , you may see some crap.  A properly setup logic analyzer might help or in this case one that can look at serial data as well.  I have many analyzers and scopes 3 expensive HP logic analyzers and one with a 2gs scope module and and a cheap PC based one. I also have several Tektronix oscilliscopes, Including an awesome digital one: Rigol DS1054Z  which I would say the best money spent and I almost use this one all the time now ! Remember data is put on a bus and then another line is used to enable that digital data to be read or moved or sent or whatever, then on to the next, so clock timing is critical as well in all types of transfers of digital data. I could go on and on, then there is buffering ; In the case of the panels they expect this serial data with specific timing, levels and voltage (sadly youll never get the specs on this from the chinese unlike real product manufactures of chips etc who give you the logic data) 

 

Here is the main led driver chip on the hub75 Sadly I can only find the chinese but look at page 9 for the timing 

http://www.depuw.com/Public//images/pdf/depuw/DP5020B_REV1.0.pdf

Her is another potential issue when signals are not good enough , one seen lots of this. 

https://www.allaboutcircuits.com/textbook/digital/chpt-3/buffer-gate/

it goes on and on.....  remember its all about timing;  

Here is another problem with digital

http://www.ece.ucsb.edu/Faculty/Johnson/ECE152A/L4 - Propagation Delay, Circuit Timing & Adder Design.pdf

Lastly though based on what I have seen this can also be code related and its timing, But I dont know the code nor have I looked at it but I have seen some funny unexplainable stuff in my real pinball and this setup but I know its input related timing. I am doing this as a hobby therefore not looking to analyze this as its good enough for me to play pinball. I barely have enought time to play around with my machines. I wish I could see a complete high res video of the issue you are having from start to finish. 

[ibjeepin]

  Rewire hub 75 3 way cable for duel display and reuse and a new duel addon to shield pcb design by cable idea and uncle sash

By psmmacker in Pin2DMD, September 22, 2016

New to order from uncle sash a new duel display addon based on my iec wire idea  Should help with no bleeding and will be added to he curent shield with one hub75  femail input to 3 hub 75 output    A new modification  of sasha old shield with out a 2 way cable and a easier method  below hopfully. Sash could design a.3.way iec male board  to support...

•  8 replies

There is another issue how long is your cable, without buffering at both ends this would be an issue just like USB, ethernet etc has distance limitations. you are feeding to multiple devices at once? There are more variable here. 

[psmmacker]

1 hour ago, ibjeepin said:

  Rewire hub 75 3 way cable for duel display and reuse and a new duel addon to shield pcb design by cable idea and uncle sash

By psmmacker in Pin2DMD, September 22, 2016

New to order from uncle sash a new duel display addon based on my iec wire idea  Should help with no bleeding and will be added to he curent shield with one hub75  femail input to 3 hub 75 output    A new modification  of sasha old shield with out a 2 way cable and a easier method  below hopfully. Sash could design a.3.way iec male board  to support...

•  8 replies

There is another issue how long is your cable, without buffering at both ends this would be an issue just like USB, ethernet etc has distance limitations. you are feeding to multiple devices at once? There are more variable here. 

ya pwm timing and voltage drain work side by side as power pack are switching at differnt point of time

of currrent need some thing added scmitc trigger ttl chip or a signal i/o  smoothing i know a 12 volt 2 amp with a buck converter help as well set between 4.6 volt to 5.0 volts out cable is 1 metre short atm

[ibjeepin]

just get a decent switching power supply with at least 4 amps of 5v per display. Meanwell or a decent power brick from delta or something a little more reputable than ebay china stuff. Clean power supplies make all the difference as well but having a 12v supply then chinese dc/dc converters is asking for trouble. 

For all my serious stuff like cnc machine building where noise is a big issue I buy surplus astec supplies, same a the big guys like cisco xerox etc use

 

http://www.ebay.com/itm/ASTEC-MVP-Series-Power-Supply-MP4-1E-1I-1N-1N-1T-00-73-540-0307-/172686366160?hash=item2834e8d5d0:g:3dsAAOSwkShZAH91

 

You would not beleive how much these power supplies are new! More than you can imagine. Used in industrial and have been making quality power supplies since the dawn of electronics

[psmmacker]

1 hour ago, ibjeepin said:

just get a decent switching power supply with at least 4 amps of 5v per display. Meanwell or a decent power brick from delta or something a little more reputable than ebay china stuff. Clean power supplies make all the difference as well but having a 12v supply then chinese dc/dc converters is asking for trouble. 

For all my serious stuff like cnc machine building where noise is a big issue I buy surplus astec supplies, same a the big guys like cisco xerox etc use

 

http://www.ebay.com/itm/ASTEC-MVP-Series-Power-Supply-MP4-1E-1I-1N-1N-1T-00-73-540-0307-/172686366160?hash=item2834e8d5d0:g:3dsAAOSwkShZAH91

 

You would not beleive how much these power supplies are new! More than you can imagine. Used in industrial and have been making quality power supplies since the dawn of electronics

i used a old atx power power on the buck converter but i found something today a brithtish telecom routor power pack

and its 12v 2amps switching and a buck convert again check videos 

 

 

[psmmacker]

6 hours ago, ibjeepin said:

  Rewire hub 75 3 way cable for duel display and reuse and a new duel addon to shield pcb design by cable idea and uncle sash

By psmmacker in Pin2DMD, September 22, 2016

New to order from uncle sash a new duel display addon based on my iec wire idea  Should help with no bleeding and will be added to he curent shield with one hub75  femail input to 3 hub 75 output    A new modification  of sasha old shield with out a 2 way cable and a easier method  below hopfully. Sash could design a.3.way iec male board  to support...

•  8 replies

There is another issue how long is your cable, without buffering at both ends this would be an issue just like USB, ethernet etc has distance limitations. you are feeding to multiple devices at once? There are more variable here. 

cable seem to be ok a 1 metre add a earth in between stm and panels with longer cable

could cure flicking at longer distance

[ibjeepin]

why do you need 12v the system runs on 5V, 

 

http://www.ebay.co.uk/itm/Din-Rail-power-supply-15W-5V-3A-MeanWell-MDR-20-5-/231266780814?hash=item35d893068e:g:Mr8AAOSwy5ZXCUOR

http://www.ebay.co.uk/itm/Din-Rail-power-supply-50W-5V-10A-MeanWell-MDR-60-5-/310994168692?hash=item4868b26b74:g:s30AAOSwgApXCUTe

 

 

 

[psmmacker]

was tying differnt power methods see the power pack needs to be away 

from the stm32 and works better if the transformer in on the socket from the wall

 

[psmmacker]

On 2017-6-7 at 8:48 AM, ibjeepin said:

Because pwm and digital runs at frequencies and those frequencies produce electromagnetic waves, digital is worse than analogue. This interferance can induce logic to trigger at an incorrect time possibly slightly ahead or behind a rising or falling signal. If it timing critical as in serial digital data which this is , you may see some crap.  A properly setup logic analyzer might help or in this case one that can look at serial data as well.  I have many analyzers and scopes 3 expensive HP logic analyzers and one with a 2gs scope module and and a cheap PC based one. I also have several Tektronix oscilliscopes, Including an awesome digital one: Rigol DS1054Z  which I would say the best money spent and I almost use this one all the time now ! Remember data is put on a bus and then another line is used to enable that digital data to be read or moved or sent or whatever, then on to the next, so clock timing is critical as well in all types of transfers of digital data. I could go on and on, then there is buffering ; In the case of the panels they expect this serial data with specific timing, levels and voltage (sadly youll never get the specs on this from the chinese unlike real product manufactures of chips etc who give you the logic data) 

 

Here is the main led driver chip on the hub75 Sadly I can only find the chinese but look at page 9 for the timing 

http://www.depuw.com/Public//images/pdf/depuw/DP5020B_REV1.0.pdf

Her is another potential issue when signals are not good enough , one seen lots of this. 

https://www.allaboutcircuits.com/textbook/digital/chpt-3/buffer-gate/

it goes on and on.....  remember its all about timing;  

Here is another problem with digital

http://www.ece.ucsb.edu/Faculty/Johnson/ECE152A/L4 - Propagation Delay, Circuit Timing & Adder Design.pdf

Lastly though based on what I have seen this can also be code related and its timing, But I dont know the code nor have I looked at it but I have seen some funny unexplainable stuff in my real pinball and this setup but I know its input related timing. I am doing this as a hobby therefore not looking to analyze this as its good enough for me to play pinball. I barely have enought time to play around with my machines. I wish I could see a complete high res video of the issue you are having from start to finish. 

DP5020B

DP5020B
Overview

Package information

DP5020B is designed specifically for LED display driver chip
Set the CMOS shift register with the latch function that can be serial input
Data is converted to parallel output data format.
DP5020B operating voltage of 3.3V-5.0V, providing 16 power

product name

Package form

Plastic body size
(Mm)

Foot pitch
(Mm)

DP5020B

SSOP24

13.0 * 6.0 * 1.8

1.0

DP5020B

QSOP24

8.65 * 3.9 * 1.4

0.635

DP5020B

QFN24 (4 * 4)

4 * 4 * 0.85

0.5

The flow source can provide a constant power of 1mA to 32mA at each output port
Flow; and a single IC chip output current difference is less than ± 2.5%; multiple IC
Between the output current difference is less than ± 3.5%; channel output current does not follow the input
The output voltage (VDS) changes; and the current by the voltage and the environment

Pin definition

The temperature change is less than 1%; the output current of each channel is of the size
External resistor to adjust.
DP5020B output port voltage up to 17V, so you can in every
Output terminals in series with multiple LED lights; In addition, DP5020B up to
25MHz clock frequency can meet the system for a large number of data transmission needs
begging.

Features


16-channel constant current source output



Constant current:
1-32mA@VDD=5.0V
@ Chip error <± 2.5%, inter-chip error <± 3.5%
1-22mA@VDD=3.3V
@ Chip error <± 2.5%, inter-chip error <± 3.5%



The output current supports external Rext resistance adjustable



Fast output current response, OE (minimum): 35ns



Up to 25MHz clock frequency



Working voltage: 3.3V ~ 5.0V



Package form: SSOP24, QSOP24, QFN24 (4 * 4)

Www.depuw.com

V1.1

-1-

Aug 2016

DP5020B
Application areas


Advertising screen



LED lighting

A simple block diagram of internal functions

Pin description
Function Description

name
GND

Chip ground

SDI

Serial data input port

CLK

Clock signal input port; clock rising edge when the data is shifted
Data latch control port. When LE is high, the serial data will be passed to the output latch; when LE is low,

LE
Material will be latched
OUT0 ~ OUT15

Constant current source output port
Output enable control port. When the OE is low, it will start OUT0 ~ OUT15 output; when OE is high,

OE
SDO
R-EXT
VDD

OUT0 ~ OUT15 output will be turned off
Serial data output port; can be connected to the next chip SDI port
Connect an external resistor to the input port; this external resistor can set the output current of all output channels
Chip power supply

Www.depuw.com

V1.1

-2-

Aug 2016

DP5020B
Output and input equivalent circuit


OE input



CLK, SDI input



OUT0 ~ OUT15 output

LE input

SDO output

Www.depuw.com

V1.1

3-

Aug 2016

DP5020B
Timing diagram

Truth table

Maximum limit parameter
characteristic

On behalf of the symbol

Maximum range

unit

voltage

VDD

0 ~ 7.0

V

Input voltage

VSDA, VCLK, VLE, VOE

-0.4 ~ VDD + 0.4V

V

Current output current

IOUT

+45

The output voltage is applied

VDS

-0.5 ~ + 17.0

Clock frequency

FCLK

30

IC operating ambient temperature

Topr

-40 ~ + 85

℃

IC storage ambient temperature

Tstg

-55 ~ + 150

℃

HBM body discharge mode

VESD

> 4

KV

MA
V
MHz

Note: The maximum peak temperature of the surface mount product can not exceed 260 ℃, the temperature curve according to J-STD-020 standard, refer to the actual factory and solder paste recommended by the factory to set their own.

Www.depuw.com

V1.1

4-

Aug 2016

DP5020B
DC characteristics
(VDD = 5.0 V, Ta = 27 ° C)
characteristic

On behalf of the symbol

Measurement conditions

Minimum value

Typical value

The maximum value

unit

Quiescent Current

IDD

VDD = 5.0V, R-EXT is floating and IOUT is off

-

0.9

-

MA

OUT port withstand voltage

VDS (MAX)

OUT0 ~ OUT15

-

-

17

V

OUT port output current

IOUT

VDD = 5.0V

1

-

32

MA

-

-twenty two

-

MA

IOL

-

twenty two

-

MA

VIH

0.7 * VDD

-

VDD

V

VIL

GND

-

0.3 * VDD

V

IOH
SDO drive current

VDD = 5.0V

Input port rollover level
OUT output current leakage current
SDO output voltage
OUT port output current 1

Output current error

OUT port output current 2

Output current error

IOH

VDS = 17V

-

-

0.5

UA

VOL

IOL = + 1mA

-

-

0.4

V

VOH

IOH = -1mA

4.6

-

-

V
MA

IOUT1

DIOUT

IOUT2

DIOUT

VDS = 1.0V

Rext = 1800Ω

-

8.9

-

IOUT = 8.9mA

On-chip

-

-

± 2.5%

Rext = 1800Ω

Between pieces

-

-

± 3.5%

VDS = 1.0V

Rext = 920Ω

-

17.5

IOUT = 17.5mA

On-chip

-

-

± 2.5%

Between pieces

-

-

± 3.5%

VDS = 1.0V

-

MA

VDS = 1.0V
Rext = 920Ω

Output current error / VDS change

% / ΔVDS

VDS = 1.0V to 3.0V

-

± 0.5%

-

% / V

Output current error / VDD change

% / ΔVDD

VDD = 4.5V to 5.5V

-

± 0.5%

-

% / V

Pull-up resistance

R OE (up)

OE

-

200

-

KΩ

Pull-down resistance

RLE (down)

LE

-

200

-

KΩ

IDD (off) 1

R-EXT is floating, OUT0 ~ OUT15 = OFF

-

0.9

-

IDD (off) 2

Rext = 1800Ω, OUT0 ~ OUT15 = OFF

-

2.1

-

IDD (off) 3

Rext = 920Ω, OUT0 ~ OUT15 = OFF

-

3.2

-

IC quiescent current

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V1.1

-5-

MA

Aug 2016

DP5020B
(VDD = 3.3 V, Ta = 27 ° C)
characteristic

On behalf of the symbol

Measurement conditions

Minimum value

Typical value

The maximum value

unit

Quiescent Current

IDD

VDD = 3.3V, R-EXT is floating and IOUT is off

-

1.2

-

MA

OUT port withstand voltage

VDS (MAX)

OUT0 ~ OUT15

-

-

17

V

OUT port output current

IOUT

VDD = 3.3V

1

-

twenty two

MA

-

-10.5

-

MA

IOL

-

13.3

-

MA

VIH

0.7 * VDD

-

VDD

V

VIL

GND

-

0.3 * VDD

V

IOH
SDO drive current

VDD = 3.3V

Input port rollover level
OUT output current leakage current
SDO output voltage
OUT port output current 1

Output current error

OUT port output current 2

Output current error

IOH

VDS = 17V

-

-

0.5

UA

VOL

IOL = + 1mA

-

-

0.3

V

VOH

IOH = -1mA

3.0

-

-

V
MA

IOUT1

DIOUT

IOUT2

DIOUT

VDS = 1.0V

Rext = 1800Ω

-

8.9

-

IOUT = 8.9mA

On-chip

-

-

± 2.5%

Rext = 1800Ω

Between pieces

-

-

± 3.5%

VDS = 1.0V

Rext = 920Ω

-

17.5

IOUT = 17.5mA

On-chip

-

-

± 2.5%

Between pieces

-

-

± 4.5%

VDS = 1.0V

-

MA

VDS = 1.0V
Rext = 920Ω

Output current error / VDS change

% / ΔVDS

VDS = 1.0V to 3.0V

-

± 0.5%

-

% / V

Output current error / VDD change

% / ΔVDD

VDD = 3.3V ~ 3.8V

-

± 1%

-

% / V

Pull-up resistance

R OE (up)

OE

-

200

-

KΩ

Pull-down resistance

RLE (down)

LE

-

200

-

KΩ

IDD (off) 1

R-EXT is floating, OUT0 ~ OUT15 = OFF

-

0.6

-

IDD (off) 2

Rext = 1800Ω, OUT0 ~ OUT15 = OFF

-

1.8

-

IDD (off) 3

Rext = 920Ω, OUT0 ~ OUT15 = OFF

-

3.0

-

IC quiescent current

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V1.1

6-

MA

Aug 2016

DP5020B
DC characteristic test circuit

Www.depuw.com

V1.1

-7-

Aug 2016

DP5020B
Dynamic characteristics
(VDD = 5.0V)
characteristic

delay
(Low to high)

delay
(High to low)

Representative

Measurement conditions

Minimum value

General value

The maximum value

unit

CLK - OUT

TpLH1

-

30

-

Ns

LE - OUT

TpLH2

-

26

-

Ns

OE - OUT

TpLH3

-

30

-

Ns

CLK - SDO

TpLH

VIL = GND

-

28

-

Ns

CLK - OUT

TpHL1

Rext = 1800Ω

-

35

-

Ns

LE - OUT

TpHL2

VDD = 5.0V

-

33

-

Ns

OE - OUT

TpHL3

RL = 400Ω

-

35

-

Ns

CLK - SDO

TpHL

CL = 10pF

-

27

-

Ns

VIH = VDD

Current output rising edge time

TOUT-RISE

-

30

-

Ns

Current output falling edge time

TOUT-FALL

-

35

-

Ns

Minimum value

General value

The maximum value

unit

(VDD = 3.3V)
characteristic

delay
(Low to high)

delay
(High to low)

Representative

Measurement conditions

CLK - OUT

TpLH1

-

42

-

Ns

LE - OUT

TpLH2

-

36

-

Ns

OE - OUT

TpLH3

-

45

-

Ns

CLK - SDO

TpLH

VIL = GND

-

30

-

Ns

CLK - OUT

TpHL1

Rext = 1800Ω

-

38

-

Ns

LE-OUT

TpHL2

VDD = 3.3V

-

33

-

Ns

OE - OUT

TpHL3

RL = 200Ω

-

40

-

Ns

CLK - SDO

TpHL

CL = 10pF

-

29

-

Ns

VIH = VDD

Current output rising edge time

TOUT-RISE

-

26

-

Ns

Current output falling edge time

TOUT-FA