Questions tagged [digital-isolator]

The tag has no usage guidance.

11 questions with no upvoted or accepted answers
Filter by
Sorted by
Tagged with
0
votes
1answer
25 views

Digital isolator OOK and edge-based encoding supply current consumption

I am reading this article the use of robust digital isolators in the harsh environments of electric motor drives and it says pulse encoding uses more supply current at higher data rates than 10 Mbps ...
0
votes
1answer
53 views

Digital inputs for analog switches (analog or digital ground?)

I'm using an analog switch, ADG1434 to switch some filter components in a circuit. My question is about general best practice for the digital signals going to analog switches. The switch is dual ...
0
votes
0answers
91 views

How to isolate both Vcc and gnd?

There are three designs of complementary switches, which means that when the button is closed only one of configurations conducts the current and activates the circuit and the other circuit will ...
0
votes
0answers
66 views

DC>DC Isolated Converter (ADuM5401)

I'm in a bit of a quandary as to if I've approached something the right way or if there's an obvious solution I'm missing. (Sorry for lack of schematic, still WIP). Goal: Self-powered isolated USB >...
0
votes
0answers
135 views

Replacing optocoupler with a more reliable and durable device

I am working on a project where I need to have some sort isolation from a machine sending out highs and lows in terms of 24vdc to 0vdc respectively. And I'm using a microcontroller like ESP32 that ...
0
votes
0answers
105 views

Should I remove the solder mask from an isolation-barrier?

To be able to fully utilize the isolation properties of digital isolator ICs such as the ISO7731, the PCB must have an isolation barrier that is accoding to datasheets Free from planes, traces, pads, ...
0
votes
1answer
44 views

Reading isolated multichannel input with voltage drop on all channels

I am building a circuit to read atleast 22 input channels (24 vdc) using an Arduino board which essentially works on 3.3 vdc or 5 vdc. My current setup makes use of 22 PC817 optocoupler. I am sharing ...
0
votes
0answers
32 views

Is it necessary to remove ground on all layers when using isolated DIO

So, I am using uptocouplers and digital isolators for a project connected to a microcontroller GPIO. I removed the ground (ground plane cutouts) under the load side of the components, is it necessary ...
0
votes
1answer
66 views

Data Path Routing or Switching for AFE circuit

Currently i am making the PCB (for analog front end) for the digitization of some sensors(electro-chemical and photo-ionizations). To simply the things this sensors are giving output in Milli volt(...
0
votes
1answer
215 views

SI8751 isolated mosfet driver and msofet NVD5C668NL

I need help for my very first application with power mosfet The goal is "simple..": create a SSR for switching a generic DC load with variable power supply from 5V to 48V and max 25A. Isolation isn't ...
0
votes
0answers
176 views

Transformer based digital isolator vs Capacitor based digital isolator

Nowadays, digital isolator vendors all argue digital isolators are more superior to optocouplers. And they also argue their product is more superior to others in some aspect. Like TI (produce ...