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Q&A Using TLV75533PDBVR for powering ADC

I will be using this ADC in my design. It has two power rails AVDD and DVDD. I am planning to use Two TLV75533PDBVR will be used one for AVDD and other for DVDD. May I know this LDO is good choic...

1 answer  ·  posted 1y ago by newbie‭  ·  last activity 1y ago by Olin Lathrop‭

Question Analog noise ADC LDO-regulator
#1: Initial revision by user avatar newbie‭ · 2025-07-17T18:52:22Z (about 1 year ago)
Using TLV75533PDBVR for powering ADC
I will be using this[ ADC ](https://www.analog.com/media/en/technical-documentation/data-sheets/ad5940-5941.pdf)in my design. It has two power rails AVDD and DVDD.

I am planning to use Two [TLV75533PDBVR](https://www.ti.com/lit/ds/symlink/tlv755p.pdf?ts=1752768625770) will be used one for AVDD and other for DVDD.

**May I know this LDO is good choice for this ADC ?**

In the [reference design](https://wiki.analog.com/_media/resources/eval/user-guides/eval-ad5940/hardware/02-057011-01-a-1.pdf) they used ADM7155 which is very costly.So decided to use other one.

The reference design schematic is given below.

![Image_alt_text](https://electrical.codidact.com/uploads/964c3clecjqajmysqx6goe4kgxsc)

Below is my circuit with TLV75533PDBVR:

![Image_alt_text](https://electrical.codidact.com/uploads/lpwzxz95gb3tmgvb2lo4v45pwjzj)

![Image_alt_text](https://electrical.codidact.com/uploads/gd5y7pm8a6h4ntsct65504dad6yt)