1

5

2

3

4

VREF

VIN

REF4132-Q1

C

OUT

EN

GND

N/C

C

IN

17

REF4132-Q1

www.ti.com

SNAS795A – FEBRUARY 2020 – REVISED JULY 2020

Product Folder Links: REF4132-Q1

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Copyright © 2020, Texas Instruments Incorporated

11 Power Supply Recommendations

The REF4132-Q1 family of references feature an extremely low-dropout voltage. These references can be

operated with a supply of only 50 mV above the output voltage. TI recommends a supply bypass capacitor

ranging between 0.1 µF to 10 µF.

12 Layout

12.1 Layout Guidelines

Figure 31 illustrates an example of a PCB layout for a data acquisition system using the REF4132-Q1. Some key

considerations are:

•

•

Decouple other active devices in the system per the device specifications.

•

Using a solid ground plane helps distribute heat and reduces electromagnetic interference (EMI) noise pickup.

•

Place the external components as close to the device as possible. This configuration prevents parasitic errors

(such as the Seebeck effect) from occurring.

•

Do not run sensitive analog traces in parallel with digital traces. Avoid crossing digital and analog traces if

possible, and only make perpendicular crossings when absolutely necessary.

12.2 Layout Example

Figure 31. Layout Example