9 Application and Implementation

Note

Information in the following applications sections is not part of the TI component specification,

and TI does not warrant its accuracy or completeness. TI’s customers are responsible for

determining suitability of components for their purposes, as well as validating and testing their design

implementation to confirm system functionality.

9.1 Application Information

The REF53-Q1 is designed for the applications where high precision is required at lower power. Low

temperature drift and noise makes the REF53-Q1 excellent attach for high precision data converters to achieve

best gain drift and resolution.

9.2 Typical Applications

9.2.1 Basic Voltage Reference Connection

Figure 9-1 shows the basic configuration for the REF53-Q1 references. Connect bypass capacitor CIN and

output capacitor CREF as per the guidelines in Section 9.2.1.2.

REF53

GND

REF_S

IN

EN

CREF

VIN

VEN

VREF

CIN

REF_F

GND

GND

Figure 9-1. Basic Reference Connection

9.2.1.1 Design Requirements

A detailed design procedure is based on a design example. For this design example, use the parameters listed

in Table 9-1 as the input parameters.

Table 9-1. Design Example Parameters

DESIGN PARAMETER

VALUE

Input voltage, VIN

3V

Input capacitor

0.1µF

Output capacitor

10µF

9.2.1.2 Detailed Design Procedure

A bulk capacitor (from 0.1μF to 10μF) must connect to the supply to improve transient response in the

applications where the supply voltage can fluctuate. Connect an additional 0.1μF capacitor at VIN pin closer

to the device to bypass high-frequency supply noise.

A low ESR (maximum 1Ω) capacitor from 1μF to 50μF must be connected to the output to provide stable

output. For very-low-noise applications, take special care with X7R and other MLCC capacitors due to the

piezoelectric effect. Piezoelectric property of multilayer ceramic capacitors (MLCC) can introduce a μV range

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REF53-Q1

SNVSCU8 – AUGUST 2026

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Product Folder Links: REF53-Q1