10 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. Customers should validate and test their design

implementation to confirm system functionality.

10.1 Application Information

REF35-Q1 with low current consumption and class leading performance specifcations is suitable reference for

multiple applications. The device can also be used as a precision low noise power supply to sensor or data

converter instead of traditional LDO or DC/DC based power supply. Basic applications includes positive/negative

voltage reference and data acquisition.

10.2 Typical Application: Negative Reference Voltage

For applications requiring a negative and positive reference voltage, the REF35-Q1 and OPA188-Q1 can be

used to provide a dual-supply reference from a 5 V supply. Figure 10-1 shows the REF35250 used to provide

a 2.5 V supply reference voltage. The low drift performance of the REF35250-Q1 complements the low offset

voltage and low-drift of the OPA188-Q1 to provide an accurate solution for split-supply applications. Take care to

match the temperature coefficients of R1 and R2.

REF35250-Q1

R2

10 k

-

+

GND

+5 V

+5 V

+2.5 V

-5 V

-2.5 V

1

2

3

4

6

5

OPA188-Q1

Figure 10-1. REF35-Q1 and OPA188-Q1 Create Positive and Negative Reference Voltages

REF35-Q1

SNAS845 – AUGUST 2023

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Product Folder Links: REF35-Q1