7.4.2 Data Acquisition

Often data acquisition systems require stable voltage references to maintain necessary accuracy. The REF30

family features stability and a wide range of voltages designed for most microcontrollers and data converters.

Figure 7-4 and Figure 7-5 show two basic data acquisition systems.

5 Ω

ADS7822

V

CC

CS

D

OUT

DCLOCK

V

REF

+In

–In

GND

+

+

1 F to 10 F

μ

μ

1 F to

μ

10 F

μ

3.3 V

0.1 F

μ

V

IN

V+

V

S

Microcontroller

REF3033

GND

Copyright © 2016, Texas Instruments Incorporated

Figure 7-4. Basic Data Acquisition System 1

ADS8324

V

CC

CS

D

OUT

DCLOCK

V

REF

+In

–In

GND

+

+

5 Ω

1 F to 10 F

μ

μ

1 F to 10 F

μ

μ

0.1 F

μ

0 V to 1.25 V

Microcontroller

2.5-V Supply

REF3012

GND

V

IN

V

OUT

2.5 V

1.25 V

V

S

Copyright © 2016, Texas Instruments Incorporated

Figure 7-5. Basic Data Acquisition System 2

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REF30, REF30E

SBVS032J – MARCH 2002 – REVISED JULY 2025

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