INA821 datasheet(3/45 Pages) TI

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Device Comparison Table

DEVICE

DESCRIPTION

GAIN EQUATION

INA592

High-precision, wide-bandwidth e-trim™ difference amplifier

G = 0.5 V/V or 2 V/V

INA159

G = 0.2 V differential amplifier for ±10-V to 3-V and 5-V conversion

G = 0.2 V/V

INA137

Audio differential line receiver ±6 dB (G = 1/2 or 2)

G = 0.5 V/V or 2 V/V

INA132

Low power, single-supply difference amplifier

G = 1 V/V

INA819

35-µV offset, 0.4 µV/°C VOS drift, 8-nV/√ Hz noise, low-power, precision instrumentation amplifier

G = 1 + 50 kΩ / RG

INA821

35-µV offset, 0.4 µV/°C VOS drift, 7-nV/√ Hz noise, high-bandwidth, precision instrumentation amplifier G = 1 + 49.4 kΩ / RG

INA333

25-µV VOS, 0.1 µV/°C VOS drift, 1.8-V to 5-V, RRO, 50-µA IQ, chopper-stabilized INA

G = 1 + 100 kΩ / RG

PGA280

20-mV to ±10-V programmable gain IA with 3-V or 5-V differential output; analog supply up to ±18 V

Digital programmable

PGA112

Precision programmable gain op amp with SPI

Digital programmable

5 Pin Configuration and Functions

REF

±IN

V+

+IN

OUT

V±

SENSE

NC = No Connection

Figure 5-1. D (SOIC-8) and DGK (VSSOP-8)

Packages, Top View

–INOP

REF

–IN

+IN

V–

SENSE

OUT

V+

+INOP

Thermal

Pad

Not to scale

Figure 5-2. DRC (10-Pin VSON With Thermal Pad,

Preview) Package, Top View

Table 5-1. Pin Functions

I/O

DESCRIPTION

NAME

NO.

D (SOIC),

DGK (VSSOP)

DRC (VSON)

+IN

12-kΩ resistor to non-inverting terminal of op amp. Used as positive input in G =

½ configuration. Used as reference pin in G = 2 configuration.

–IN

12-kΩ resistor to inverting terminal of op amp. Used as negative input in G = ½

configuration. Connect to output in G = 2 configuration.

+INOP

—

Direct connection to non-inverting terminal of op amp

–INOP

—

Direct connection to inverting terminal of op amp

OUT

Output

REF

6-kΩ resistor to non-inverting terminal of op amp. Used as reference pin in G =

½ configuration. Used as positive input in G = 2 configuration.

SENSE

6-kΩ resistor to inverting terminal of op amp. Connect to output in G = ½

configuration. Used as negative input in G = 2 configuration.

V+

—

Positive (highest) power supply

V–

—

Negative (lowest) power supply

—

No internal connection (can be left floating)

www.ti.com

INA592

SBOS914E – OCTOBER 2018 – REVISED FEBRUARY 2021

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