INA821 datasheet(5/47 Pages) TI

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7.5 Electrical Characteristics: G = 1/2

at VS = ±2.25 V to ±18 V, TA = 25°C, VCM = VOUT = VS / 2, RL = 10 kΩ connected to ground, and REF pin connected to

ground (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

OFFSET VOLTAGE (RTO)

VOS

Input offset voltage

G = 1/2, RTO, TA = 25°C, VS = ±2.25 V to ±3

VCM = –3V

±14

±200

µV

G = 1/2, RTO, TA = 25°C, VS = ±3 V to ±18

V, VCM = VS / 2

±14

±200

µV

dVOS/dT

Input offset voltage

drift

±0.7

±5.0

µV/°C

PSRR

Power-supply

rejection ratio

VS = ±3 V to ±18 V

±0.5

±5

µV/V

INPUT VOLTAGE

VCM

Common-mode

voltage

VOUT = 0 V

3[(V–)–0.1]

–2VREF

3(V+)–2VREF

CMRR

Common-mode

rejection ratio

RTO, 3 [(V−) – 0.1 V)] ≤

VCM ≤ 3 [(V+) – 3 V]

TA = 25°C

100

TA = –40°C to +125°C

RTO, 3 [(V+) - 1.5 V)] ≤

VCM ≤ 3 [(V+))]

TA = 25°C

100

TA = –40°C to +125°C

INPUT IMPEDANCE

zid

Differential

VO = 0 V

kΩ

zic

Common-mode

kΩ

GAIN

Initial

1/2

V/V

Gain error

VOUT = –10 V to +10 V, VS = ±15 V

±0.01

±0.03

Gain error drift(1)

±0.2

±0.5

ppm/°C

Gain nonlinearity

VOUT = –10 V to +10 V, VS = ±15 V

ppm

OUTPUT

Output voltage

swing

Positive rail

170

220

Negative rail

190

220

ISC

Short-circuit

current

±65

NOISE

Output voltage

noise

f = 0.1 Hz to 10 Hz, RTO

μVpp

Output voltage

noise density

f = 1 kHz, RTO

nV/√Hz

FREQUENCY RESPONSE

GBW

Small signal

bandwidth

Amplitude = –3 dB

2.0

MHz

Slew rate

V/µs

Settling time

To 0.1%

VOUT = 10-V step

µs

To 0.01%

VOUT = 10-V step

1.3

µs

THD+N

Total harmonic

distortion + noise

f = 1 kHz, VOUT = 2.8 VRMS

0.00038

Noise floor, RTO

80-kHz bandwidth, VOUT = 3.5 VRMS

–116

tDR

Overload recovery

time

200

www.ti.com

INA597

SBOS385B – AUGUST 2019 – REVISED APRIL 2021

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