INA826 datasheet(6/33 Pages) TI

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7.5 Electrical Characteristics (continued)

at TA = 25°C, VS = ±15 V, RL = 10 kΩ, VREF = 0 V, and G = 1 (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

GAIN

Gain equation

1 + (100 kΩ / RG)

V/V

Range of gain

1000

V/V

Gain error

G = 1, VO = ±10 V

±0.01

±0.05

G = 10, VO = ±10 V

±0.025

±0.15

G = 100, VO = ±10 V

±0.025

±0.15

G = 1000, VO = ±10 V

±0.05

±0.15

Gain drift(5)

G = 1, TA = –40°C to +125°C

±5

ppm/°C

G > 1, TA = –40°C to +125°C

±35

Gain nonlinearity

G = 1 to 10

ppm

G = 100

G = 1000

G = 1 to 100, RL = 2 kΩ

OUTPUT

Output voltage swing

(–VS) + 0.15

(+VS) – 0.15

Load capacitance

Stable operation

1000

Open-loop output impedance f = 1 MHz

See Open-Loop Output Impedance vs

Frequency

Ω

ISC

Short-circuit current

Continuous to VS / 2

±16

FREQUENCY RESPONSE

Bandwidth, –3 dB

G = 1

1.9

MHz

G = 10

0.35

MHz

G = 100

0.06

G = 1000

0.006

Slew rate

G = 1, VO = ±10 V

V/µs

Settling time

To 0.01%

G = 1 to 10, VSTEP = 10 V

µs

G = 100, VSTEP = 10 V

G = 1000, VSTEP = 10 V

260

To 0.001%

G = 1 to 10, VSTEP = 10 V

G = 100, VSTEP = 10 V

G = 1000, VSTEP = 10 V

290

REFERENCE INPUT

RIN

Input impedance

100

kΩ

Reference input voltage

(–VS)

(+VS)

Gain to output

V/V

Reference gain error

inside the output voltage swing

0.01

0.05

POWER SUPPLY

Quiescent current

VIN = 0 V

180

250

µA

TA = –40°C to +125°C

300

(1)

Total offset, referred-to-input (RTI): VOS = (VOSI) + (VOSO / G).

(2)

Specified by characterization.

(3)

Offset drifts are uncorrelated. Input-referred offset drift is calculated using: ΔVOS(RTI) = √[ΔVOSI 2 + (ΔVOSO / G)2].

(4)

Input voltage range of the instrumentation amplifier input stage. The input range depends on the common-mode voltage, differential

voltage, gain, and reference voltage. See Typical Characteristic curves for more information.

(5)

The values specified for G > 1 do not include the effects of the external gain-setting resistor, RG.

(6)

Total RTI voltage noise is equal to: eN(RTI) = √[eNI 2 + (eNO / G)2].

(7)

One input grounded, G = 1.

INA823

SBOSA75A – JULY 2021 – REVISED JULY 2021

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