6.5 Electrical Characteristics (continued)

at TA = 25°C, VS = ±15 V, RL = 10 kΩ, VREF = 0 V, VCM = VS / 2, and G = 1 (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

GAIN

Gain equation

1 + (50 kΩ / RG)

V/V

G

Gain

1

10000

V/V

GE

Gain error

G = 1

INA2128U

±0.01

±0.024

%

INA2128UA

±0.01

±0.1

G = 10

INA2128U

±0.02

±0.4

INA2128UA

±0.02

±0.5

G = 100

INA2128U

±0.05

±0.5

INA2128UA

±0.05

±0.7

G = 1000

INA2128U

±0.5

±1

INA2128UA

±0.5

±2

Gain drift(2)

TA = –40°C to +85°C

±1

±10

ppm/°C

50-kΩ or 49.4-kΩ resistance(3)

±25

±100

Gain nonlinearity

G = 1, VO = ±13.6 V

INA2128U

±0.0001

±0.001

% of FSR

INA2128UA

±0.0001

±0.002

G = 10

INA2128U

±0.0003

±0.002

INA2128UA

±0.0003

±0.004

G = 100

INA2128U

±0.0005

±0.002

INA2128UA

±0.0005

±0.004

G = 1000(4)

±0.001

OUTPUT

Positive output voltage

(V+) – 1.4

V

Negative output voltage

(V–) + 1.4

V

CL

Load capacitance

Stable operation

1000

pF

ISC

Short-circuit current

Continuous to VS / 2

+6/–15

mA

FREQUENCY RESPONSE

BW

Bandwidth, –3 dB

G = 1

1.3

MHz

G = 10

600

kHz

G = 100

200

G = 1000

20

SR

Slew rate

G = 10, VO = ±10 V

1.2

V/µs

tS

Settling time

To 0.01%

G = 1

9

µs

G = 10

9

G = 100

12

G = 1000

80

Overload recovery

50% input overload

4

µs

POWER SUPPLY

IQ

Total quiescent current

VIN = 0 V

±1.4

±1.5

mA

(1)

Input common-mode voltage varies with output voltage; see Typical Characteristics.

(2)

Specified by wafer test.

(3)

Temperature coefficient of the 50-kΩ or 49.4-kΩ term in the gain equation.

(4)

Nonlinearity measurements in G = 1000 are dominated by noise. Typical nonlinearity is ±0.001%.

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INA2128

SBOS035B – DECEMBER 1995 – REVISED MAY 2023

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