INA270

INA271

SBOS381 − FEBRUARY 2007

www.ti.com

3

ELECTRICAL CHARACTERISTICS

INA270, INA271

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

INPUT

Full-Scale Input Voltage

0.15

V

Common-Mode Input Range

−16

+80

V

Common-Mode Rejection

CMRR

80

120

dB

Over Temperature

100

120

dB

Offset Voltage, RTI(1)

±0.5

2.5

mV

Over Temperature

±3

mV

vs Temperature

2.5

20

µV/°C

vs Power-Supply

PSR

5

100

µV/V

±8

±16

µA

96

k

Ω

Buffer Input Bias Current

−50

nA

Buffer Input Bias Current Temperature Coefficient

±0.03

nA/

°C

OUTPUT (VSENSE . 20mV)(2)

Gain:

INA270 Total Gain

G

14

V/V

INA271 Total Gain

G

20

V/V

Output Buffer Gain

2

V/V

Total Gain Error

±0.2

±1

%

Over Temperature

±2

%

vs Temperature

50

ppm/

°C

±0.75

±2.2

%

Total Output Error

±1.0

±3.0

%

Nonlinearity Error

±0.002

%

Output Impedance, Pin 5

1.5

Ω

Maximum Capacitive Load

No Sustained Oscillation

10

nF

Swing to V+ Power-Supply Rail

(V+) − 0.05

(V+) − 0.2

V

V

FREQUENCY RESPONSE

Bandwidth

BW

130

kHz

Phase Margin

40

degrees

Slew Rate

SR

1

V/

µs

Settling Time (1%)

2

µs

NOISE, RTI(1)

Voltage Noise Density

40

nV/

√Hz

POWER SUPPLY

Operating Range

+2.7

+18

V

Quiescent Current

700

900

µA

Over Temperature

350

950

µA

TEMPERATURE RANGE

Specified Temperature Range

−40

+125

°C

Operating Temperature Range

−55

+150

°C

Thermal Resistance

qJA

SO-8

150

°C/W

(1) RTI means Referred-to-Input.

(2) For output behavior when VSENSE < 20mV, see the section, Accuracy Variations as a Result of VSENSE and Common-Mode Voltage in the Applications

Information.

(3) Initial resistor variation is ±30% with an additional −2200ppm/°C temperature coefficient.

Common-Mode Voltage.

(6) Ensured by design; not production tested.