1 Features

1? Wide Common-Mode Range: –16 V to +80 V

? CMRR: 120 dB

? Accuracy:

±0.5-mV Offset (typ)

±0.2% Gain Error (typ)

2.5 μV/°C Offset Drift (typ)

50 ppm/°C Gain Drift (max)

? Bandwidth: Up to 130 kHz

? Two Gain Options Available:

14 V/V (INA270)

20 V/V (INA271)

? Quiescent Current: 700 μA (typ)

? Power Supply: +2.7 V to +18 V

? Provision for Filtering

2 Applications

? Power Management

? Automotive

? Telecom Equipment

? Notebook Computers

? Battery Chargers

? Cell Phones

? Welding Equipment

3 Description

The INA270 and INA271 family of voltage-output,

current-sense amplifiers can sense drops across

shunt resistors at common-mode voltages from –16 V

to +80 V, independent of the supply voltage. The

INA270 and INA271 pinouts readily enable filtering.

The INA270 and INA271 are available with two gain

options: 14 V/V and 20 V/V. The 130-kHz bandwidth

simplifies use in current-control loops.

The INA270 and INA271 operate from a single +2.7-V

to +18-V supply, drawing 700 μA (typical) of supply

current. The devices are specified over the extended

operating temperature range of –40°C to +125°C and

are offered in an SOIC-8 package.