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.