INA271 80V, Low-/High-side, High-Speed, Voltage Output Current Sense Amplifier | TI.com

INA271 (ACTIVE)

80V, Low-/High-side, High-Speed, Voltage Output Current Sense Amplifier

 

Recommended alternative parts

  • INA282  -  The INA282 is a higher-precision device.

Other gain values available

INA270: 14V/V | INA271: 20V/V |

Automotive versions available

INA270A-Q1: 14V/V | INA271A-Q1: 20V/V |

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.

Features

  • 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

All trademarks are the property of their respective owners.

View more

Parametrics Compare all products in Current sense amplifiers analog output

 
Common mode voltage (Max) (V)
Common mode voltage (Min) (V)
Input offset (+/-) (Max) (uV)
Input offset drift (+/-) (Typ) (uV/C)
Gain (V/V)
Gain error (%)
Gain error drift (+/-) (Max) (ppm/°C)
CMRR (Min) (dB)
Bandwidth (kHz)
Supply Voltage (Max) (V)
Supply Voltage (Min) (V)
Iq (Max) (mA)
Number of channels (#)
Features
Rating
Operating temperature range (C)
Package Group
Package size: mm2:W x L (PKG)
INA270
80    
-16    
2500    
2.5    
14
20    
2    
50    
100    
130    
18    
2.7    
0.95    
1    
Low-side Capable    
Catalog    
-40 to 125    
SOIC | 8    
8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)    

Design tool

INA271 Error Analysis

0.001m ≤ 
 mOhm ≤ 100m
0.0001 ≤ 
A
A ≤ 100 
2.7 ≤ 
V ≤ 36
0 ≤ 
V ≤ 36
-40 ≤ 
C ≤ 125