INA270 80V, Low-/High-side, High-Speed, Voltage Output Current Sense Amplifier | TI.com

INA270 (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

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INA270 Error Analysis

0.001m ≤ 
 mOhm ≤ 100m
0.0001 ≤ 
A
A ≤ 100 
2.7 ≤ 
V ≤ 18
-16 ≤ 
V ≤ 80
-40 ≤ 
C ≤ 125

Parametrics

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Part number Order 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 (#) Comparators (#) Features Rating Operating temperature range (C) Package Group Package size: mm2:W x L (PKG)
INA270 Order now 80     -16     2500     2.5     14
20    
2     50     100     130     18     2.7     0.95     1     0     Low-side Capable     Catalog     -40 to 125     SOIC | 8     8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)