INA170 60V, High-Side, Bi-Directional, High-Speed, Current Output Current Sense Amplifier | TI.com

INA170 (ACTIVE) 60V, High-Side, Bi-Directional, High-Speed, Current Output Current Sense Amplifier

60V, High-Side, Bi-Directional, High-Speed, Current Output Current Sense Amplifier - INA170
Datasheet
 

Description

The INA170 is a high-side, bidirectional current shunt monitor featuring a wide input common-mode voltage range, low quiescent current, and a tiny MSOP-8 package.

Bidirectional current measurement is accomplished by output offsetting. The offset voltage level is set with an external resistor and voltage reference. This permits measurement of a bidirectional shunt current while using a single supply for the INA170.

Input common-mode and power-supply voltages are independent. Input voltage can range from +2.7V to +60V on any supply voltage from +2.7V to +40V. Low 10µA input bias current adds minimal error to the shunt current.

The INA170 converts a differential input voltage to a current output. This current develops a voltage across an external load resistor, setting any gain from 1 to over 100.

The INA170 is available in an MSOP-8 package, and is specified over the extended industrial temperature range, –40°C to +85°C with operation from –55°C to +125°C.

Features

  • COMPLETE BIDIRECTIONAL CURRENT MEASUREMENT CIRCUIT
  • WIDE SUPPLY RANGE: 2.7V to 40V
  • SUPPLY-INDEPENDENT COMMON-MODE VOLTAGE: 2.7V TO 60V
  • RESISTOR PROGRAMMABLE GAIN SET
  • LOW QUIESCENT CURRENT: 75µA (typ)
  • MSOP-8 PACKAGE
  • APPLICATIONS
    • CURRENT SHUNT MEASUREMENT:
        Automotive, Telephone, Computers, Power Systems, Test, General Instrumentation
    • PORTABLE AND BATTERY-BACKUP SYSTEMS
    • BATTERY CHARGERS
    • POWER MANAGEMENT
    • CELL PHONES

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INA170 Error Analysis

0.001m ≤ 
 mOhm ≤ 100m
0.0001 ≤ 
A
A ≤ 100 
2.7 ≤ 
V ≤ 60
2.7 ≤ 
V ≤ 60
-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)
INA170 Order now 60     2.7     1000     1     Adjustable     2     100     100     4000     60     2.7     0.125     1     0     Bi-directional
Current Output    
Catalog     -40 to 85     VSSOP | 8     8VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 8)    
INA138 Order now 36     2.7     1000     1     Adjustable     2     100     100     800     36     2.7     0.06     1     0     Current Output     Catalog     -40 to 125     SOT-23 | 5     5SOT-23: 5 mm2: 1.6 x 2.9 (SOT-23 | 5)    
INA139 Order now 36     2.7     1000     1     Adjustable     2     100     100     4400     40     2.7     0.125     1     0     Current Output     Catalog     -40 to 125     SOT-23 | 5     5SOT-23: 5 mm2: 1.6 x 2.9 (SOT-23 | 5)    
INA168 Order now 60     2.7     1000     1     Adjustable     2     100     100