INA168 60V, High-Side, Current Output Current Sense Amplifier | TI.com

INA168 (ACTIVE)

60V, High-Side, Current Output Current Sense Amplifier

60V, High-Side, Current Output Current Sense Amplifier - INA168
 

Recommended alternative parts

  • INA282  -  Improved accuracy with voltage output

Description

The INA138 and INA168 (INA1x8) are high-side, unipolar, current shunt monitors. Wide input common-mode voltage range, low quiescent current, and tiny SOT-23 packaging enable use in a variety of applications.

Input common-mode and power-supply voltages are independent and can range from 2.7 V to 36 V for the INA138 and 2.7 V to 60 V for the INA168. Quiescent current is only 25 µA, which permits connecting the power supply to either side of the current measurement shunt with minimal error.

The device converts a differential input voltage to a current output. This current is converted back to a voltage with an external load resistor that sets any gain from 1 to over 100. Although designed for current shunt measurement, the circuit invites creative applications in measurement and level shifting.

Both the INA138 and INA168 are available in SOT23-5 and are specified for the –40°C to 125°C temperature range.

 

Features

  • Complete Unipolar High-Side Current Measurement Circuit
  • Wide Supply and Common-Mode Range
  • INA138: 2.7 V to 36 V
  • INA168: 2.7 V to 60 V
  • Independent Supply and Input Common-Mode Voltages
  • Single Resistor Gain Set
  • Low Quiescent Current (25 µA Typical)
  • Wide Temperature Range: –40°C to +125°C
  • 5-Pin SOT-23 Package

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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)
INA168 INA138 INA139 INA169 INA170
60     36     36     60     60    
2.7     2.7     2.7     2.7     2.7    
1000     1000     1000     1000     1000    
1     1     1     1     1    
Adjustable     Adjustable     Adjustable     Adjustable     Adjustable    
2     2     2     2     2    
100     100     100     100     100    
100     100     100     100     100    
800     800     4400     4400     4000    
60     36     40     60     60    
2.7     2.7     2.7     2.7     2.7    
0.06     0.06     0.125     0.125     0.125    
1     1     1     1     1    
Current Output     Current Output     Current Output     Current Output     Bi-directional
Current Output    
Catalog     Catalog     Catalog     Catalog     Catalog    
-40 to 125     -40 to 125     -40 to 125     -40 to 125     -40 to 85    
SOT-23     SOT-23     SOT-23     SOT-23     VSSOP    
5SOT-23: 8 mm2: 2.8 x 2.9(SOT-23)     5SOT-23: 8 mm2: 2.8 x 2.9(SOT-23)     5SOT-23: 8 mm2: 2.8 x 2.9(SOT-23)     5SOT-23: 8 mm2: 2.8 x 2.9(SOT-23)     8VSSOP: 15 mm2: 4.9 x 3(VSSOP)    

Other qualified versions of INA168

Version Part Number Definition
Automotive INA168-Q1 Q100 devices qualified for high-reliability automotive applications targeting zero defects

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INA168 Error Analysis

0.001m ≤ 
 mOhm ≤ 100m
0.0001 ≤ 
A
A ≤ 100 
2.7 ≤ 
V ≤ 60
2.7 ≤ 
V ≤ 60
-40 ≤ 
C ≤ 125