60-V, High-Side, Current Output Current Shunt Monitor - INA168

INA168 (ACTIVE)

60-V, High-Side, Current Output Current Shunt Monitor

 

Recommended alternative parts

  • INA282  -  Improved accuracy with voltage output

Description

The INA138 and INA168 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.

For all available packages, see the orderable addendum at the end of the datasheet.

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 (%)
CMRR (Min) (dB)
Bandwidth (kHz)
Supply Voltage (Max) (V)
Supply Voltage (Min) (V)
Iq (Max) (mA)
Special Features
Rating
Operating Temperature Range (C)
Package Group
Package Size: mm2:W x L (PKG)
Gain Error Drift (Max) (ppm/°C)
PSRR (Typ) (uV/V)
Specified Common Mode Voltage (V)
Specified Power Supply Voltage (V)
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   
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   
Current Output    Current Output    Current Output    Current Output    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)   
100    100    100    100    100   
0.1    0.1    0.1    0.1    0.1   
12    12    12    12    12   
5    5    5    5    5   

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