36-V, High-Side, High-Speed, Current Output Current Shunt Monitor - INA139

INA139 (ACTIVE)

36-V, High-Side, High-Speed, Current Output Current Shunt Monitor

 

Recommended alternative parts

  • INA225  -  Improved accuracy with voltage output

Description

The INA139 and INA169 are high-side, unipolar, current shunt monitors. Wide input common-mode voltage range, high-speed, 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 40 V for the INA139 and 2.7 V to 60 V for the INA169. Quiescent current is only 60 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 INA139 and INA169 are available in 5-pin SOT-23 packages. The INA139 device is specified for the –40°C to +125°C temperature range, and the INA169 is specified from –40°C to +85°C.

Features

  • Complete Unipolar High-Side Current Measurement Circuit
  • Wide Supply and Common-Mode Range
  • INA139: 2.7 V to 40 V
  • INA169: 2.7 V to 60 V
  • Independent Supply and Input Common-Mode Voltages
  • Single Resistor Gain Set
  • Low Quiescent Current: 60 µA (Typical)
  • 5-Pin, SOT-23 Packages

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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)
INA139 INA138 INA168 INA169 INA170
36    36    60    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   
4400    800    800    4400    4000   
40    36    60    60    60   
2.7    2.7    2.7    2.7    2.7   
0.125    0.06    0.06    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 INA139

Version Part Number Definition
Automotive INA139-Q1 Q100 devices qualified for high-reliability automotive applications targeting zero defects

INA139 Error Analysis

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