Product details

Common mode voltage (Max) (V) 36 Common mode voltage (Min) (V) 2.7 Input offset (+/-) (Max) (uV) 1000 Input offset drift (+/-) (Typ) (uV/C) 1 Gain (V/V) Adjustable Gain error (%) 2 Gain error drift (+/-) (Max) (ppm/°C) 100 CMRR (Min) (dB) 100 Bandwidth (kHz) 440 Supply voltage (Max) (V) 40 Supply voltage (Min) (V) 2.7 Iq (Max) (mA) 0.125 Number of channels (#) 1 Comparators (#) 0 Features Current Output Rating Catalog Operating temperature range (C) -40 to 125
Common mode voltage (Max) (V) 36 Common mode voltage (Min) (V) 2.7 Input offset (+/-) (Max) (uV) 1000 Input offset drift (+/-) (Typ) (uV/C) 1 Gain (V/V) Adjustable Gain error (%) 2 Gain error drift (+/-) (Max) (ppm/°C) 100 CMRR (Min) (dB) 100 Bandwidth (kHz) 440 Supply voltage (Max) (V) 40 Supply voltage (Min) (V) 2.7 Iq (Max) (mA) 0.125 Number of channels (#) 1 Comparators (#) 0 Features Current Output Rating Catalog Operating temperature range (C) -40 to 125
SOT-23 (DBV) 5 5 mm² 2.9 x 1.6
  • 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
  • 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

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.

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.

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Pin-for-pin with same functionality to the compared device.
INA138 ACTIVE 2.7 to 36V, 800kHz Variable gain current sense amplifier The INA138 is functionally equivalent with lower bandwidth
INA169 ACTIVE 2.7 to 60V, 440kHz Variable gain current sense amplifier The INA169 is functionally equivalent supporting up to 60 V

Technical documentation

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Simulation model

INA139 TINA-TI Reference Design

SBOM946.TSC (79 KB) - TINA-TI Reference Design
Simulation model

INA139 TINA-TI Spice Model

SBOM947.ZIP (8 KB) - TINA-TI Spice Model
Simulation model

INA139 PSpice Model

SBOMBC9.ZIP (19 KB) - PSpice Model
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Simulation tool

TINA-TI — SPICE-based analog simulation program

TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
Reference designs

PMP11228 — 10V-13V Input Constant Output Current Capacitor-Charger Boost Converter (28V@0.13A) Reference Design

This 28V boost converter charges a capacitor "bank" at a constant 0.13A to reduce the power drawn from the 10V - 13V input. Two control loop are implemented; one to regulate output current and a second to regulate output voltage. This design can support high pulse load currents at a repetitive rate (...)
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SOT-23 (DBV) 5 View options

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