INA193

ACTIVE

-16 to 80V, 500kHz current sense amplifier

A newer version of this product is available

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Drop-in replacement with upgraded functionality to the compared device
INA281 ACTIVE -4-V to 110-V, 1.3-MHz, high-precision current sense amplifier This product offers improved accuracy, higher bandwidth and an extended common mode voltage range.

Product details

Product type Analog output Common-mode voltage (max) (V) 80 Common-mode voltage (min) (V) -16 Input offset (±) (max) (µV) 2000 Input offset drift (±) (typ) (µV/°C) 2.5 Voltage gain (V/V) 20 CMRR (min) (dB) 100 Bandwidth (kHz) 500 Supply voltage (max) (V) 18 Supply voltage (min) (V) 2.7 Iq (max) (mA) 0.95 Number of channels 1 Comparators (#) 0 Gain error (%) 1 Gain error drift (±) (max) (ppm/°C) 100 Slew rate (V/µs) 1 Features Low-side Capable Rating Catalog Operating temperature range (°C) -40 to 125
Product type Analog output Common-mode voltage (max) (V) 80 Common-mode voltage (min) (V) -16 Input offset (±) (max) (µV) 2000 Input offset drift (±) (typ) (µV/°C) 2.5 Voltage gain (V/V) 20 CMRR (min) (dB) 100 Bandwidth (kHz) 500 Supply voltage (max) (V) 18 Supply voltage (min) (V) 2.7 Iq (max) (mA) 0.95 Number of channels 1 Comparators (#) 0 Gain error (%) 1 Gain error drift (±) (max) (ppm/°C) 100 Slew rate (V/µs) 1 Features Low-side Capable Rating Catalog Operating temperature range (°C) -40 to 125
SOT-23 (DBV) 5 8.12 mm² 2.9 x 2.8
  • Wide Common-Mode Voltage:
    –16 V to +80 V
  • Low Error: 3.0% Over Temp (maximum)
  • Bandwidth: Up to 500 kHz
  • Three Transfer Functions Available: 20 V/V,
    50 V/V, and 100 V/V
  • Quiescent Current: 900 µA (maximum)
  • Complete Current Sense Solution
  • APPLICATIONS
    • Welding Equipment
    • Notebook Computers
    • Cell Phones
    • Telecom Equipment
    • Automotive
    • Power Management
    • Battery Chargers

All other trademarks are the property of their respective owners

  • Wide Common-Mode Voltage:
    –16 V to +80 V
  • Low Error: 3.0% Over Temp (maximum)
  • Bandwidth: Up to 500 kHz
  • Three Transfer Functions Available: 20 V/V,
    50 V/V, and 100 V/V
  • Quiescent Current: 900 µA (maximum)
  • Complete Current Sense Solution
  • APPLICATIONS
    • Welding Equipment
    • Notebook Computers
    • Cell Phones
    • Telecom Equipment
    • Automotive
    • Power Management
    • Battery Chargers

All other trademarks are the property of their respective owners

The INA193–INA198 family of current shunt monitors with voltage output can sense drops across shunts at common-mode voltages from –16 V to +80 V, independent of the INA19x supply voltage. They are available with three output voltage scales: 20 V/V, 50 V/V, and 100 V/V. The 500 kHz bandwidth simplifies use in current control loops. The INA193–INA195 devices provide identical functions but alternative pin configurations to the INA196–INA198 devices, respectively.

The INA193–INA198 devices operate from a single 2.7-V to 18-V supply, drawing a maximum of 900 µA of supply current. They are specified over the extended operating temperature range (–40°C to +125°C), and are offered in a space-saving SOT-23 package.

The INA193–INA198 family of current shunt monitors with voltage output can sense drops across shunts at common-mode voltages from –16 V to +80 V, independent of the INA19x supply voltage. They are available with three output voltage scales: 20 V/V, 50 V/V, and 100 V/V. The 500 kHz bandwidth simplifies use in current control loops. The INA193–INA195 devices provide identical functions but alternative pin configurations to the INA196–INA198 devices, respectively.

The INA193–INA198 devices operate from a single 2.7-V to 18-V supply, drawing a maximum of 900 µA of supply current. They are specified over the extended operating temperature range (–40°C to +125°C), and are offered in a space-saving SOT-23 package.

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Technical documentation

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Type Title Date
* Data sheet INA19x Current Shunt Monitor −16 V to +80 V Common-Mode Range datasheet (Rev. G) PDF | HTML 03 Jan 2015
Application note Using a PCB Copper Trace as a Current-Sense Shunt Resistor PDF | HTML 25 Jan 2022
Selection guide Current Sense Amplifiers (Rev. E) 20 Sep 2021
E-book Simplifying Current Sensing (Rev. A) 09 Jan 2020
Technical article How to get started with current sense amplifiers – part 1 19 May 2015
Technical article Current sensing revisited 05 Jul 2013
Analog Design Journal A dual-polarity, bidirectional current-shunt monitor 22 Oct 2008
Analog Design Journal Q4 2008 Issue Analog Applications Journal 22 Oct 2008
Analog Design Journal Low-cost current-shunt monitor IC revives moving-coil meter design 18 Apr 2006

Design & development

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

Simulation model

INA193 PSpice Model (Rev. C)

SBOC054C.ZIP (58 KB) - PSpice Model
Simulation model

INA193 TINA-TI Reference Design (Rev. C)

SBOC164C.TSC (101 KB) - TINA-TI Reference Design
Simulation model

INA193 TINA-TI Spice Model (Rev. B)

SBOM225B.ZIP (5 KB) - TINA-TI Spice Model
Calculation tool

CS-AMPLIFIER-ERROR-TOOL — Current sense amplifier comparison and error tool

This Excel calculator provides a comparison between two and five of our standard current sense amplifiers, delivering a chart containing the basic parameters of each device. This calculator also takes system condition inputs from users such as common-mode voltage, supply voltage, shunt resistor (...)
Design tool

CIRCUIT060030 — High-side, bidirectional current-sensing circuit with transient protection

This high-side, bidirectional current sensing solution can accurately measure current in the range of –40 A to 40 A for a 36-V voltage bus. The linear voltage output is 100 mV to 4.90 V. This solution is also designed to survive IEC61000-4-4 level 4 EFT stress (Voc = 2 kV; Isc = 40 A; 8/20 (...)
Design tool

CIRCUIT060035 — Bidirectional current sensing with a window comparator circuit

This bidirectional current sensing solution uses a current-sense amplifier and a high-speed dual comparator with a rail-to-rail input common mode range to create over-current (OC) alert signals at the comparator outputs (OUTA and OUTB) if the input current (IG1) rises above 100 A or falls below (...)
Design tool

CIRCUIT060037 — Precision over-current latch circuit

This high-side, current sensing solution uses a current sense amplifier, a comparator with an integrated reference and a P-channel MOSFET to create an over-current latch circuit. When a load current greater than 200 mA is detected, the circuit disconnects the system from its power source. The (...)
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 (...)
User guide: PDF
Reference designs

PMP10487 — 6V - 18V Input Sync-Buck 0.5A LED Driver Reference Design

This LM20323 integrated FET sync-buck converter regulates the current in a white LED to 0.5A with minimum parts count. LED current is accurately measured with an INA193 and provides feedback to regulate the output current.
Test report: PDF
Schematic: PDF
Reference designs

TIDA-00302 — Current Shunt Monitor with Transient Robustness Reference Design

This high-side current shunt monitor is used to measure the voltage developed across a current-sensing resistor when current passes through it.

Additionally, an external protection circuit is implemented to provide surge and fast-transient protection and demonstrate the different immunity levels to (...)

Design guide: PDF
Schematic: PDF
Package Pins Download
SOT-23 (DBV) 5 View options

Ordering & quality

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  • Ongoing reliability monitoring

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