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INA168-Q1

ACTIVE

AEC-Q100, 2.7 to 60V, 800kHz Variable gain current sense amplifier

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Data sheet

INA168-Q1

ACTIVE
Data sheet Order now

Product details

Product type Analog output Common-mode voltage (max) (V) 60 Common-mode voltage (min) (V) 2.7 Input offset (±) (max) (µV) 1000 Input offset drift (±) (typ) (µV/°C) 1 Voltage gain (V/V) adjustable CMRR (min) (dB) 100 Bandwidth (kHz) 32 Supply voltage (max) (V) 60 Supply voltage (min) (V) 2.7 Iq (max) (mA) 0.06 Number of channels 1 Comparators (#) 0 Gain error (%) 2 Gain error drift (±) (max) (ppm/°C) 150 Features Current Output Rating Automotive Operating temperature range (°C) -40 to 125
Product type Analog output Common-mode voltage (max) (V) 60 Common-mode voltage (min) (V) 2.7 Input offset (±) (max) (µV) 1000 Input offset drift (±) (typ) (µV/°C) 1 Voltage gain (V/V) adjustable CMRR (min) (dB) 100 Bandwidth (kHz) 32 Supply voltage (max) (V) 60 Supply voltage (min) (V) 2.7 Iq (max) (mA) 0.06 Number of channels 1 Comparators (#) 0 Gain error (%) 2 Gain error drift (±) (max) (ppm/°C) 150 Features Current Output Rating Automotive Operating temperature range (°C) -40 to 125
SOT-23 (DBV) 5 8.12 mm² 2.9 x 2.8 TSSOP (PW) 8 19.2 mm² 3 x 6.4
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature Range
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C6
  • Complete Unipolar High-Side Current-Measurement Circuit
  • Wide Supply and Common-Mode Ranges:
    • INA138-Q1: 2.7 V to 36 V
    • INA168-Q1: 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
  • Packages: TSSOP-8, SOT-23-5 (INA168-Q1)
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature Range
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C6
  • Complete Unipolar High-Side Current-Measurement Circuit
  • Wide Supply and Common-Mode Ranges:
    • INA138-Q1: 2.7 V to 36 V
    • INA168-Q1: 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
  • Packages: TSSOP-8, SOT-23-5 (INA168-Q1)

The INA138-Q1 and INA168-Q1 (INA1x8-Q1) devices are high-side, unidirectional, current sense amplifiers. Wide input common-mode voltage range, low quiescent current, and TSSOP and SOT-23 packaging enable use in a variety of applications.

Input common-mode and power-supply voltages are independent, and range from 2.7 V to 36 V for the INA138-Q1, and 2.7 V to 60 V for the INA168-Q1. 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 devices are available in a TSSOP-8 package. The INA168-Q1 is also available in a SOT-23-5 package. Both devices are specified for the –40°C to +125°C temperature range.

 

The INA138-Q1 and INA168-Q1 (INA1x8-Q1) devices are high-side, unidirectional, current sense amplifiers. Wide input common-mode voltage range, low quiescent current, and TSSOP and SOT-23 packaging enable use in a variety of applications.

Input common-mode and power-supply voltages are independent, and range from 2.7 V to 36 V for the INA138-Q1, and 2.7 V to 60 V for the INA168-Q1. 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 devices are available in a TSSOP-8 package. The INA168-Q1 is also available in a SOT-23-5 package. Both devices are specified for the –40°C to +125°C temperature range.

 
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Pin-for-pin with same functionality to the compared device
INA138-Q1 ACTIVE AEC-Q100, 2.7 to 36V, 800kHz Variable gain current sense amplifier The INA138-Q1 is functionally equivalent supporting up to 36 V
INA169-Q1 ACTIVE AEC-Q100, 2.7 to 60V, 440kHz Variable gain current sense amplifier The INA169-Q1 is functionally equivalent with higher bandwidth

Technical documentation

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Type Title Date
* Data sheet INA1x8-Q1 Automotive-Grade, High-Side, Current-Output, Current-Shunt Monitor datasheet (Rev. J) PDF | HTML 03 Aug 2018
Application note Extending the Common-Mode Voltage Range of Current-Output Current Shunt Monitors (Rev. A) PDF | HTML 21 Mar 2022
Application note Using a PCB Copper Trace as a Current-Sense Shunt Resistor PDF | HTML 25 Jan 2022
Circuit design High-voltage, high-side floating current sensing circuit using current output, c 28 Jun 2018
Application note Benefits of Intergated Low Inductive Shunt for PWM Applications 17 Jun 2017
Application note Precision LED Brightness and Color Mixing With Discrete Current Sense Amplifiers 28 Feb 2017

Design & development

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Simulation model

INA168 PSpice Model (Rev. A)

SBOC030A.ZIP (55 KB) - PSpice Model
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Simulation model

INA168 TINA-TI Reference Design (Rev. B)

SBOC161B.TSC (81 KB) - TINA-TI Reference Design
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Simulation model

INA168 TINA-TI Spice Model (Rev. A)

SBOM222A.ZIP (3 KB) - TINA-TI Spice Model
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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 (...)
Supported products & hardware

Supported products & hardware

Products
Analog current-sense amplifiers
INA138 — 2.7 to 36V, 800kHz Variable gain current sense amplifier INA138-Q1 — AEC-Q100, 2.7 to 36V, 800kHz Variable gain current sense amplifier INA139 — 2.7 to 36V, 440kHz Variable gain current sense amplifier INA139-Q1 — AEC-Q100, 2.7 to 36V, 440kHz Variable gain current sense amplifier INA168 — 2.7 to 60V, 800kHz Variable gain current sense amplifier INA168-Q1 — AEC-Q100, 2.7 to 60V, 800kHz Variable gain current sense amplifier INA169 — 2.7 to 60V, 440kHz Variable gain current sense amplifier INA169-Q1 — AEC-Q100, 2.7 to 60V, 440kHz Variable gain current sense amplifier INA170 — 2.7 to 60V, bi-directional, 400kHz Variable gain current sense amplifier INA180 — 26V, 350kHz current sense amplifier INA180-Q1 — AEC-Q100, 26V, 350kHz current sense amplifier INA181 — 26-V bi-directional 350-kHz current-sense amplifier INA181-Q1 — AEC-Q100, 26V, bi-directional, 350kHz current sense amplifier INA183 — 2.7-V to 26-V, high-precision current sense amplifier with input supply INA185 — 26-V, 350-kHz, bi-directional, high-precision current sense amplifier in ultra-small SOT-563 package INA186 — 40-V, bidirectional, high-precision current sense amplifier with picoamp input bias & ENABLE INA186-Q1 — AEC-Q100, 40-V, bidirectional, high-precision current sense amplifier w/ picoamp input bias & ENABLE INA190 — 40-V, bidirectional, ultraprecise current sense amplifier with picoamp IB & ENABLE INA190-Q1 — AEC-Q100, 40V, bi-directional, ultra-precise current sense amplifier w/picoamp IB & ENABLE INA191 — 40V, ultra-precise current sense amplifier with ENABLE and picoamp IB in WCSP INA193 — -16 to 80V, 500kHz current sense amplifier INA193A-EP — Enhanced product, -16 to 80V, 500-kHz current sense amplifier INA193A-Q1 — AEC-Q100, -16 to 80V, 500kHz current sense amplifier INA194 — -16 to 80V, 500kHz current sense amplifier INA194A-Q1 — AEC-Q100, -16 to 80V, 500kHz current sense amplifier INA195 — -16 to 80V, 500kHz current sense amplifier INA195A-Q1 — AEC-Q100, -16 to 80V, 500kHz current sense amplifier INA196 — -16 to 80V, 500kHz current sense amplifier INA196A-Q1 — AEC-Q100, -16 to 80V, 500kHz current sense amplifier INA197 — -16 to 80V, 500kHz current sense amplifier INA197A-Q1 — AEC-Q100, -16 to 80V, 500kHz current sense amplifier INA198 — -16 to 80V, 500kHz current sense amplifier INA198A-Q1 — AEC-Q100, -16 to 80V, 500kHz current sense amplifier INA199 — 26V, bi-directional current sense amplifier INA199-Q1 — AEC-Q100, 26V, bi-directional current sense amplifier INA200 — -16 to 80V, 500kHz current sense amplifier w/ comparator INA200-Q1 — AEC-Q100, -16 to 80V, 500kHz current sense amplifier w/ comparator INA201 — -16 to 80V, 500kHz current sense amplifier w/ comparator INA201-Q1 — AEC-Q100, -16 to 80V, 500kHz current sense amplifier w/ comparator INA202 — -16 to 80V, 500kHz current sense amplifier w/ comparator INA202-Q1 — AEC-Q100, -16 to 80V, 500kHz current sense amplifier w/ comparator INA203 — -16 to 80V, 500kHz current sense amplifier w/ dual comparators INA203-Q1 — AEC-Q100, -16 to 80V, 500kHz current sense amplifier w/ dual comparators INA204 — -16 to 80V, 500kHz current sense amplifier w/ dual comparators INA205 — -16 to 80V, 500kHz current sense amplifier w/ dual comparators INA206 — -16 to 80V, 500kHz current sense amplifier w/ window comparator INA207 — -16 to 80V, 500kHz current sense amplifier w/ window comparator INA208 — -16 to 80V, 500kHz current sense amplifier w/ window comparator INA210 — 26V, bi-directional, high-precision current sense amplifier INA210-Q1 — AEC-Q100, 26V, bi-directional, high-precision current sense amplifier INA211 — 26V, bi-directional, high-precision current sense amplifier INA211-Q1 — AEC-Q100, 26V, bi-directional, high-precision current sense amplifier INA212 — 26V, bi-directional, high-precision current sense amplifier INA212-Q1 — AEC-Q100, 26V, bi-directional, high-precision current sense amplifier INA213 — 26V, bi-directional, high-precision current sense amplifier INA213-Q1 — AEC-Q100, 26V, bi-directional, high-precision current sense amplifier INA214 — 26V, bi-directional, high-precision current sense amplifier INA214-Q1 — AEC-Q100, 26V, bi-directional, high-precision current sense amplifier INA215 — 26V, bi-directional, high-precision current sense amplifier INA215-Q1 — AEC-Q100, 26V, bi-directional, high-precision current sense amplifier INA216 — 1.8 to 5.5V, high-precision current sense amplifier in wcsp INA2180 — 26V, dual channel, 350kHz current sense amplifier INA2180-Q1 — AEC-Q100, 26V, dual channel, 350kHz current sense amplifier INA2181 — 26V, dual channel, bi-directional, 350kHz current sense amplifier INA2181-Q1 — AEC-Q100, 26V, dual channel, bi-directional, 350kHz current sense amplifier INA2191 — 40-V, dual-channel, bidirectional, ultraprecise current sense amp w/ picoamp IB & ENABLE in wcsp INA223 — 26V, programmable-gain current sense amplifier & analog power monitor INA225 — 36V, bi-directional current sense amplifier w/ four pin-selectable gain settings INA225-Q1 — AEC-Q100, 36V, bi-directional current sense amplifier w/ four pin-selectable gain settings INA2290 — Dual-channel, 2.7-V to 120-V, 1.1-MHz, ultra-precise current sense amplifier INA240 — -4 to 80V, bidirectional, ultra-precise current sense amplifier with enhanced PWM rejection INA240-Q1 — AEC-Q100, -4 to 80V, bi-directional, ultra-precise current sense amplifier w/ enhanced pwm rejection INA240-SEP — -4 to 80V, ultra-precise current sense amplifier w/ enhanced pwm rejection in space enhanced plastic INA241A — -5-V to 110-V bidirectional ultraprecise current sense amplifier with enhanced PWM rejection INA241A-Q1 — AEC-Q100, -4-V to 110-V bidirectional ultraprecise current sense amp with enhanced PWM rejection INA241B — -5-V to 110-V bidirectional high-precision current sense amplifier with enhanced PWM rejection INA241B-Q1 — AEC-Q100, -4-V to 110-V bidirectional high-precision current sense amp with enhanced PWM rejection INA270 — -16 to 80V, split-stage current sense amplifier w/ in-line filter capability INA270A-Q1 — AEC-Q100, -16 to 80V, split-stage current sense amplifier w/ in-line filter capability INA271 — -16 to 80V, split-stage current sense amplifier w/ in-line filter capability INA271-HT — High temp, -16 to 80V, split-stage current sense amplifier w/ in-line filter capability INA271A-Q1 — AEC-Q100, -16 to 80V, split-stage current sense amplifier w/ in-line filter capability INA280 — 2.7-V to 120-V, 1.1-MHz, high-precision current sense amplifier in small (SC-70) package INA280-Q1 — AEC-Q100, 2.7-V to 120-V, 1.1-Mhz current sense amplifier in small (SC-70) package INA281 — -4-V to 110-V, 1.3-MHz, high-precision current sense amplifier INA281-Q1 — AEC-Q100, -4-V to 110-V, 1.3-MHz current sense amplifier INA282 — -14 to 80V, bi-directional current sense amplifier INA282-Q1 — AEC-Q100, -14 to 80V, bi-directional current sense amplifier INA283 — -14 to 80V, bi-directional current sense amplifier INA283-Q1 — AEC-Q100, -14 to 80V, bi-directional current sense amplifier INA284 — -14 to 80V, bi-directional current sense amplifier INA284-Q1 — AEC-Q100, -14 to 80V, bi-directional current sense amplifier INA285 — -14 to 80V, bi-directional current sense amplifier INA285-Q1 — AEC-Q100, -14 to 80V, bi-directional current sense amplifier INA286 — -14 to 80V, bi-directional current sense amplifier INA286-Q1 — AEC-Q100, -14 to 80V, bi-directional current sense amplifier INA290 — 2.7 to 120V, 1.1MHz, ultra-precise current sense amplifier in small (SC-70) package INA290-Q1 — AEC-Q100, 2.7-V to 120-V, 1.1-MHz, ultra-precise current sense amplifier in small (SC-70) package INA293 — -4-V to 110-V, 1.3-MHz, ultra-precise current sense amplifier INA293-Q1 — AEC-Q100, -4-V to 110-V, 1.3-MHz, ultra-precise current sense amplifier INA296A — -5-V to 110-V, bidirectional, 1.1-MHz 8-V/µs ultraprecise current sense amplifier INA296A-Q1 — AEC-Q100, -5-V to 110-V, bidirectional, 1.1-MHz 8-V/µs ultraprecise current sense amplifier INA296B — -5-V to 110-V, bidirectional, 1.1-MHz 8-V/µs high-precision current sense amplifier INA296B-Q1 — AEC-Q100, -5-V to 110-V, bidirectional, 1.1-MHz 8-V/µs high-precision current sense amplifier INA300 — 36V current sense comparator INA300-Q1 — AEC-Q100, 36V current sense comparator INA301 — 36V, 550kHz, 4V/µs, high-precision current sense amplifier w/ comparator INA301-Q1 — AEC-Q100, 36V, 550kHz, 4V/µs, high-precision current sense amplifier w/ comparator INA302 — 36V, bi-directional, 550kHz, 4V/µs, high-precision current sense amplifier w/ dual comparators INA302-Q1 — AEC-Q100, 36V, bi-directional, 550kHz, 4V/µs, high-precision current sense amp w/ dual comparators INA303 — 36V, bi-directional, 550kHz, 4V/µs, high-precision current sense amplifier w/ window comparator INA303-Q1 — AEC-Q100, 36V, bi-directional, 550kHz, 4V/µs, high-precision current sense amp w/ window comparator INA381 — 26-V, 350-kHz current sense amplifier with integrated over-current comparator INA381-Q1 — AEC-Q100, 26-V, 350-kHz current sense amplifier with integrated overcurrent comparator INA4180 — 26V, quad channel, 350kHz current sense amplifier INA4180-Q1 — AEC-Q100, 26V, quad channel, 350kHz current sense amplifier INA4181 — 26V, quad channel, bi-directional, 350kHz current sense amplifier INA4181-Q1 — AEC-Q100, 26V, quad channel, bi-directional, 350kHz current sense amplifier INA4290 — Quad-channel, 120-V, high-voltage, high-bandwidth, unidirectional current sense amplifier INA901-SP — Radiation hardened, -15-V to 65-V, split-stage current sense amplifier with in-line filter option LMP8278Q-Q1 — AEC-Q100, -2 to 40V, split-stage current sense amplifier w/ in-line filter capability LMP8480 — 4 to 76V current sense amplifier LMP8480-Q1 — AEC-Q100, 4 to 76V current sense amplifier LMP8481 — 4 to 76V, bi-directional current sense amplifier LMP8481-Q1 — AEC-Q100, 4 to 76V, bi-directional current sense amplifier LMP8601 — -22 to 60V, bi-directional current sense amplifier w/ in-line filter capability LMP8601-Q1 — AEC-Q100, -22 to 60V, bi-directional current sense amplifier w/ in-line filter capability LMP8602 — -22 to 60V, bi-directional current sense amplifier w/ in-line filter capability LMP8602-Q1 — AEC-Q100, -22 to 60V, bi-directional current sense amplifier w/ in-line filter capability LMP8603 — -22 to 60V, bi-directional current sense amplifier w/ in-line filter capability LMP8603-Q1 — AEC-Q100, -22 to 60V, bi-directional current sense amplifier w/ in-line filter capability LMP8640 — -2 to 42V, 950kHz current sense amplifier LMP8640-Q1 — AEC-Q100, -2 to 42V, 950kHz current sense amplifier LMP8640HV — -2 to 76V, 950kHz current sense amplifier LMP8645 — -2 to 42V, 990kHz, configurable gain current sense amplifier LMP8645HV — -2 to 76V, 990kHz, configurable gain current sense amplifier LMP8646 — -2 to 76V, configurable gain and bandwidth, high-speed current limiter
Analog current-sense amplifiers with integrated shunt resistor
INA250 — 36V, bi-directional, precision current sense amplifier w/int. shunt resistor INA250-Q1 — AEC-Q100, 36V, bi-directional, precision current sense amplifier w/int. shunt resistor INA253 — 80V, bi-directional, precision current sense amp w/pwm rejection & int. shunt resistor INA253-Q1 — AEC-Q100, 80V, bi-directional, precision current sense amp w/pwm rejection & int. shunt resistor
Digital power monitors
INA209 — 26V, 12-bit, i2c output current/voltage/power monitor w/ analog comparator INA219 — 26-V 12-bit I2C output digital power monitor INA220 — 26V, 12-bit, i2c output current/voltage/power monitor INA220-Q1 — AEC-Q100, 26V, 12-bit, i2c output current/voltage/power monitor INA226 — 36V, 16-bit, ultra-precise i2c output current/voltage/power monitor w/alert INA226-Q1 — AEC-Q100, 36V, 16-bit, ultra-precise, i2c output current/voltage/power monitor w/alert INA228 — 85-V, 20-bit, ultra-precise, I2C output current/voltage/power/energy/charge monitor with alert INA228-Q1 — AEC-Q100, 85-V, 20-bit, ultraprecise, I²C output current/voltage/power/energy/charge monitor INA229 — 85-V, 20-bit, ultra-precise, SPI output current/voltage/power/energy/charge monitor with alert INA229-Q1 — AEC-Q100, 85-V, 20-bit, ultraprecise, SPI output current/voltage/power/energy/charge monitor INA230 — 36-V, 16-bit, I²C output current, voltage and power monitor with alert INA231 — 28V, 16-bit, i2c output current/voltage/power monitor w/alert in wcsp INA233 — 36V, 16-bit, ultra-precise i2c & pmbus output current/voltage/power/energy monitor w/alert INA234 — 28-V, 12-bit, I²C output current/voltage/power monitor with alert in WCSP INA236 — 48-V, 16-bit ultraprecise I²C output digital power monitor with alert in WCSP INA237 — 85-V, 16-bit, I2C output current/voltage/power monitor with alert INA237-Q1 — AEC-Q100, 85-V, 16-bit, I²C output current/voltage/charge monitor INA238 — 85-V, 16-bit, high-precision I2C output current/voltage/power monitor with alert INA238-Q1 — AEC-Q100, 85-V, 16-bit, high-precision, I²C output current/voltage/charge monitor INA239 — 85-V, 16-bit, high-precision, SPI output current/voltage/power monitor with alert INA239-Q1 — AEC-Q100, 85-V, 16-bit, high-precision, SPI output current/voltage/power monitor INA3221 — 26V, triple channel, 13-bit, i2c output current/voltage monitor w/alerts INA3221-Q1 — AEC-Q100, 26V, triple channel, 13-bit, i2c output current/voltage monitor w/alerts LMP92064 — 2V, 12-bit, fast simultaneous sampling SPI output current/voltage monitor
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CIRCUIT060035 — Bidirectional current sensing with a window comparator circuit

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

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TINA-TI — SPICE-based analog simulation program

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