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INA203-Q1

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AEC-Q100, -16 to 80V, 500kHz current sense amplifier w/ dual comparators

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Data sheet

INA203-Q1

ACTIVE
Data sheet Order now

Product details

Product type Analog output with integrated comparator Common-mode voltage (max) (V) 80 Common-mode voltage (min) (V) -16 Input offset (±) (max) (µV) 2500 Input offset drift (±) (typ) (µV/°C) 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) 2.8 Number of channels 1 Comparators (#) 2 Gain error (%) 1 Gain error drift (±) (max) (ppm/°C) 100 Slew rate (V/µs) 1 Features Alert Function, Low-side Capable Rating Automotive Operating temperature range (°C) -40 to 125
Product type Analog output with integrated comparator Common-mode voltage (max) (V) 80 Common-mode voltage (min) (V) -16 Input offset (±) (max) (µV) 2500 Input offset drift (±) (typ) (µV/°C) 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) 2.8 Number of channels 1 Comparators (#) 2 Gain error (%) 1 Gain error drift (±) (max) (ppm/°C) 100 Slew rate (V/µs) 1 Features Alert Function, Low-side Capable Rating Automotive Operating temperature range (°C) -40 to 125
TSSOP (PW) 14 32 mm² 5 x 6.4
  • Qualified for Automotive Applications
  • Current Sense Amplifier
    • Common-Mode Range: –16 V to +80 V
    • Accuracy: 3.5% (Maximum) Over Temperature
    • Bandwidth: 500 kHz
    • Gain: 20 V/V
  • Integrated Dual Comparators:
    • Comparator 1 With Latch
    • Comparator 2 With Optional Delay
  • Quiescent Current: 1.8 mA
  • Latch-Up Performance Meets 100 mA Per AEC-
    Q100, Level I
  • Packages: TSSOP-14
  • APPLICATIONS
    • Electric Power Steering (EPS) Systems
    • Body Control Modules
    • Brake Systems
    • Electronic Stability Control (ESC) Systems

All other trademarks are the property of their respective owners
  • Qualified for Automotive Applications
  • Current Sense Amplifier
    • Common-Mode Range: –16 V to +80 V
    • Accuracy: 3.5% (Maximum) Over Temperature
    • Bandwidth: 500 kHz
    • Gain: 20 V/V
  • Integrated Dual Comparators:
    • Comparator 1 With Latch
    • Comparator 2 With Optional Delay
  • Quiescent Current: 1.8 mA
  • Latch-Up Performance Meets 100 mA Per AEC-
    Q100, Level I
  • Packages: TSSOP-14
  • APPLICATIONS
    • Electric Power Steering (EPS) Systems
    • Body Control Modules
    • Brake Systems
    • Electronic Stability Control (ESC) Systems

All other trademarks are the property of their respective owners

The INA203-Q1 is a unidirectional current-shunt monitor (also called a current sense amplifier) with voltage output, dual comparators, and voltage reference. The INA203-Q1 can sense drops across shunts at common-mode voltages from –16 V to +80 V. The INA203-Q1 is available with 20-V/V gain with up to 500-kHz bandwidth.

The INA203-Q1 incorporates two open-drain comparators with internal 0.6-V references and also provides a 1.2-V reference output. The comparator references can be overridden by external inputs. Comparator 1 includes a latching capability, and Comparator 2 has a user-programmable delay.

The INA203-Q1 operates from a single 2.7 V to 18 V supply. It is specified over the extended operating temperature range of –40°C to +125°C.

The INA203-Q1 is a unidirectional current-shunt monitor (also called a current sense amplifier) with voltage output, dual comparators, and voltage reference. The INA203-Q1 can sense drops across shunts at common-mode voltages from –16 V to +80 V. The INA203-Q1 is available with 20-V/V gain with up to 500-kHz bandwidth.

The INA203-Q1 incorporates two open-drain comparators with internal 0.6-V references and also provides a 1.2-V reference output. The comparator references can be overridden by external inputs. Comparator 1 includes a latching capability, and Comparator 2 has a user-programmable delay.

The INA203-Q1 operates from a single 2.7 V to 18 V supply. It is specified over the extended operating temperature range of –40°C to +125°C.
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Technical documentation

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Type Title Date
* Data sheet INA203-Q1 Automotive Grade, –16 V to +80 V, Low- or High-Side, High-Speed, Voltage Output Current Shunt Monitor With Dual Comparators and Reference datasheet (Rev. A) PDF | HTML 28 Apr 2016
Application note Measuring Current To Detect Out-of-Range Conditions (Rev. D) PDF | HTML 10 Mar 2022
Application note Using a PCB Copper Trace as a Current-Sense Shunt Resistor PDF | HTML 25 Jan 2022
Application note Measuring Current for Handle Multiple Out-of-Range Conditions (Rev. C) PDF | HTML 04 Oct 2021
Circuit design Overcurrent event detection circuit 31 Jul 2018

Design & development

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Simulation model

INA203 PSpice Model

SBOMBF9.ZIP (30 KB) - PSpice Model
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Simulation model

INA203 TINA-TI Reference Design

SBOM868.TSC (184 KB) - TINA-TI Reference Design
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Simulation model

INA203 TINA-TI Spice Model

SBOM867.ZIP (14 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
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Analog current-sense amplifiers with integrated shunt resistor
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Digital power monitors
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TIDA-00302 — Current Shunt Monitor with Transient Robustness Reference Design

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