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Product details

Parameters

Common mode voltage (Max) (V) 80 Common mode voltage (Min) (V) -16 Input offset (+/-) (Max) (uV) 2500 Input offset drift (+/-) (Typ) (uV/C) 5 Gain (V/V) 20 Gain error (%) 1 Gain error drift (+/-) (Max) (ppm/°C) 100 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 Features Alert Function, Low-side Capable Rating Automotive Operating temperature range (C) -40 to 125 open-in-new Find other Current sense amplifiers analog output

Package | Pins | Size

TSSOP (PW) 14 32 mm² 5 x 6.4 open-in-new Find other Current sense amplifiers analog output

Features

  • 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

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Description

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

Design & development

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

Design tools & simulation

SIMULATION MODELS Download
SBOM867.ZIP (14 KB) - TINA-TI Spice Model
SIMULATION MODELS Download
SBOM868.TSC (184 KB) - TINA-TI Reference Design
SIMULATION TOOLS Download
SPICE-based analog simulation program
TINA-TI 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 (...)
document-generic User guide

Reference designs

REFERENCE DESIGNS Download
Current Shunt Monitor with Transient Robustness Reference Design
TIDA-00302 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 (...)

document-generic Schematic document-generic User guide
Design files

CAD/CAE symbols

Package Pins Download
TSSOP (PW) 14 View options

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