Product details

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 Catalog Operating temperature range (C) -40 to 125
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 Catalog Operating temperature range (C) -40 to 125
SOIC (D) 14 52 mm² 8.65 x 6 TSSOP (PW) 14 32 mm² 5 x 6.4 VSSOP (DGS) 10 9 mm² 3 x 3
  • Complete current sense solution
  • Three gain options available:
    • INA203 = 20 V/V
    • INA204 = 50 V/V
    • INA205 = 100 V/V
  • Dual comparators:
    • Comparator 1 with latch
    • Comparator 2 with optional delay
  • Common-mode range: –16 V to 80 V
  • High accuracy: 3.5% (maximum) over temperature
  • Bandwidth: 500 kHz
  • Quiescent current: 1.8 mA
  • Packages: SO-14, TSSOP-14, VSSOP-10
  • Complete current sense solution
  • Three gain options available:
    • INA203 = 20 V/V
    • INA204 = 50 V/V
    • INA205 = 100 V/V
  • Dual comparators:
    • Comparator 1 with latch
    • Comparator 2 with optional delay
  • Common-mode range: –16 V to 80 V
  • High accuracy: 3.5% (maximum) over temperature
  • Bandwidth: 500 kHz
  • Quiescent current: 1.8 mA
  • Packages: SO-14, TSSOP-14, VSSOP-10

The INA203, INA204, and INA205 are a family of unidirectional current-shunt monitors with voltage output, dual comparators, and voltage reference. The INA203, INA204, and INA205 can sense drops across shunts at common-mode voltages from –16 V to 80 V. The INA203, INA204, and INA205 are available with three output voltage scales: 20 V/V, 50 V/V, and 100 V/V, with up to 500-kHz bandwidth.

The INA203, INA204, and INA205 also incorporate two open-drain comparators with internal 0.6-V references. On 14-pin versions, the comparator references can be overridden by external inputs. Comparator 1 includes a latching capability, and Comparator 2 has a user-programmable delay. 14-pin versions also provide a 1.2-V reference output.

The INA203, INA204, and INA205 operate from a single 2.7-V to 18-V supply. They are specified over the extended operating temperature range of –40°C to 125°C.

The INA203, INA204, and INA205 are a family of unidirectional current-shunt monitors with voltage output, dual comparators, and voltage reference. The INA203, INA204, and INA205 can sense drops across shunts at common-mode voltages from –16 V to 80 V. The INA203, INA204, and INA205 are available with three output voltage scales: 20 V/V, 50 V/V, and 100 V/V, with up to 500-kHz bandwidth.

The INA203, INA204, and INA205 also incorporate two open-drain comparators with internal 0.6-V references. On 14-pin versions, the comparator references can be overridden by external inputs. Comparator 1 includes a latching capability, and Comparator 2 has a user-programmable delay. 14-pin versions also provide a 1.2-V reference output.

The INA203, INA204, and INA205 operate from a single 2.7-V to 18-V supply. They are 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 INA20x –16-V to 80-V, 500-kHz Current Sense Amplifier With Dual Comparators datasheet (Rev. F) 18 Jun 2021
Application note Measuring Current for Handle Multiple Out-of-Range Conditions (Rev. C) 04 Oct 2021
Technical article Solving the multidecade current-measurement challenge in your 48-V BMS application 14 Jun 2021
Technical article How current-sense amplifiers monitor satellite health 08 Feb 2021
Technical article A key to accurate system thermal management: monitoring both current flow and temperature 04 Oct 2018
Application note Overcurrent event detection circuit 31 Jul 2018
Application note Overcurrent and Out-of-Range Protections (Rev. C) 18 May 2018
Technical article System trade-offs for high- and low-side current measurements 01 Jun 2017

Design & development

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

Simulation model

INA203 TINA-TI Spice Model

SBOM867.ZIP (14 KB) - TINA-TI Spice Model
Simulation model

INA203 TINA-TI Reference Design

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

INA203 PSpice Model

SBOMBF9.ZIP (30 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 (...)
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 (...)
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 (...)

Package Pins Download
SOIC (D) 14 View options
TSSOP (PW) 14 View options
VSSOP (DGS) 10 View options

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