Texas Instruments INA190A1IRSWT

Mfr. Part

INA190A1IRSWT

Manufacturer

Luminary Micro / Texas Instruments

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Detailed Description

Zero-drift, high-side current sense amplifier. Single channel. Rail-to-rail output. Ultra-small 10-UQFN (1.8 mm x 1.4 mm) package for space-constrained boards. Operates from 1.7 V to 5.5 V. Designed to measure small shunt voltages accurately over -40°C to +125°C. RoHS3 compliant. Supplied in Tape & Reel. Base product family: INA190.

Key Features

Zero-drift architecture for low offset and low drift over temperature

Single amplifier channel (1 circuit)

Rail-to-rail output for maximum dynamic range on low supply voltages

Supply voltage range: 1.7 V to 5.5 V

-3 dB bandwidth around 20 kHz

Gain-bandwidth product around 45 kHz

Ultra-low input bias current (about 500 pA)

Low quiescent supply current (see datasheet)

Operating temperature: -40°C to +125°C (TA)

RoHS3 compliant

Package: 10-UQFN (1.8 x 1.4 mm), surface mount

Series: INA190 Zero-Drift

Key Advantages

High accuracy for small current measurements, thanks to zero-drift design

Works in low-voltage systems and 5 V systems

Tiny footprint reduces PCB area and enables dense layouts

Rail-to-rail output simplifies interfacing to ADCs and controllers

Low input bias minimizes error with large shunt resistors

Stable performance across wide temperature range

Simple, low-power front end for battery devices

Packaging

Type: Tape & Reel (TR) for automated SMT assembly

Package / Case: 10-UQFN (1.8 mm x 1.4 mm); also referenced as 10-UFQFN

Supplier Device Package: 10-UQFN (1.8 x 1.4)

Mounting: Surface Mount

Pins: 10 terminals; typical functions include sense inputs, output, supply, reference (check datasheet for exact pinout)

Material: Molded epoxy over copper leadframe; industry-standard terminations

Size: 1.8 mm x 1.4 mm body; very low profile

Thermal characteristics: Low thermal mass; best results with solid ground plane and thermal vias per datasheet recommendations

Electrical properties related to package: Short leads for low parasitic resistance/inductance; optimized for low-noise current sensing

Lifecycle

Status: Active and in production based on the latest available information

Not nearing discontinuation to the best of our knowledge

Equivalent or alternative models:

- Same family, different gains: INA190A2IRSWT, INA190A3IRSWT, INA190A4IRSWT, INA190A5IRSWT

- Similar low-power current-sense amplifiers: INA181 (A1/A2/A3/A4), INA180 series

- Bidirectional, low-power options: INA199 series (various fixed gains)

- Higher bandwidth / faster response: INA290 series

- Digital shunt monitors (I2C): INA226, INA219

- Enhanced PWM common-mode rejection: INA240

If you need a drop-in or pin-compatible replacement, or more alternatives, please contact our sales team via our website for tailored assistance.

Key Application Areas

Battery current monitoring and power management in portable devices

LED driver current feedback and protection

Motor control and industrial drives (high-side current sensing)

DC/DC converter current limit, profiling, and efficiency tracking

Server, telecom, and networking power rail monitoring

Consumer electronics, wearables, and IoT nodes with tight space budgets

Automotive subsystems operating from -40°C to +125°C

Medical and instrumentation equipment needing precise, low-drift sensing

Datasheet

Our website hosts the most authoritative datasheet for INA190A1IRSWT. Download it from this page to confirm all specifications, pinouts, and design guidelines.

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In-stock quantity: 5705 units. ROHS3 compliant. Tape & Reel for SMT.

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