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INA199B1RSWT

TIINA199B1RSWT

Texas Instruments
Amplifier Circuit 10-UQFN (1.8x1.4)
531 in stock
Datasheet Digi-Key Compare Prices

Overview

The INA199B1RSWT is a high-side, zero-drift current-shunt monitor designed for precision current sensing across a wide common-mode voltage range of -0.3V to 26V. This voltage-output amplifier simplifies power monitoring by providing a fixed gain of 50V/V in a compact 10-UQFN package, making it ideal for space-constrained power management circuits.

Why Choose This Part

The zero-drift architecture allows for high-accuracy sensing with a maximum error of 1.5 percent while drawing only 0.1mA of current. Its ability to sense voltages down to -0.3V enables accurate monitoring even during ground bounce or slightly negative common-mode conditions.

Applications

Battery Charging Systems
Monitoring charge and discharge cycles in notebook computers and mobile devices to ensure battery longevity and safety.
Qi Wireless Charging
Precise current measurement in wireless power transmitters to maintain compliance with Qi standards.
Telecom Power Distribution
Real-time current monitoring in telecommunications infrastructure for load balancing and fault detection.
Handheld Electronics
Integrating into cell phones and tablets where low quiescent current and small PCB footprints are critical.

Key Specifications

Mounting Type Surface Mount
Package / Case 10-UFQFN
Operating Temperature -40degC ~ 125degC
Supplier Device Package 10-UQFN (1.8x1.4)

Getting Started

To evaluate this part, designers often use TI's generic current-sense amplifier evaluation modules or prototype with the 1.8mm x 1.4mm UQFN footprint on a breakout board. Ensure the shunt resistor is placed close to the IN+ and IN- pins to minimize trace resistance errors.

INA199B1 Family

Comparing specs that differ across variants. The current part is highlighted.

Part Number Package Stock
INA199B1RSWT (this part) UFQFN-10 531
INA199B1DCKR TSSOP-6 95,912
INA199B1RSWR UFQFN-10 5,840
INA199B1DCKT TSSOP-6 43,031

Also Consider

INA199A1 TITexas Instruments - An alternative version in a SC70-6 package for designs that prefer leaded packages over UQFN.
MAX44284 Maxim Integrated / Analog Devices - A high-precision current-sense amplifier with extremely low input offset voltage for high-side monitoring.