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INA199A2DCKR

TIINA199A2DCKR

Texas Instruments
Amplifier Circuit SC-70-6
NRND30,231 in stock

Overview

The INA199A2DCKR is a voltage-output, current-shunt monitor designed for low-side or high-side sensing with a fixed gain of 100V/V. This zero-drift amplifier can sense drops across shunts at common-mode voltages from -0.3V to 26V, independent of the supply voltage. It is particularly effective for power management in space-constrained applications due to its tiny SC-70 footprint.

Why Choose This Part

The zero-drift architecture ensures high accuracy with a maximum 1.5 percent error across the operating temperature range of -40C to 125C. Its extremely low quiescent current of 0.1mA makes it ideal for battery-operated systems where every microamp counts.

Applications

Power Management
Monitoring current flow in notebook and handheld devices to manage thermal profiles and battery health.
Wireless Charging
Current monitoring in Qi-compliant wireless charging transmitters to ensure efficient power transfer and safety.
Battery Chargers
Providing accurate feedback for constant-current charging loops in portable electronics.
Telecom Equipment
Sensing current in high-reliability communication hardware within a wide temperature range.

Key Specifications

Mounting Type Surface Mount
Package / Case 6-TSSOP, SC-88, SOT-363
Operating Temperature -40degC ~ 125degC
Supplier Device Package SC-70-6

Getting Started

For prototyping, engineers can use the INA199EVM evaluation module to test shunt resistor configurations. Ensure the bypass capacitor is placed as close to the V+ pin as possible to maintain stability in noisy switching environments. Select a shunt resistor value that keeps the input differential voltage within the linear range based on the 100V/V gain.

INA199A2 Family

Part NumberDifferenceStock
INA199A2RSWR RSWR 5,634

Also Consider

INA180A2IDBVR TITexas Instruments - A more cost-effective alternative with a similar 100V/V gain for high-volume consumer applications.
MAX44284FAWT+T Maxim Integrated - Provides even lower power consumption and higher common-mode range for high-side monitoring.
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