EmbeddedRelated.com
The 2026 Embedded Online Conference
TMCS1108A4BQDR

TITMCS1108A4BQDR

Texas Instruments
Current Sensor 1 Channel Hall Effect Bidirectional 8-SOIC (0.154", 3.90mm Width)
NRND5,950 in stock

Overview

The TMCS1108A4BQDR is a high-precision, galvanically isolated Hall effect current sensor designed for AC and DC measurements with a 400mV/A sensitivity. It features a zero-drift internal reference and provides a ratiometric analog output proportional to the current flowing through the isolated conduction path. The device is rated for a robust 100-V functional isolation and operates over a 3V to 5.5V supply range.

Why Choose This Part

The TMCS1108A4BQDR offers excellent linearity of +/-0.5% and a low-drift architecture that maintains accuracy across a wide temperature range of -40C to 125C. Its 80kHz bandwidth and bidirectional sensing capability make it versatile for both high-speed switching power applications and general DC load monitoring.

Applications

Motor Phase Current Sensing
Monitoring current in H-bridge and three-phase motor drive systems for precise torque and speed control.
Power Factor Correction (PFC)
Tracking input current waveforms in switch-mode power supplies to improve efficiency and compliance.
Solar Inverters
Measuring DC string current and AC output current in photovoltaic power conversion systems.
Overcurrent Protection
Utilizing the 6.5us response time to detect fault conditions and protect downstream power electronics.

Key Specifications

Output Ratiometric, Voltage
Frequency 80kHz
Linearity +/-0.5%
Sensitivity 400mV/A
Sensor Type Hall Effect
Polarization Bidirectional
For Measuring AC/DC
Mounting Type Surface Mount
Response Time 6.5us
Package / Case 8-SOIC (0.154", 3.90mm Width)
Voltage - Supply 4.5V ~ 5.5V
Number of Channels 1
Operating Temperature -40degC ~ 125degC
Current - Supply (Max) 6mA

Getting Started

Engineers can evaluate this sensor by interfacing the analog output pin directly to an ADC input on a microcontroller like an MSP430 or C2000. Ensure the PCB layout includes adequate creepage and clearance for the 100-V isolation requirements, and use decoupling capacitors on the VDD pin as close to the 8-SOIC package as possible.

TMCS1108A4 Family

Part NumberDifferenceStock
TMCS1108A4BQDRQ1 Q1 10,608
The 2026 Embedded Online Conference