Texas Instruments Launches Zero‑Drift Hall‑Effect Current Sensors with Unmatched Accuracy

Texas Instruments (TI) has introduced the industry’s first zero‑drift Hall‑effect current sensors, the TMCS1100 and TMCS1101. These devices deliver 3 kVrms isolation, making them ideal for AC or DC high‑voltage applications such as industrial motor drives, solar inverters, energy‑storage systems, and power supplies.

In demanding industrial environments, the need for precise current measurement often forces designers to sacrifice board space or add complexity. TI’s new sensors keep the solution compact, reduce design time, and provide reliable performance and diagnostics throughout a device’s long service life.

Thanks to a zero‑drift architecture and real‑time sensitivity compensation, the TMCS1100 and TMCS1101 maintain high performance despite temperature shifts and equipment aging. The total sensitivity drift over temperature is only 0.45 % maximum—at least 200 % lower than other magnetic current sensors. Full‑scale offset drift is below 0.1 %, ensuring exceptional measurement accuracy across a broad current range.

Lifetime sensitivity drift is limited to 0.5 %, a 100 % improvement over competing magnetic sensors. Additional key specifications include: maximum accuracy of 1 % for the TMCS1100 and 1.5 % for the TMCS1101, eliminating the need for calibration; typical linearity of 0.05 %; and an extended industrial temperature range of –40 °C to 85 °C.

Available in 8‑pin SOIC packages, the TMCS1100 and TMCS1101 support a ±600 V lifetime working voltage—up to 40 % higher than comparable devices in the same package. Both sensors have been rigorously tested beyond standard UL and VDE requirements.

Pricing begins at $1.50 per unit in quantities of 1,000. Full and custom quantity reels are available on TI.com and through the distribution channel. The TMCS1100EVM and TMCS1101EVM evaluation modules retail for $59.00 each on TI.com.

>> This article was originally published on our sister site, Electronic Products.