80ARMS 500kHz Hall-effect current sensor with AFR, reference and ALERT

The TMCS1126 is a galvanically

isolated Hall-effect current sensor with industry leading isolation and accuracy. An output

voltage proportional to the input current is provided with excellent linearity and low drift

at all sensitivity options. Precision signal conditioning circuitry with built-in drift

compensation is capable of less than 1.4%

maximum sensitivity error over temperature

1.4%and lifetime with no system

level calibration, or less than 0.9% maximum sensitivity error including both lifetime and temperature drift

with a one-time calibration at room temperature.

AC or DC input current flows through an internal

conductor generating a magnetic field measured by integrated, on-chip, Hall-effect sensors.

Core-less construction eliminates the need for magnetic concentrators. Differential Hall

sensors reject interference from stray external magnetic fields. Low conductor resistance

increases measurable current ranges up to ±120A while minimizing power loss and easing thermal dissipation requirements.

Insulation capable of withstanding 5kVRMS, coupled with a minimum of 8mm creepage

and clearance, provides high levels of reliable lifetime reinforced working voltage.

Integrated shielding enables excellent common-mode rejection and transient immunity. Fixed

sensitivity allows the device to operate from a single 3V to 5.5V power supply, eliminating

ratiometry errors and improving supply noise rejection. TI provides Grade B options at

lower-cost.