A1356LKB-T

• Product introduction

The A1356 device is a high precision programmable open drain with pulse-width modulated (PWM) outputHall-effect linear sensorsIC。 The duty cycle (D) of the PWM output signal is proportional to the applied magnetic field. The A1356 device converts analog signals to digitally encoded PWM output signals through its built-in Hall element. The coupled immunity of digitally encoded PWM outputs far exceeds the immunity of analog output signals.

The A1356 features a BiCMOS monolithic circuit that integrates a Hall element, high-precision temperature compensation circuitry to reduce the sensitivity and offset drift inherent in the Hall element, a small signal high-gain amplifier, a proprietary dynamic offset cancellation circuitry, and a PWM conversion circuit. Dynamic offset cancellation circuitry reduces the residual offset voltage of the Hall element. Hall element offsets are typically caused by molding setup, temperature dependencies, and thermal stress. High-frequency offset cancellation (chopping) clocks allow higher sample rates to improve the accuracy of the output signal and enable faster signal processing.

A1356sensorAvailable in a lead-free 3-pin single in-line package (KB suffix) with 100% matte tin leadframe plating.

• The PWM carrier frequency, quiescent duty cycle, and sensitivity are programmed simultaneously for system optimization
• Factory programmed sensitivity, temperature coefficient, and static duty cycle drift
• End-of-line programmability
• Pulse-width modulated (PWM) outputs provide higher noise immunity than analog outputs
• Precise recoverability after periodic temperature changes
• The output duty cycle clamp has short-circuit diagnostics
• A 50% duty cycle calibration test mode can be selected at unit start-up
• Wide operating temperature range: –40°C to 150°C
• Resistant to mechanical stress
• Advanced chopper stabilization circuitry and differential signal path design ensure very low output bias levels
• A proprietary on-chip filter provides extremely high output resolution
• Wide supply operating range: 4.5 to 18 V