A1357 Description
The A1357 device is a high precision, programmable two-wire Hall-effect linear sensor IC with a pulse width modulated (PWM) current. The A1357 device converts an analog signal from its internal Hall sensor element to a digitally encoded PWM signal. The coupled noise immunity of the digitally encoded PWM is far superior to the noise immunity of an analog output signal.
A1357 Key Features
- Two-wire output enables reduced wiring costs in long wire systems
- Simultaneous programming of PWM carrier frequency, quiescent duty cycle (QDC), and sensitivity for system optimization
- Fully differential signal path increases EMC immunity and reduces output offset drifts
- Factory-programmed sensitivity temperature coefficient and quiescent duty cycle drift
- Programmability at end-of-line
- Pulse width modulated (PWM) current output provides
- Precise recoverability after temperature cycling
- Duty cycle clamps provide short circuit diagnostic capabilities
- Optional 50% duty cycle calibration test mode at device power up
- Wide ambient temperature range: -40°C to 150°C