Three-Wire True Zero-Speed Differential Peak-Detecting Sensor IC
A1469
Three-Wire True Zero-Speed Differential Peak-Detecting Sensor IC with Continuous Calibration
FEATURES AND BENEFIT...
Description
A1469
Three-Wire True Zero-Speed Differential Peak-Detecting Sensor IC with Continuous Calibration
FEATURES AND BENEFITS
Unique design for robustness against high-power EMC transients
Peak detection based switching algorithm for large operating air gaps
Minimum differential field 20 Gpk-pk Running mode calibration for continuous optimization Precise duty cycle signal throughout operating
temperature range Automatic Gain Control (AGC) for air-gap–independent
switchpoints Automatic Offset Adjustment (AOA) for signal
processing optimization True zero-speed operation Scan and IDDQ for increased test coverage
PACKAGE:
4-pin SIP (suffix K)
Not to scale
DESCRIPTION
TheA1469 is an optimized Hall-effect sensing IC that provides a user-friendly solution for digital ring-magnet sensing, or when coupled with a magnet, ferromagnetic target sensing, in three-wire applications. The small device package can be easily assembled into applications for use in conjunction with a wide variety of target shapes and sizes.
The integrated circuit incorporates dual Hall-effect elements with a 2.2 mm spacing and signal processing that switches in response to differential magnetic signals created by ringmagnet poles. The circuitry contains a sophisticated digital circuit to reduce system offsets, to calibrate the gain for airgap–independent switchpoints, and to achieve true zero-speed operation. Signal optimization occurs at power-on through the combination of offset and gain...
Similar Datasheet