A1667LLTR-T

A1667 True Zero-Speed, High Accuracy, Ring Magnet Sensor IC FEATURES AND BENEFITS ▪ Optimized robustness to magnetic offset variation ▪ Small signal lockout for immunity against vibration ▪ Tight duty cycle and timing accuracy over full operating temperature range ▪ True zero-speed operation ▪ Air gap independent switch points ▪ Large operating air gaps achieved through use of gain adjust and offset adjust circuitry ▪ Defined power-on state (POS) ▪ Wide operating voltage range ▪ Digital output representing target profile ▪ Single chip sensing IC for high reliability ▪ Small mechanical size ▪ Fast startup ▪ Undervoltage lockout (UVLO) Packages: 8-Pin SOIC (suffix L) 4-Pin SIP (suffix K) Not to scale DESCRIPTION The A1667 is a true zero-speed ring magnet sensor integrated circuit (IC) consisting of an optimized Hall IC available in two package options that provides a user-friendly solution for digital ring magnet sensing applications. The sensor incorporates a dual element Hall IC that switches in response to differential magnetic signals created by a ring magnet. The IC contains a sophisticated compensating circuit designed to eliminate the detrimental effects of magnet and system offsets. Digital processing of the analog signal provides zero-speed performance independent of air gap and also dynamic adaptation of device performance to the typical operating conditions found in automotive applications (reduced vibration sensitivity). High-resolution peak detecting DACs are ...