Two-Wire True Zero-Speed Miniature Differential Peak-Detecting Sensor With Continuous Calibration

The A1642 is an optimized Hall effect sensing integrated circuit that provides a user-friendly solution for true zero-speed digital ring-magnet sensing in two-wire applications. This small package CAN be easily assembled and used in conjunction with a wide variety of target shapes and sizes.
The integrated circuit incorporates a dual-element Hall Effect Sensor and signal processing that switches in response to differential magnetic signals created by ring magnet poles. The circuitry contains a sophisticated digital circuit to reduce system offsets, to calibrate the gain for air-gapindependent switchpoints, and to achieve true zero-speed operation. Signal optimization occurs at power-on through the combination of offset and gain adjust and is maintained throughout the operating time with the use of a running-mode calibration. The running-mode calibration allows immunity to environmental effects such as micro-oscillations of the target or sudden air gap changes.
By Allegro MicroSystems, Inc.
Part Manufacturer Description Datasheet Samples
OPA1642AQDGKRQ1 Texas Instruments Automotive SoundPlus™ High-Performance, JFET-Input Audio Op Amps 8-VSSOP -40 to 125
OPA1642AIDR Texas Instruments Sound-Plus High-Performance, JFET-Input Audio OpAmps 8-SOIC -40 to 85
74AVCA164245VRE4 Texas Instruments 16-Bit Dual-Supply Bus Transceive W/Configurable Voltage Translation and 3-State 48-TVSOP -40 to 85
74AVCA164245VRG4 Texas Instruments AVC SERIES, DUAL 8-BIT TRANSCEIVER, TRUE OUTPUT, PDSO48, GREEN, PLASTIC, TVSOP-48
OPA1642AIDGKR Texas Instruments Sound-Plus High-Performance, JFET-Input Audio OpAmps 8-VSSOP -40 to 85
SN74AVCA164245VR Texas Instruments 16-Bit Dual-Supply Bus Transceive W/Configurable Voltage Translation and 3-State 48-TVSOP -40 to 85
OPA1642AID Texas Instruments Sound-Plus High-Performance, JFET-Input Audio OpAmps 8-SOIC -40 to 85
74AVCA164245GRG4 Texas Instruments 16-Bit Dual-Supply Bus Transceive W/Configurable Voltage Translation and 3-State 48-TSSOP -40 to 85
74AVCA164245GRE4 Texas Instruments 16-Bit Dual-Supply Bus Transceive W/Configurable Voltage Translation and 3-State 48-TSSOP -40 to 85
74AVCA164245ZQLR Texas Instruments 16-Bit Dual-Supply Bus Transceive W/Configurable Voltage Translation and 3-State 56-BGA MICROSTAR JUNIOR -40 to 85
A1642 's PackagesA1642 's pdf datasheet



A1642 Pinout, Pinouts
A1642 pinout,Pin out
This is one package pinout of A1642,If you need more pinouts please download A1642's pdf datasheet.

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