Product Summary

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 A1642 incorporates dual Hall Effect elements and signal processing that switches in response to differential magnetic signals created by ring magnet poles. The A1642 contains a sophisticated digital circuit to reduce system offsets, to calibrate the gain for air-gap–independent switch points, and to achieve true zero-speed operation. Signal optimization occurs at power-on through the combination of offset and gain adjusts 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.

Parametrics

A1642 absolute maximum ratings: (1)Supply Voltage VCC: 28 V; (2)Reverse Supply Voltage VRCC: –18 V; (3)Operating Ambient Temperature TA Range L: –40 to 150℃; (4)Maximum Junction Temperature TJ(max): 165℃; (5)Storage Temperature Tstg: –65 to 170℃.

Features

A1642 features: (1)Running mode calibration for continuous optimization; (2)Single chip IC for high reliability; (3)Internal current regulator for 2-wire operation; (4)Precise duty cycle signal over operating temperature range; (5)Large operating air gaps; (6)Automatic Gain Control (AGC) for air gap independent switchpoints; (7)Automatic Offset Adjustment (AOA) for signal processing optimization; (8)True zero-speed operation; (9)Undervoltage lockout; (10)Wide operating voltage range; (11)Wide-lead package suitable for welding external; (12)components directly to the package leads or for welding the device to a leadframe.

Diagrams

A1642 block diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
A16425-0009
A16425-0009

Anderson Power Products

Heavy Duty Power Connectors A16 DINW/ 25MMPINCON 25MMPINCON

Data Sheet

0-1: $20.16
1-25: $18.15
25-50: $16.43
50-100: $15.56
A1642-I1
A1642-I1

Other


Data Sheet

Negotiable 
A1642-I2
A1642-I2

Other


Data Sheet

Negotiable 
A1642LK
A1642LK

Other


Data Sheet

Negotiable 
A1642LKNTN-I2-T
A1642LKNTN-I2-T


IC SENSOR HALL EFFECT OPT 4-SIP

Data Sheet

0-12000: $1.03
A1642LKNTN-I1-T
A1642LKNTN-I1-T


IC SENSOR HALL EFFECT OPT 4-SIP

Data Sheet

0-12000: $1.03
A1642LK-I2-T
A1642LK-I2-T


IC SENSOR HALL EFFECT OPT 4-SIP

Data Sheet

0-4000: $1.09
A1642LK-I1-T
A1642LK-I1-T


IC SENSOR HALL EFFECT OPT 4-SIP

Data Sheet

0-4000: $1.09