A1699 Datasheet, PDF (1/18 Pages) Allegro MicroSystems – Two-Wire, Differential, Vibration-Resistant Sensor IC with Speed and Direction Output

A1699
Two-Wire, Differential, Vibration-Resistant
Sensor IC with Speed and Direction Output
FEATURES AND BENEFITS
• Integrated IC and capacitor, single overmolded package
to reduce external EMI-protection requirements
• Two-wire, pulse-width output protocol
• Highly configurable output protocol options
• Digital output representing target profile
• Speed and direction information of target
• Vibration tolerance
□□Small-signal lockout for small amplitude vibration
□□Proprietary vibration detection algorithms for large
amplitude vibration
• Air-gap-independent switchpoints
• Large operating air gap capability
• Undervoltage lockout
• True zero-speed operation
• Wide operating voltage range
• AEC-Q100 automotive qualified
• Robust test-coverage capability with Scan Path and
IDDQ measurement
Package: 2-Pin SIP (Suffix UB)
DESCRIPTION
The A1699 is an optimized Hall-effect integrated circuit (IC)
that provides a user-friendly solution for direction detection
and true zero-speed, digital ring-magnet sensing. The small
package can be easily assembled and used in conjunction with
a wide variety of target sensing applications.
The IC employs patented algorithms for the special operational
requirements of automotive transmission applications. The
speed and direction of the target are communicated through a
variable pulse-width output protocol. TheA1699 is particularly
adept at handling vibration without sacrificing maximum air
gap capability or creating any erroneous direction information.
The advanced vibration detection algorithm will systematically
calibrate the sensor IC on the initial magnetic poles of true
target rotation and not on vibration, always guaranteeing an
accurate signal in running mode.
Advanced signal processing and innovative algorithms make
the A1699 an ideal solution for a wide range of speed- and
direction-sensing needs.
The A1699 is provided in a 2-pin miniature SIP package
(suffix UB) that is lead (Pb) free, with tin leadframe plating.
The UB package includes an IC and capacitor integrated into a
single overmolded package to reduce external EMI protection
requirements.
Not to scale
VCC
Regulator
(Analog)
Regulator
(Digital)
Hall Amp
Offset
Adjust
AGC
Filter
ADC
Hall Amp
Offset
Adjust
AGC
Filter
ADC
Synchronous
Digital Controller
Output
Control
A1699-DS, Rev. 7
Functional Block Diagram
GND