A1699
Two-Wire, Differential, Vibration-Resistant
Sensor IC with Speed and Direction Output
FEATURES AND BENEFITS
DESCRIPTION
• 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
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.
TheICemployspatentedalgorithmsforthespecialoperational
requirements of automotive transmission applications. The
speed and direction of the target are communicated through a
variablepulse-widthoutputprotocol.TheA1699isparticularly
adept at handling vibration without sacrificing maximum air
gapcapabilityorcreatinganyerroneousdirectioninformation.
Theadvancedvibrationdetectionalgorithmwillsystematically
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.
□ 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
Advanced signal processing and innovative algorithms make
the A1699 an ideal solution for a wide range of speed- and
direction-sensing needs.
Package: 2-Pin SIP (Suffix UB)
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)
Offset
Adjust
Hall Amp
AGC
Filter
ADC
Synchronous
Digital Controller
Output
Control
Offset
Adjust
Hall Amp
AGC
Filter
ADC
GND
Functional Block Diagram
April 3, 2019
A1699-DS, Rev. 8
MCO-0000636