SENSORS

Delphi Digital Speed and Position Sensors
Delphi Digital Speed and Position Sensors are based on integrated
adaptive threshold Hall effect technology. They sense the speed
and position of a target created with various sense features that are
machined, stamped, drawn, or magnetically encoded. They can
sense speeds as low as zero RPM.
Delphi offers Digital Speed and Position Sensors with three-wire
voltage, or two-wire current square wave output signal interfaces.
Most of Delphi's Digital Speed and Position Sensors employ
adaptive threshold sensing schemes that improve sensor
performance and reduce the sensitivity of the sensor mounting
location relative to the target.
Delphi's Digital Speed and Position Sensors are available in low
(transmission speed), medium (crankshaft position and speed), and
high (crankshaft position and speed) switch point accuracy models.
The sensors operate with a regulated five volt power supply and/or
conditioned 12 volt supply. All can be packaged to meet individual
customer requirements.

Delphi Digital Speed and Position Sensors
shown in two configurations.

Benefits
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Modular design based on proven features and assembly processes provides rapid application optimization with
flexible package geometry and high reliability
Three-wire open collector output, open drain output, or two-wire current output allow flexible controller design
Accurate square wave output eliminates square-up function in the controller
Transient protection helps protect against stray electro-magnetic fields interface
Various mounting applications provide choice of many existing designs, or custom designs
Adaptive Hall signal schemes provide improved timing accuracy, optimized sensor air gap and tilt sensitivity, and zero
speed sensing capability
Single element option offers simplified design, and valid power on state (VPOS) for camshaft applications to minimize
engine synchronization timing
Dual element differential option offers extremely accurate gear edge detection, peak detector circuitry that is immune
to tilt or off-center failure mode, and gain-adjust circuitry that reduces the effect of minor gear anomalies
Enhanced sensing capability helps reduce emissions and improve reliability and drivability

Typical Applications
Delphi Digital Speed and Position Sensors are designed for use with virtually any automotive control
module that will accept a digital input. Typical automotive applications include engine (cam and crank:
speed and position) and transmission (input and output speed).
Because they are designed for demanding applications, Delphi Digital Speed and Position Sensors are
also well-suited for a wide range of non-automotive product applications.

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