HALL-EFFECT

GEAR-TOOTH SENSORS

—AC COUPLED

The UGN/UGS3059KA and UGN/UGS3060KA ac-coupled Hall-

effect gear-tooth sensors are monolithic integrated circuits that switch

in response to changing differential magnetic fields created by moving

ferrous targets. These devices are ideal for use in non-zero-speed,

gear-tooth-based speed, position, and timing applications such as in

anti-lock braking systems, transmissions, and crankshafts.

Both devices, when coupled with a back-biasing magnet, can be

configured to turn ON or OFF with the leading or trailing edge of a

gear-tooth or slot. Changes in fields on the magnet face caused by a

moving ferrous mass are sensed by two integrated Hall transducers

and are differentially amplified by on-chip electronics. This differential

sensing design provides immunity to radial vibration within the devices’

operating air gaps. Steady-state magnet and system offsets are

eliminated using an on-chip differential band-pass filter. This filter also

provides relative immunity to interference from RF and electromag-

netic sources. The on-chip temperature compensation and Schmitt

trigger circuitry minimizes shifts in effective working air gaps and

switch points over temperature, allowing operation to low frequencies

over a wide range of air gaps and temperatures.

Each Hall-effect digital Integrated circuit includes a voltage regu-

lator, two quadratic Hall-effect sensing elements, temperature com-

pensating circuitry, a low-level amplifier, band-pass filter, Schmitt

trigger, and an open-collector output driver. The on-board regulator

permits operation with supply voltages of 4.5 to 24 volts. The output

stage can easily switch 20 mA over the full frequency response range

of the sensor and is compatible with bipolar and MOS logic circuits.

The two devices provide a choice of operating temperature

ranges. Both devices are packaged in a 5-pin plastic SIP.

HALL-EFFECT GEAR-TOOTH SENSORS

—AC COUPLED

Always order by complete part number, e.g., UGS3060KA .

ABSOLUTE MAXIMUM RATINGS

at T

Magnetic Flux Density, B ............ Unlimited

Package Power Dissipation,

Prefix ‘UGN’ ................. -20

Prefix ‘UGS’ ............... -40

Storage Temperature Range,

V

CC

1

4

3

2

5

X

X

Dwg. PH-011

FEATURES

s Senses Motion of Ferrous

Targets Such as Gears

s Wide Operating Temperature Range

s Operation to 30 kHz

s Resistant to RFI, EMI

s Large Effective Air Gap

s 4.5 V to 24 V Operation

s Output Compatible With

All Logic Families

s Reverse Battery Protection

s Resistant to Physical Stress

Pinning is shown viewed from branded side.

3060