AH373
Internal Pull-up Hall Effect Latch


This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of
this product. No rights under any patent accompany the sale of the product.
Rev. 0.0 Jan 31, 2005
1/6
„ Features

- Bipolar Hall effect latch sensor
- 2.2V to 20V DC operation voltage
- Built-in pull-up resistor
- 25mA output sink current
- Operating temperature: C125~C40 °+°−
- Package: SIP3, SOT23

„ Applications

- Rotor position sensing
- Current switch
- Encoder
- RPM detection





„ Pin Assignment

373
1
2 : GND
3 : OUT
23
373
1
2
3
1 : VCC
(Top view)
(SIP3 package)
( SOT23 package)

„ General Description

AH373 is a single-digital-output Hall-effect sensor
with pull-up resistor for high temperature operation.
The device includes an on-chip Hall voltage
generator for magnetic sensing, an amplifier to
amplify Hall voltage, and a comparator to provide
switching hysteresis for noise rejection, and an
output driver with a pull-up resistor (Rpu). An
internal bandgap regulator is used to provide
temperature compensated supply voltage for
internal circuits and allows a wide operating supply
range. While the magnetic flux density (B) is larger
than operate point (Bop), the OUT pin turns on
(low). If B moves toward release point (Brp), the
OUT pin is latched “on” state prior to B < Brp. When
B < Brp, the OUT pin go into “ off ” state.

„ Pin Descriptions


Name Description
VCC Positive Power Supply
GND Ground
OUT Output Pin

„ Ordering Information
AH373 X - X X X
Packing
Blank : Tube or Bulk
A : Tape & Reel
P: SIP-3L
W: SOT23-3L
Package Lead
L : Lead Free
Blank: Normal
Wafer Body
Blank or
A~Z : if necessary
to specify