AH373
Internal Pull-up Hall Effect Latch
Features
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.
- 2.2V to 20V DC operation voltage
- Built-in pull-up resistor
- 25mA output sink current
- Operating temperature: −40°C ~ +125°C
- Package: SIP3, SOT23
Applications
- Rotor position sensing
- Current switch
- Encoder
- RPM detection
Pin Assignment
Pin Descriptions
Name
Description
Vdd
373
373
Ground
OUT
(Top view)
Positive Power Supply
GND
2
Output Pin
1 : Vdd
1
3
2 : GND
( SOT23 package)
3 : OUT
1 2 3
(SIP3 package)
Ordering Information
AH373 X - X X X
Wafer Body
Blank or
A~Z : if necessary
to specify
Package
P: SIP3
W: SOT23
Lead
L : Lead Free
Packing
Blank : Bulk
A : Tape & Reel
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.1.1 Jan. 09, 2006
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