AH175
Hall Effect Latch For High Temperature


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. 0.7 May 7, 2004
1/6

„ Features

- Bipolar Hall effect latch sensor
- 3.5V to 20V DC operation voltage
- Open collector pre-driver
- 25mA output sink current
- Chip power reverse-connection protection
- Operating temperature: C125~C40 °+°−
- Package: SIP3, SOT23


„ Applications

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


„ Pin Assignment

(SIP3 package)
( SOT23 package)
1. VCC
2. GND
3.
OUT
1. VCC
3.
GND 2.
OUT
(Top view)

„ General Description

AH175 is a single-digital-output Hall-effect sensor
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 open-collector output pre-driver.
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
threshold Bop, the OUT pin turns on (low). If B
removed toward 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 Input power
GND Ground
OUT Output stage


„ Ordering Information

AH175 X -XX X -X
Packing
Blank : Tube
A : Taping
P: SIP3
W: SOT23
Package Lead
L : Lead Free
Blank: Normal
Wafer Body
Magnetic
Characteristics
Blank or
A~Z : if necessary
to specify
A or B