AH337
Single Phase Hall Effect Switch

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.1.2 Mar. 29, 2006
1/8
„ Features

- 4.2V to 28V DC operation voltage
- Temperature compensation
- Wide operating voltage range
- Open drain pre-driver
- 25mA maximum sinking output current.
- Package: SIP3, SOT23


„ Applications

- VCD/DVD loader, CD/DVD ROM
- Cover detector
- Speed measurement
- Home appliances
- Home safety

„ General Description

AH337 is an switched Hall-Effect IC which is for
contactless switching applications. The device
includes an on-chip Hall voltage generator for
magnetic sensing, an amplifier that amplifies the
Hall voltage, a schmitt trigger to provide switching
hysteresis for noise rejection, and an open-drain
output. The bandgap regulator allows a wide
operating voltage range.
If a magnetic flux density larger than threshold Bop,
DO is turned on(low). The output state is held until
a magnetic flux density reversal falls below Brp
causing DO to be turned off (high).




„ Pin Assignment

337
1
2 : GND
3 : OUT
23
337
1
2
3
1 : Vdd
(Top view)
(SIP package)
(SOT23 package)


„ Pin Descriptions

Name P/I/O Pin # Description
Vdd P 1 Positive Power Supply
GND P 2 Ground
OUT O 3 Output Pin

„ Ordering Information

AH337 X - X X X
Packing
P: SIP3
W: SOT23
Package Lead
L : Lead Free
Wafer Body
Blank or
A~Z : if necessary
to specify
Spread-leg ammo pack for SIP-3L;
Blank : Bulk
A :
Tape & Reel for SOT23