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AH373

Anachip
Part Number AH373
Manufacturer Anachip
Description Internal Pull-up Hall Effect Latch
Published May 13, 2007
Detailed Description AH373 Internal Pull-up Hall Effect Latch „ Features - Bipolar Hall effect latch sensor - 2.2V to 20V DC operation voltag...
Datasheet PDF File AH373 PDF File

AH373
AH373

Overview
AH373 Internal Pull-up Hall Effect Latch „ Features - Bipolar Hall effect latch sensor - 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 „ 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.
„ Applications - Rotor position sensing - Current switch - Encoder - RPM detection „ Pin Assignment „ Pin Descriptions Name Description Positive Power Supply Ground Output Pin 373 2 373 1 3 VCC (Top view) 1 : VCC 2 : GND 3 : OUT GND OUT ( SOT23 package) 1 2 3 (SIP3 package) „ Ordering Information AH373 X - X X X Wafer Body Blank or A~Z : if necessary to specify Package P: SIP-3L W: SOT23-3L Lead L : Lead Free Blank: Normal Packing Blank : Tube or 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.
0.
0 Jan 31, 2005 1/6 AH373 Internal Pull-up Hall Effect Latch „ Block Diagram VCC 1 Regulator Hall plate Rpu 3 OUT 2 Amp 2 GND „ Functional Application Circuit IA IB M Digital Hall Effect Sensor M: Three Phase Hall Motor Driver & Control Logi...


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