AH175(2017) 查看數據表（PDF） - Diodes Incorporated.
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AH175 Datasheet PDF : 9 Pages
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NOT RECOMMENDED FOR NEW DESIGN
USE AH3774
AH175
HALL EFFECT LATCH FOR HIGH TEMPERATURE
Description
AH175 is a single-digital-output Hall-Effect latch 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,
an open-collector output pre-driver. An internal band-gap regulator
provides a temperature compensated supply voltage for internal
circuits and allows a wide operating supply range.
When the magnetic flux density (B) is larger than operate point (Bop),
output is switched on (OUT pin is pulled low). The output state is held
on until a magnetic flux density reversal falls below Brp. When B is
less than Brp, the output is switched off.
The AH175 is available in SIP-3 (Ammo Pack), SIP-3 (Bulk Pack) and
SC59 packages.
Features
• Bipolar Hall-Effect Latch Sensor
• 3.5V to 20V DC Operating Voltage
• Open Collector Pre-Driver
• 25mA Output Sink Current
• Built-in Power Reverse Protection
• Operating Temperature: -40ºC to +150ºC
• SIP-3 (Ammo Pack), SIP-3 (Bulk Pack) and SC59 Packages
(SC59 is Commonly Known as SOT23 in Asia)
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
Pin Assignments
(Front View)
SIP-3 (Bulk Pack)
3. OUT
2. GND
1. Vcc
(Top View)
GND 2.
SC59
3. OUT
1. Vcc
Applications
• Rotor Position Sensing
• Current Switch
• Encoder
• RPM Detection
Notes:
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green"
and Lead-free.
3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
<1000ppm antimony compounds.
Typical Applications Circuit
IA
IB
IC
Driver
Ia
&
Ib
Ic
Control Logic
HA
HB
HC
Hall Motor Driver
AH175
Document number: DS31043 Rev. 11 - 3
M
RPM sensing
Digital Hall Effect Sensor
M: Three Phase Hall Motor
3 Phase Hall Motor
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www.diodes.com
August 2017
© Diodes Incorporated
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