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APX9132G 데이터 시트보기 (PDF) - Anpec Electronics

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APX9132G
Anpec
Anpec Electronics Anpec
APX9132G Datasheet PDF : 14 Pages
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APX9132G
Function Description
Operation
The output of APX9132G switches low (turn-on) when in
presence of strong flux density facing the marked side of
package exceeds the operate point BOPS (or is less than
BOPN). After turn-on, the output is capable of sinking up to
1mA and the output voltage is low (turn-on). In absence of
flux density below the release point B (or increased
RPS
above B ), the APX9132G output switches high (turns
RPN
off). After turn-off, the output is capable of sourcing up to
1mA and the output voltage is high (turn-off). The dif-
ference in the magnetic operated and released point is
the hysteresis (Bhys) of the device. This built-in hyster-
esis allows clean switching of the output even in the pres-
ence of external mechanical bouncing vibration and elec-
trical noise.
Awake & Sleep
Internal awake & sleep timing block circuit activates the
sensor for 180µs and deactivates it for the remainder of
the period (60ms). A short “awake” time allows for stabi-
lization prior to the sensor sampling and data latching on
the falling edge of the timing pulse. While in sleep cycle,
the output is latched in its previous state.
Chopper Stabilized Technique
The chopper stabilized technique cancels the mismatch-
ing of the hall element, the amplifier offset voltage and
temperature sensitive drift by the dynamic offset cancel-
lation and switched capacitor technique. This technique
produces devices have an extremely stable Hall output
voltage, therefore, the magnetic switch points are stable.
5V
MAX
OUTPUT OFF
BOPN
BOPS
BRPN
BRPS OUTPUT ON
0
-B
0
+B
MAGNETIC FLUX
Pole-independent
The pole-independent sensing technique allows for
operation with either a north or south pole magnet
orientation, enhancing the manufacturability of the device.
The state-of-the-art technology provides the same output
polarity for either pole in presence.
Copyright © ANPEC Electronics Corp.
7
Rev. A.1 - Oct., 2009
www.anpec.com.tw

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