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AM313 数据表(PDF) 3 Page - Analog Microelectronics

部件名 AM313
功能描述  IC FOR PROXIMITY DETECTOR
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制造商  AME [Analog Microelectronics]
网页  http://www.ame.com.tw/
标志 AME - Analog Microelectronics

AM313 数据表(HTML) 3 Page - Analog Microelectronics

  AM313 Datasheet HTML 1Page - Analog Microelectronics AM313 Datasheet HTML 2Page - Analog Microelectronics AM313 Datasheet HTML 3Page - Analog Microelectronics AM313 Datasheet HTML 4Page - Analog Microelectronics  
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IC FOR PROXIMITY DETECTOR
AM 313
analog microelectronics
April 2005
3/4
ABSOLUTE MAXIMUM RATINGS
Supply Voltage VCC
35V
Output Voltage UQ
32V
Output Current IQL
20mA
Junction Temperature TJ
150°C
Power Dissipation at Tamb = 25°C
PD = 600mW
Derate for Tamb > 25°C
1/RΘ = 5mW/°C
Storage Temperature Range Tst
– 55...125°C
Operating Temperature Range Tamb
– 25...85°C (VCC = 15V to 35V)
Tamb
– 20...85°C (VCC = 4.75V to 35V)
FUNCTIONAL DESCRIPTION
The proximity detection is based on the amplitude attenuation of an LC–oscillator which depends
on the distance to a metal object.
The signal from the oscillator is rectified and filtered, then detected by a Schmitt–Trigger which
switches the outputs Q (for close switch operation) and Q (for open switch operation).
An additional LED output shows the on-state of the detection. The LED is blanked in the case of
short circuit. To protect the circuit from overload, the outputs are disconnected and retested
periodically. The limitation of the output current is set by the resistor Rm.
The temperature compensation to adapt the oscillator voltage to different types of external LC
resonators is performed by connecting a resistor between pins 7 (VREF) and 2 (RK).
The circuit has a power–on–delay which is adjusted with CABT. Within this delay, the outputs Q
and Q are set to high level.
FUNCTIONAL DIAGRAMS
AM313
1
2
3
4
5
6
7
8
9
10
11
14
15
16
VREF
VCC
LED
R
m
Z
2
Q
Q
T
Z
1
D
2
C
R
D
1
V
CC
Output
Ground
R
S
R
D
R
H
R
K
C
OSC
L
Figure 2


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