IC FOR PROXIMITY DETECTOR
GENERAL DESCRIPTION
AM 313
The AM 313 is a bipolar monolithic Integrated Circuit designed for proximity detection appli-
cations. The function is based on the damping of an LC oscillator which switches a transistor and
LED output.
FEATURES
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Wide Supply Voltage Range from 4.75 to 35V
Supply Current Without Oscillator typical 1mA
Complementary Outputs with Short–Circuit Protection
P–Type Drivers for PNP Bipolar and PMOS Transistors
Adjustable Output Current From 100µA to 12mA
Adjustable Detection Distance and Hysteresis
Adjustable Temperature Compensation for Detection Distance
Protection against False Polarity
Power–On–Delay
LED Output 4mA typical
BLOCK DIAGRAM
VCC
CABT
14
Power-On
Level
5
VREF
RK
LC
RD
RH
7
2
1
16
15
Hysteresis
Oscillator
Voltage
Reference
Power-On
Delay
Short-Circuit
Detection
11
10
9
8
RM
Q
Q
RS
Rectifier
Schmitt
Trigger
Amplifier
Output
Stages
Drive
Current
LED
4
Figure 1
CGL
3
LED
6
GND
analog microelectronics
Analog Microelectronics GmbH
An der Fahrt 13, D – 55124 Mainz
Internet: www.analogmicro.de
Phone: +49 (0)6131/91 073 – 0
Fax:
+49 (0)6131/91 073 – 30
E–Mail: info@analogmicro.de
April 2005
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AME [ ANALOG MICROELECTRONICS ]
