AM313 Datasheet, PDF (1/4 Pages) Analog Microelectronics – IC FOR PROXIMITY DETECTOR

IC FOR PROXIMITY DETECTOR
AM 313
GENERAL DESCRIPTION
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
• 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
14
CABT
5
7
VREF
2
RK
1
LC
16
RD
15
RH
Figure 1
Oscillator
Hysteresis
Power-On
Level
Voltage
Reference
Rectifier
Schmitt
Trigger
4
CGL
Power-On
Delay
Short-Circuit
Detection
Amplifier
Output
Stages
Drive
Current
LED
11
RM
10
Q
9
Q
8
RS
3
LED
6
GND
analog microelectronics
Analog Microelectronics GmbH
An der Fahrt 13, D – 55124 Mainz
Internet: www.analogmicro.de
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April 2005
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