IC FOR OPTO DETECTOR
FEATURES
•
2 Operation Modes (Proximity and
Barrier)
•
External Synchronisation in the
Barrier Mode
•
Ambient Light Rejection
•
Adjustable Threshold and Hysteresis
•
Normally Open and Normally Closed
Outputs
•
Driver for PNP Output Transistors
with Short Circuit Protection
•
LED Output 8 mA (Source and Sink)
•
Adjustable Detection Distance and
Hysteresis
•
Dirt Indication in the Barrier Mode
•
Internal Zener Diode for Voltage
Stabilisation (optional)
•
Maximum Supply Voltage only
Depending on External Elements
AM 336
GENERAL DESCRIPTION
The AM 336 is a bipolar monolithic integrated
circuit designed for optical detection applica-
tions.
By adding an external photodiode, an IR LED,
two PNP power transistors and a minimum of
other parts, the AM 336 will be a complete
optoelectronic interface (proximity and
barrier) for a reflective optical proximity
switch or for a light barrier with external
synchronisation.
APPLICATIONS
•
Miniaturised One Way Light Barrier
•
Miniaturised Reflection Light Barrier
•
Frame Light Barrier
BLOCK DIAGRAM
IRD
FO
P/B
oscillator
T
:128
T1
VCC
VZ
zener diode
T2
CSC
short circuit
pulse regulation
current regulation
SC
SC
L
H
H
H
LED
T1
L
T2
H
RS
:4
T1
IND
OUTA
ALR
INA
GND
SYNC
B
A
T2
B
X
L
H
H
amplifier
signal
detection
A
X
L
L
H
QC
output
driver
QO
LED
LED driver
RH
RD
Figure 1:
Block diagram of AM336
analog microelectronics
Analog Microelectronics GmbH
An der Fahrt 13, D – 55124 Mainz
Internet: www.analogmicro.de
Phone:
Fax:
Email:
+49 (0)6131/91 073 – 0
+49 (0)6131/91 073 – 30
info@analogmicro.de
February 2005
1/12
Rev. 1.1
AME [ ANALOG MICROELECTRONICS ]
