AMG-SO204 Datasheet, PDF (14/30 Pages) alpha microelectronics gmbh – Optical Switch IC

AMG-SO204
Optical Switch IC
9. Application
The figure below shows the general circuitry. The light line is between RX-Diode (see fig. 6)
and the TX-Diode (see fig. 7). The AMG-SO204 needs an external 20MHz clock to connect at
Pin INCLK (see fig. 8)
9.1. Example Application Circuit(s)
Supply
4.5...6.5V
3.3V /
20mA
100nF
VDD
100nF
CB3V3
100nF
VDDA
100nF
VREF
100nF
VDDD
IN
INCLK
EXTINP
RESIN
COMRXD
RF
AMG-SO204
REFEXT
100nF
CBGAIN
100nF
VGAOUT
220pF
GNDA
GNDD
Figure 5: Example Application Circuit
NPN
EXTCOVER
CPURXD
COMTXD
EXTOUT[1:0]
LIGHTOUT
CPUTXD
ROW[7:0]
SEG[7:0]
LIGHTCURRENT
AMG-SO204 Revision: A
29. Jul. 2010 © All rights reserved Page 14 of 30