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TDA1302T View Datasheet(PDF) - Philips Electronics

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TDA1302T Datasheet PDF : 18 Pages
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TDA1302_1 13 Wed Sep 14 13:30:56 1994
Philips Semiconductors
Data amplifier and laser supply circuit for
CD player and read only optical systems
Preliminary specification
TDA1302T
APPLICATION INFORMATION
The TDA 1302T is optimized for Philips CDM12
mechanisms and, subsequently, this application is
preferred.
Application with Philips CDM12
The CDM12 mechanism uses an N sub-laser diode
together with a P sub-monitor diode and, since TDA1302T
is optimized for this type, besides the standard
components CL and RADJ, no other external components
are required as illustrated in Fig.9.
As two central spot diodes are summed together inside the
pick-up unit, one input pin remains unused as shown in
Fig.10. Unused central spot inputs should be connected to
ground in order to eliminate noise contribution to the RF
and RFE signals.
Fig.9 Application of the CDM12 laser/monitor diode unit.
September 1994
Fig.10 Application of the CDM12 pick-up unit.
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