CXA2596M View Datasheet(PDF) - Sony Semiconductor
Part Name
Description
Manufacturer
CXA2596M Datasheet PDF : 17 Pages
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CXA2596M
Center Voltage Generation Circuit
This circuit provides the center potential when this IC is used at single power supply. The maximum current
is approximately ±3 mA. The output impedance is approximately 147 Ω. Connect this circuit to GND when
used at dual power supply.
VCC
VCC
30k
30k
VEE
VC BUFFER
33µ/6.3V
VC
12
VC
147
33µ/6.3V
15k
VEE
Notes on Operation
1. Power supply
The CXA2596M can be used either at dual power supply or single power supply. The table below shows
the connection of power supply for each case.
Dual power supply
Single power supply
VCC
+power supply
Power supply
VEE
–power supply
GND
VC
GND
OPEN
2. Laser power control
The RF level is stabilized by attaching an offset to the APC VL and controlling the laser power in sync with
the RF level fluctuations. Therefore, use this circuit in the state where the focus servo is applied.
The laser life is shortened by increasing the laser power when the less light is reflected from the disc. It is
recommended that the typical laser power value is set lower to maintain the laser life.
The laser power limit value depends on the external circuit. Select the laser power limit setting considering
the external conditions.
Take care of the laser maximum ratings when using the laser power control circuit.
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