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PDF CXA2568M Data sheet ( Hoja de datos )
| Número de pieza | CXA2568M | |
| Descripción | RF Amplifier for CD Players | |
| Fabricantes | Sony Corporation | |
| Logotipo |  |
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RF Amplifier for CD Players
CXA2568M
Description
The CXA2568M is an IC developed for compact
disc players. This IC incorporates an RF amplifier,
focus error amplifier, tracking error amplifier, APC
circuit and RF level control circuit. (The voltage-
converted optical pickup output is supported.)
24 pin SOP (Plastic)
Features
• Low power consumption (50 mW at ±2.5 V)
• High-band RF amplifier
• APC circuit
• RF level control circuit (Hold circuit included)
• Both single power supply and dual power supply
operations possible.
• Compatible with pickup for LC and PD
Applications
Compact disc players
Structure
Bipolar silicon monolithic IC
Absolute Maximum Ratings (Ta=25 °C)
• Supply voltage
VCC 12 V
• Operating temperature Topr –20 to +75 °C
• Storage temperature Tstg –65 to +150 °C
• Allowable power dissipation
PD 650 mW
Operating Conditions
Supply voltage
VCC—VEE 4.5 to 5.5
V
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by
any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the
operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
—1—
E97X12-TE
1 page  
Pin
Symbol
No.
IO
13 TE O
14 FE O
15 REF —
16 RFO O
Equivalent circuit
VCC
147
13
158.45k
400µ
VEE
VCC
10p
VEE
147
14
25p
174k
400µ
VEE
10p
VEE
25.4k
25µ
5.7k
15
5k
VCC
147
16
60k
25.4k
800µ
CXA2568M
Description
Output pin of tracking
error amplifier.
The F-E signal is
output.
Output pin of focus
error amplifier.
Equalizing pin of RF
amplifier.
Frequency response
can be adjusted by
connecting CR to this
pin.
Output pin of RF
amplifier.
17 RF_I
I
147
17
15k
—5—
20µ
Input pin of RF amplifier
output RFO with
capacitance coupled.
5 Page 
CXA2568M
Tracking Error Amplifier
Each signal current from the photodiodes E and F is I-V converted and input to Pins 10 and 11 via an input
resistor which determines the gain. The signal is amplified by the gain amplifier, operated by the tracking error
amplifier and then the (F-E) signal is output to Pin 13.
Pin 23 can be used as a bias for LC when connected to VCC and as a bias for PD IC when left open.
VC
F
I-V 10
150k
820k
E 820k
I-V 11
150k
VC
GND
260k
12p
260k
12p
26k
VC
13k 23.8k
158.45k
23.8k
TRACKING
ERROR AMP
26k VC
13k
158.45k
VC
LC/PD
23
TE
13
TEOUT
—11—
11 Page | ||
| Páginas | Total 17 Páginas | |
| PDF Descargar | [ Datasheet CXA2568M.PDF ] | |
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