|
|
Part: CXA1821M
Category:
Multimedia
-> Audio
-> Processors
-> CD Signal Processor
Description: RF Amplifier For CD Players
Company: Sony Electronics
Datasheet: Download CXA1821M datasheet File size : 269 kB
Request For quote: Find where to buy CXA1821M
Datasheet text preview:
CXA1821M
RF Amplifier for CD Players
Description The CXA1821M is an IC developed for compact disc players. This IC incorporates an APC circuit and RF, focus error, and tracking error amplifiers for 3spot optical pickup output. (The voltage-converted optical pickup output is supported.) Features · Low power consumption (40 mW at ±2.5 V ) · APC circuit · Both single power supply (+5 V) and dual power supply (±2.5 V) operations possible. · Compatible with pickup for LC and PD · Supports the RF amplifier at double speed. Applications Compact disc players Structure Bipolar silicon monolithic IC Block Diagram and Pin Configuration
FE BIAS LD ON LC/PD RFO RFE
20 pin SOP (Plastic)
Absolute Maximum Ratings (Ta=25°C) · Supply voltage VCC 12 · Operating temperature Topr 20 to +75 · Storage temperature Tstg 65 to +150 · Allowable power dissipation PD 600 Operating Conditions · Supply voltage VCC VEE
V °C °C mW
2.8 to 11.0
V
VCC
20
19
18
17
16
15
14
13
12
TRACKING ERROR AMP VC
FOCUS ERROR AMP
APC LD AMP
RF EQ AMP 5.6k 10k
VC VC BUFFER
123k
147 VC EI 10 260k 12p VEE 15k
VC 25p
56k
174k
VC 23.8k
23.8k
VC RF SUMMING AMP
VCC
56k
10k
10k
1k
VREF
1.25V
VEE
28k
26k
820k
VEE
260k
24k
30k
24k
30k
24k
30k
24k
1
2
3
4
5
6
30k
VC
7
F
8
LD
PD
A
B
C
D
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
E94932A1Y-TE
VEE
E
9
820k
55k
12p
13k
VC
11
EO
30k
30k
VC
FE
TE
123k
VEE
164k 25p 87k 22k 10k VCC
VCC
CXA1821M
Pin Description Pin No. Symbol I/O Equivalent circuit Description
VCC VCC 10k 1k 55.7k
1
LD
O
1
Output pin of APC amplifier.
VEE
VCC
17µ 55k
2
PD
I
147
2
10k
Input pin of APC amplifier.
VEE VEE
VEE VEE
VCC 24k 30k
VCC
VCC VCC
A3
25p 28k 174k
3 4 5 6 14
A B C D FE BIAS
I I I I I
B4
24k 30k
4.9k C5 24k 30k 24k 30k VEE VEE 164k 100µ 8µ
87k 25p
Input pin of RF and FE amplifier for Pins 3, 4, 5 and 6; focus bias adjustment for Pin 14.
D6
VC
VC 14 FE BIAS
7
VEE
--
VEE.
2
CXA1821M
Pin No. Symbol
I/O
Equivalent circuit
VCC VCC VCC VCC
Description Input pin of tracking error amplifier for Pins 8 and 9. An external resistor for V-I conversion should be connected because these pins are for current input. Gain adjustment of input signal from Pin 9 for Pins 10 and 11. Pin 18 is a bias for LC when connected to VCC and for PD IC when left open. DC voltage output pin of (VCC+VEE)/2. Connect to GND when dual power supply (±2.5 V) is used; connect a smoothing capacitor when single power supply (+5 V) is used.
VCC VCC
12p 12p 147 11
8 9 10 11 18
F E EI EO LC/PD
I I -- -- I
147
260k
8
820k 18 820k 147 96.3k 8µ VEE VC 96.3k 23.8k 8µ VEE VC 8µ 260k 10 300µ
9
VCC
VCC 200µ
120
12
VC
O
147 12 120
15k
16k
VEE VCC
13
TE
O
147 13
123k
Output pin of tracking error amplifier. The F-E signal is output.
400µ VEE
10p VEE
3
CXA1821M
Pin No. Symbol
I/O
Equivalent circuit
VCC
Description
25p
15
FE
O
147 15
174k
Output pin of focus error amplifier.
10p 400µ VEE VEE VCC
147
22k
16
RFO
O
16
Output pin of RF amplifier.
VEE
22k
5.6k 17
17
RFE
--
10k 200µ
7.3k
Equalizing pin is used of RF amplifier. Frequency response can be adjusted by connecting CR to this pin.
VC
VEE
VCC 50µ 147 19
19
LD ON
I
VREF
ON/OFF selection pin of APC amplifier. ON for VCC and OFF for VEE
30k
VEE VEE VEE VEE
20
VCC
--
VCC.
4
Electrical Characteristics
SW conditions and measurement method -- 11.0
Output DC measurement
Power supply ±2.5 V (VCC=2.5 V, VEE=2.5 V, VC=GND)
Bias conditions Min. Typ. Max. Unit Description of I/O waveform
Measurement item 123456789 ICC 20 Input GND 7 Input GND 25.0 19.2 1.3 -- 30.0 18.3 18.3 3.0
Output DC measurement Output DC measurement Output DC measurement
Symbol E1 7.23 7.23 -- 22.1 -- -- 0 21.2 21.2 0 -- 1.9 30 19.8 19.8 3.0 13 V13-4=V13-2V13-3 270mV 270mV 2.0V 2.0V 2.0V 0.5V +69mV 13 13 1 +123mV 1 +177mV 1 +0mV 2.0V +0mV 1 1 LD OFF I1=0.8mA
Output DC measurement Output DC measurement Output DC measurement Output DC measurement Output DC measurement Output DC measurement Output DC measurement
Measurement No.
1 IEE V16-1 16 Input GND 16 Input 1kHz 100 mVp-p Output AC measurement 280mV 280mV 15 Input GND 16
Output DC measurement Output DC measurement
Measurement pin
E2 11.0
E3
Current consumption -- 25.0 25.2 --
mA mV dB V 0.3 30.0 24.3 24.3 3.0 1.9 V 310mV 13 Input GND 15 -- 0 22.7 22.7 0 1.9 -- -- 1.5 0.6 2.1 -- -- -- 1.7 0.0 2.0 2.3 -- 30 25.8 25.8 3.0 -- 1.9 0.3 1.1 -- -- 0.0 V dB mV dB mV
2
3 V16-2 V16-3 16 V16-4 V15-1 V15-2 V15-3 V15-4 15 V15-4=V15-2V15-3 310mV 15 V15-5 V15-6 V13-1 V13-2 V13-3 V13-4 V13-5 V13-6 V1-1 V1-2 V1-3 V1-4 V1-5
Output DC measurement
Offset voltage 1
5
Voltage gain
7
RF amplifier
6
Maximum output amplitude H
Maximum output amplitude L
8
Offset voltage
° °
15 Input 1kHz 260 mVp-p Output AC measurement 15 Input 1kHz 260 mVp-p Output AC measurement
9
Voltage gain 1
10
Voltage gain 2
12
FE amplifier
11
Voltage gain difference
Maximum output amplitude L
18
TE amplifier
23
APC
Center amplifier
5
13
Maximum output amplitude H
14
Offset voltage
°°°° °°°° °°°° °° °° °° °° ° ° ° ° °° °°
13 Input 1kHz 140 mVp-p Output AC measurement 13 Input 1kHz 140 mVp-p Output AC measurement
15
Voltage gain 1
16
Voltage gain 2
17
Voltage gain difference
Maximum output amplitude H
19
Maximum output amplitude L
20
Output voltage 1
21
Output voltage 2
22
Output voltage 3
Output voltage 4
24
Maximum output amplitude
°
25 V12-1
Output voltage 1
12
Output DC measurement
100
--
+100
mV
CXA1821M
*
° in the SW conditions represents the ON state.
Others parts begin by cx
CX-1 CX-2 CX-3 CX-4 CX-5 CX-6 CX-7 CX-8 CX-9 CX-10 CX-11 CX-12 CX-13 CX-14 CX-15 CX-16
|
|
|
