cxa2571n Sony Electronics, cxa2571n Datasheet - Page 16

• Manufacturer Part Number: cxa2571n
• Description: Rf Matrix Amplifier
• Manufacturer: Sony Electronics

• RFDC
The signals input via the A, B, C and D pins are added, amplified and the RFDC signal is output.
RW/ROM switching and low-frequency gain adjustment are possible.
• Center Error
The signals input to the A and D pins and the B and C pins are arithmetically amplified and the center error
signal is output.
RW/ROM switching, low-frequency gain adjustment and offset adjustment are possible.
The bottom hold time constant can be adjusted by the CET (Pin 13) external resistance value.
A
D
B
C
6
9
7
8
RFDC = Gain (A + B + C + D)
Low-frequency gain
fc (Typ.)
The gain can be adjusted by the external resistance connected between Pins 29 and 30.
The output voltage offset can be adjusted by the R (OFST) resistance.
The (B + C) – (A + D) signal is arithmetically amplified.
Low-frequency gain
A
B
C
D
16k
16k
16k VC
16k
6
7
8
9
VC
32k
32k
8k
8k
ROM
RW
RW
ROM
15k
ROM: 20dB (17MHz)
RW: 32dB (5.5MHz)
ROM: 12MHz
RW: 5MHz
ROM: 14dB
RW: 26dB
VC
VC
10k
40k
V
V
CC
CC
40p
40p
ROM
RW
– 16 –
40k
40k
R (OFST)
RFDCI
1.5k
VC
30
5.1k
29
RFDCO
CEM
CEP
CET
CE
14
21
22
13
20k
200k
200k
DVC
CXA2571N