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參數(shù)資料
| 型號： | CXD2724AQ-1 |
| 廠商： | Sony Corporation |
| 英文描述： | Single-Chip Dolby Pro Logic Surround Decoder |
| 中文描述： | 單片杜比定向邏輯環(huán)繞聲解碼器 |
| 文件頁數(shù)： | 8/65頁 |
| 文件大?。?/td> | 611K |
| 代理商： | CXD2724AQ-1 |
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– 8 –
CXD2724AQ-1
Analog Characteristics
(AVD0 to 6 = V
DD
0 to 2 = AVDX = 5.0V, AVS0 to 6 = V
SS
0 to 7 = AVSX = 0.0V, fs = 44.1kHz, Ta = 25°C)
When Pro Logic mode is on, the input signal level while measuring the center (C) and surround (S) channels
should be –3dB smaller than the input level while measuring the left (L) and right (R) channels. Note that the C
channel is input in-phase to the L channel, and the S channel is input at reversed phase to the R channel.
The input level is the same for all measurement items when Pro Logic mode is off.
1. ADC + DAC Connection Total Characteristics
I
n addition to the ADC and DAC, the total characteristics include the prefilter with built-in operational amplifier,
built-in post filter, and trim volume. Use the analog I/O circuits in the Application Circuit for the measurement
circuit.
1-1. When Pro Logic mode is on
Unless otherwise specified, the measurement conditions are as given below.
V
IN
(L, R) = 300mVrms, V
IN
(C, S) = 212mVrms (= 0dB)
f
IN
= 1kHz
1
When V
IN
= 200mVrms (= –3.52dB), the S/N ratio is 3.52dB smaller than the values noted in the table above.
2
V
IN
(L, R) = 2.0Vrms, V
IN
(C, S) = 1.414Vrms
3
V
IN
(L, R) = 300mVrms, V
IN
(C, S) = 212mVrms
4
V
IN
(L, R) = 200mVrms, V
IN
(C, S) = 141mVrms
5
When the L and R channel gain deviation is 0.1dB or less for the ADC front-end prefilter output.
6
Includes the amplification (L/Rch...5.27dB
, C/Sch...13.72d
B
) of the external amplifier.
7
The trim volume is set to 0dB.
L, R
C, S
L, R
C
S
L, R
C, S
L, R
C, S
L, R
C, S
L, R
C
S
L, R
C, S
(all)
(all)
L, R
C, S
7
70
65
25
25
250
80
72
60
56
64
0.04
0.007
0.015
0.03
0.02
0.04
0.12
0.18
0.04
16.5
60
40
280
±0.2
36
91
3.9
–13.2
1.00
1.00
310
dB
%
dB
dB
Vrms
dB
mA
dB
S/N ratio
1
THD + N
Head room
Matrix rejection
Output level
Level difference between channels
Current consumption
Power supply rejection
ratio
6
CCIR/ARM filter
10Hz to 500kHz
10Hz to 20kHz
V
IN
= 16.5dB
2
10Hz to 20kHz
V
IN
= 0dB
3
10Hz to 20kHz
V
IN
= –3.52dB
4
10Hz to 500kHz
10Hz to 20kHz, THD + N = 1%
5
Analog system (including oscillator circuit)
Digital system
1mVrms
, 100Hz sine wave
Channels
Min.
Typ.
Max.
Unit
Item
Measurement conditions
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