CXD2724AQ-3 데이터 시트보기 (PDF) - Sony Semiconductor
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CXD2724AQ-3 Datasheet PDF : 65 Pages
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CXD2724AQ-3
Analog Characteristics
(AVD0 to 6 = VDD0 to 2 = AVDX = 5.0V, AVS0 to 6 = VSS0 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
In 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.
• VIN (L, R) = 300mVrms, VIN (C, S) = 212mVrms (= 0dB)
• fIN = 1kHz
Item
Measurement conditions
Channels Min. Typ. Max. Unit
S/N ratio∗1
CCIR/ARM filter
L, R
70 80
C, S
65 72
L, R
60
dB
10Hz to 500kHz
C
56
S
64
10Hz to 20kHz
VIN = 16.5dB∗2
10Hz to 20kHz
VIN = 0dB∗3
L, R
0.04 1.00
C, S
0.007 1.00
L, R
0.015
C, S
0.03
THD + N
10Hz to 20kHz
VIN = –3.52dB∗4
L, R
0.02
%
C, S
0.04
L, R
0.12
10Hz to 500kHz
C
0.18
S
0.04
Head room
Matrix rejection
10Hz to 20kHz, THD + N = 1%
∗5
16.5
dB
L, R
25 60
dB
C, S
25 40
Output level
Level difference between channels
(all)
250 280 310 Vrms
(all)
±0.2
dB
Current consumption
Analog system (including oscillator circuit)
Digital system
36
mA
91
Power supply rejection
ratio∗6
1mVrms, 100Hz sine wave
L, R
C, S∗7
3.9
dB
–13.2
∗1
∗2
∗3
∗4
∗5
∗6
When VIN = 200mVrms (= –3.52dB), the S/N ratio is 3.52dB smaller than the values noted in the table above.
VIN (L, R) = 2.0Vrms, VIN (C, S) = 1.414Vrms
VIN (L, R) = 300mVrms, VIN (C, S) = 212mVrms
VIN (L, R) = 200mVrms, VIN (C, S) = 141mVrms
When the L and R channel gain deviation is 0.1dB or less for the ADC front-end prefilter output.
Includes the amplification (L/Rch...5.27dB, C/Sch...13.72dB) of the external amplifier.
∗7 The trim volume is set to 0dB.
–8–
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