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CXD2724AQ-1 Datasheet(PDF) 9 Page - Sony Corporation

Part No. CXD2724AQ-1
Description  Single-Chip Dolby Pro Logic Surround Decoder
Download  65 Pages
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Manufacturer  SONY [Sony Corporation]
Direct Link  http://www.sony.co.jp
Logo SONY - Sony Corporation

CXD2724AQ-1 Datasheet(HTML) 9 Page - Sony Corporation

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CXD2724AQ-1
1-2. When Pro Logic mode is off
Unless otherwise specified, the measurement conditions are as given below.
• VIN (L, R, C, S) = 2.0Vrms (= 0dB)
• fIN = 1kHz
L, R
C, S
(all)
L, R
C, S
L, R
C, S
(all)
(all)
1.7
97
90
0.03
0.004
0.01
93
83
1.33
1.85
1.00
2.0
dB
%
dB
Vrms
Vrms
S/N ratio
THD + N∗11
Dynamic range∗12
ADC maximum input level∗13
Output level∗14
EIAJ
(with "A" weighting filter)
EIAJ (0dB)
EIAJ (–3dB)
EIAJ (–60dB)
(Full-scale output)
11 See Graphs 1a and 1b.
12 THD + N during –60 dB input
13 The analog input level at which the ADC outputs full scale varies according to supply voltage AVDn.
When supply voltage AVDn contains deviation, calculate the maximum input level from (Formula 1) below
and adjust the level with the ADC front-end prefilter, etc., so that the waveform is not clipped at the
minimum voltage.
ADC maximum input level [Vrms] = 1.33 [Vrms]
×
(Formula 1)
14 Like the ADC, the DAC conversion gain also varies according to supply voltage AVDn. However, the DAC
has the reverse characteristics of the ADC, so the total gain between the ADC and DAC is constant.
Minimum supply voltage [V]
5.0 [V]
–60
–50
–40
–30
–20
–10
0
0.001
0.01
0.1
1
10
Graph 1a. L, R Channel Characteristics
Analog input level [dB]
0dB = 2Vrms
fin = 1kHz
–60
–50
–40
–30
–20
–10
0
0.001
0.01
0.1
1
10
Graph 1b. C, S Channel Characteristics
Analog input level [dB]
0dB = 2Vrms
fin = 1kHz
Channels
Min.
Typ.
Max.
Unit
Item
Measurement conditions


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