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AD1862 Folha de dados(PDF) 9 Page - Analog Devices

Nome de Peças AD1862
Descrição Electrónicos  Ultralow Noise 20-Bit Audio DAC
Download  12 Pages
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Fabricante Electrônico  AD [Analog Devices]
Página de início  http://www.analog.com
Logo AD - Analog Devices

AD1862 Folha de dados(HTML) 9 Page - Analog Devices

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AD1862
–9–
REV. A
The AD1862 is an extremely high performance DAC designed
for high-end consumer and professional digital audio applica-
tions. Compact disc players, digital preamplifiers, digital musi-
cal instruments and sound processors benefit from the extended
dynamic range, low THD+Noise and high signal-to-noise ratio.
For the first time, the D/A converter is no longer the basic limi-
tation in the performance of a CD player.
The performance of professional audio gear, such as mixing
consoles, digital tape recorders and multivoice synthesizers can
utilize the wide dynamic range and signal-to-noise ratio to
achieve greater performance. And, the AD1862’s space saving
16-pin package contributes to compact system design. This per-
mits a system designer to incorporate more voices in multivoice
synthesizers, more tracks in multitrack tape recorders and more
channels in multichannel mixing consoles.
Furthermore, high-resolution signal processing and waveform
generation applications are equally well served by the AD1862.
HIGH PERFORMANCE CD PLAYER
Figure 13 illustrates the application of AD1862s in a high per-
formance CD player. Two AD1862s are used, one for the left
channel and one for the right channel. The CXD11XX chip de-
codes the digital data coming from the read electronics and
sends it to the SM5813. Input data is sent to each AD1862 by
the SM5813 digital interpolating filter. This device operates at
8 times oversampling. The NE5534 op amps are chosen for
current-to-voltage converters due to their low distortion and low
noise. The output filters are 5-pole designs. For the purpose of
clarity, all bypass capacitors have been omitted from the schematic.
5V DIGITAL
SUPPLY
NE5534
LEFT
CHANNEL
OUTPUT
RIGHT
CHANNEL
OUTPUT
5V DIGITAL
SUPPLY
16.9344MHz
XTI
XTO DOL
CKO
BCKO
WCKO
DOR
BCKI
DIN
LRCI
SM5813
XTAI
LRCK
DATA
C210
SLOB
PSSL
SONY
CXD1125
1130
1135
OW20 CKDV
LOW PASS
FILTER
10
µF
1
µF
12V ANALOG
SUPPLY
1
2
3
4
5
6
7
89
10
11
12
13
14
15
16
LOW PASS
FILTER
10
µF
1
µF
12V ANALOG
SUPPLY
1
2
3
4
5
6
7
89
10
11
12
13
14
15
16
12V ANALOG
SUPPLY
NE5534
+
+
+
+
V
+
L
LE
V
S
TRIM
CLK
DATA
V
L
V
S
V
+
S
NR
2
ADJ
NR
1
AGND
I
OUT
R
F
DGND
AD1862
AD1862
V
+
S
NR
2
ADJ
NR
1
AGND
I
OUT
R
F
DGND
V
+
L
LE
V
S
TRIM
CLK
DATA
V
L
V
S
Figure 13. High Performance 20-Bit 8
× Oversampling CD Player Application


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