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AD1954YST Folha de dados(PDF) 7 Page - Analog Devices

Nome de Peças AD1954YST
Descrição Electrónicos  SigmaDSP??3-Channel, 26-Bit Signal Processing DAC
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Fabricante Electrônico  AD [Analog Devices]
Página de início  http://www.analog.com
Logo AD - Analog Devices

AD1954YST Folha de dados(HTML) 7 Page - Analog Devices

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AD1954
–7–
PIN FUNCTION DESCRIPTIONS
Pin No.
Pin No.
Input/
(44-MQFP) (48-LQFP) Mnemonic
Output Description*
1
NC
No Connect
1
2
MCLK2
IN
Master Clock Input 2 256 fS
Master Clock Input 2 256 f
Master Clock Input 2 256 f /512 fS
/512 f
/512 f
2
3
MCLK1
IN
Master Clock Input 1 256 fS
Master Clock Input 1 256 f
Master Clock Input 1 256 f /512 fS
/512 f
/512 f
3
4
MCLK0
IN
Master Clock Input 0 256 fS
Master Clock Input 0 256 f
Master Clock Input 0 256 f /512 fS
/512 f
/512 f
4
5
DEEMP/
IN
Enables 44.1 kHz De-emphasis Filter (Others Available through SPI Control)
SDATA_AUX
Auxiliary Serial Data Input
5
6
MUTE
IN
Mute Signal. Initiates volume ramp-down.
6
7
DVDD
Digital Supply for DSP Core, 4.5 V to 5.5 V
7
8
SDATA2
IN
Serial Data Input 2
8
9
BCLK2
IN
Bit Clock 2
9
10
LRCLK2
IN
Left/Right Clock 2
10
11
SDATA1
IN
Serial Data Input 1
11
12
BCLK1
IN
Bit Clock 1
12
13
DGND
Digital Ground
13
14
LRCLK1
IN
Left/Right Clock 1
14
15
SDATA0
IN
Serial Data Input 0
15
16
BCLK0
IN
Bit Clock 0
16
17
LRCLK0
IN
Left/Right Clock 0
17
18
CDATA
IN
SPI Data Input
18
19
CCLK
IN
SPI Data Bit Clock
19
20
CLATCH
IN
SPI Data Framing Signal
20
21
RESETB
IN
Reset Signal, Active Low
21
22
AVDD
Analog 5 V Supply
22
23
AGND
Analog GND
24
NC
No Connect
23
25
VOUTS–
OUT
Negative Sub Analog DAC Output
24
26
VOUTS+
OUT
Positive Sub Analog DAC Output
25
27
AGND
Analog GND
26
28
VOUTR–
OUT
Negative Left Analog DAC Output
27
29
VOUTR+
OUT
Positive Left Analog DAC Output
28
30
AVDD
Analog 5 V Supply
29
31
AGND
Analog GND
30
32
AVDD
Analog 5 V Supply
31
33
VOUTL+
OUT
Positive Left Analog DAC Output
32
34
VOUTL–
OUT
Negative Left Analog DAC Output
33
35
AGND
Analog GND
36
NC
No Connect
37
NC
No Connect
34
38
VREF
IN
Connection for Filtered AVDD/2
35
39
FILTCAP
IN
Connection for Noise Reduction Capacitor
36
40
ZEROFLAG OUT
Zero Flag Output. High when both left and right channels are 0 for 1024 frames.
37
41
SDATAOUT OUT
Serial Data Mux Output
38
42
BCLKOUT OUT
Bit Clock Mux Output
39
43
LRCLKOUT OUT
Left/Right Clock Mux Output
40
44
ODVDD
Digital Supply Pin for Output Drivers, 2.5 V to 5.5 V
41
45
DCSOUT
OUT
Data Capture Serial Output for Data Capture Registers. Use in conjunction with
selected LRCLK and BCLK to form a 3-wire output.
42
46
COUT
OUT
SPI Data Output.Three-stated when inactive.
43
47
MCLKOUT OUT
Master Clock Output 512 fS
Master Clock Output 512 f
Master Clock Output 512 f /256 fS
/256 f
/256 f (Frequency Selected by SPI Register)
44
48
DGND
Digital Ground
*For a complete description of the pins, refer to the Pin Functions section.
REV. A


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