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PDF PCM1710 Data sheet ( Hoja de datos )
| Número de pieza | PCM1710 | |
| Descripción | Stereo Audio DIGITAL-TO-ANALOG CONVERTER | |
| Fabricantes | Burr-Brown Corporation | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de PCM1710 (archivo pdf) en la parte inferior de esta página. Total 17 Páginas | ||
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® 49%
FPO
PCM1710U
Stereo Audio
DIGITAL-TO-ANALOG CONVERTER
FEATURES
q COMPLETE STEREO DAC:
8X Oversampling Digital Filter
Multi-Level Delta-Sigma DAC
Analog Low Pass Filter
Output Amplifier
q HIGH PERFORMANCE:
–92dB THD+N
98dB Dynamic Range
110dB SNR
q ACCEPTS 16 OR 20 BITS INPUT DATA
q SYSTEM CLOCK: 256fs or 384fs
q SINGLE +5V POWER SUPPLY
q ON-CHIP DIGITAL FILTER:
Soft Mute and Attenuator
Digital De-emphasis
Double-Speed Dubbing Mode
q SMALL 28-PIN SOIC PACKAGE
DESCRIPTION
The PCM1710 is a complete stereo audio digital-to-
analog converter, including digital interpolation filter,
delta-sigma DAC, and analog voltage output. PCM1710
can accept either 16-bit normal or 20-Bit normal input
data (MSB first, right justified), or 16-bit IIS data
(32-bits per word, continuous clock).
The digital filter performs an 8X interpolation func-
tion, as well as special functions such as soft mute,
digital attenuation, de-emphasis and double-speed
dubbing. Performance of the digital feature is excel-
lent, featuring –62dB stop band attenuation and
±0.008dB ripple in the pass band.
PCM1710 is suitable for a wide variety of consumer
applications where good performance is required.
Its low cost, small size and single +5V power supply
make it ideal for automotive CD players, bookshelf
CD players, BS tuners, keyboards, MPEG audio,
MIDI applications, set-top boxes, CD-ROM drives,
CD-Interactive and CD-Karaoke systems.
Digital In
Input Interface
and
Attentuator
Mode Control
Oversampling
Digital Filter
System Clock
4th-Order
Multi-Level
Delta
Sigma
DAC
Low-Pass
Filter
Output
Op Amp
Lch OUT
Rch OUT
International Airport Industrial Park • Mailing Address: PO Box 11400 • Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd. • Tucson, AZ 85706
Tel: (520) 746-1111 • Twx: 910-952-1111 • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
© 1994 Burr-Brown Corporation
PDS-1217B
Printed in U.S.A. June, 1995
1 page  
DATA INPUT TIMING
1 f/s
Left-channel Data
Right-channel Data
MSB
LSB MSB
LSB
DIN
12
14 15 16
12
14 15 16
BCKIN
LRCIN
FIGURE 1. Normal Format, 16-Bit (LRCIN H: Lch).
DIN
BCKIN
LRCIN
1 f/s
Left-channel Data
MSB
LSB
12
18 19 20
Right-channel Data
MSB
LSB
12
18 19 20
FIGURE 2. Normal Format, 20-Bit (LRCIN H: Lch).
DIN
BCKIN
LRCIN
1 f/s
MSB
16 1 2
Left-channel Data
LSB MSB
3 13 14 15 16 1 2
Right-channel Data
13 14
LSB
15 16
FIGURE 3. IIS Format, (16-Bit, 32 BCKIN Clock Cycles Per fs Interval).
5 PCM1710U
®
5 Page 
MODE
B0 B1 B2 BIT NO. FLAG
B3 DEEM2
B4 DEEM1
Mode H L L
1
Mode H L H
2
B5
B6
B7
B3
B4
B5
B6
B7
IIR
MUTE
DSD
TST
IW
LRPL
IIS
FUNCTION MODE SELECTION
MODE
Sampling Frequency
for De-emphasis
BIT VALUE
SELECTED FUNCTION
DEEM2
01
DEEM1 0
48kHz
1 32kHz 44.1kHz
De-emphasis
Mute
Double-Speed
Not Assigned
0
1
0
1
0
1
De-emphasis OFF
De-emphasis ON
Mute OFF
Mute ON
Double-speed OFF
Double-speed ON
Test Mode
Input Resolution
Polarity for LRCI
Input Format
0
1
0
1
0
1
0
1
Infinite Zero Detection OFF
Infinite Zero Detection ON
16-Bit
20-Bit
Lch:high/Rch:low
Lch:low/Rch:high
Normal
IIS
MODE BY
DEFAULT
OFF
OFF
OFF
ON
16-Bit
Lch:high
Rch:low
Normal
TABLE VII. Serial-Mode Control Input Format (Pin 24 [MODE] = H)—Refer to Figure 6 for Timing Diagram.
MC
ML
Attenuation
Mode
L
MD
Mode 1
H
ATT_DATA
D6 D5 D4 D3 D2 D1 D0
L
L
DEEM2 DEEM1
IIR
MUTE
DSD
Mode 2
H
L
H
TST IW LRPL IIS
Bit# B0
B1
B2
B3
B4 B5
B6
B7
NOTE: Cycle Time for Model Control—Cycle time for mode control must be set over 128 times of minimum system clock.
FIGURE 6. Mode Control Input Format, Serial Mode.
DIGITAL ATTENUATION
One of the functions which can be implemented through use
of the serial mode control is attenuation. This function
allows the user to control the level of the output, indepen-
dent of the of the input level set by the actual input data
supplied to the DAC.
Referring to Figure 6, when the first data bit (B0) on MD
(pin 26) is low, the attenuation function is enabled. The next
seven bits (B1 - B6) define a binary value, ATT_DATA, that
indicates the desired level of attenuation. The attenuation
level is given by:
Level = 20log10 (1 - ATT_DATA/127) dB
When all 7 bits of the ATT_DATA word are high
(ATT_DATA = 127), attenuation is infinite and the output
of PCM1710 will be zero.
MODE 1 CONTROLS
This mode can be enabled with the sequence of 1, 0, 0 as the
first three bits on MD (pin 26). This mode allows for the
following functions:
De-emphasis
De-emphasis Frequency
Soft Mute
Double-Speed Dubbing
On/Off
32kHz, 44.1kHz, 48kHz
On/Off
On/Off
DIGITAL DE-EMPHASIS
PCM1710 allows three different sampling rates for digital
de-emphasis. B3 and B4 are used for binary control of the
de-emphasis frequency:
B3 B4
00
01
10
11
Frequency
OFF
48kHz
32kHz
44.1kHz
®
11 PCM1710U
11 Page | ||
| Páginas | Total 17 Páginas | |
| PDF Descargar | [ Datasheet PCM1710.PDF ] | |
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