|
|
PDF PCM1712U Data sheet ( Hoja de datos )
| Número de pieza | PCM1712U | |
| Descripción | DIGITAL-TO-ANALOG CONVERTER | |
| Fabricantes | Burr-Brown Corporation | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de PCM1712U (archivo pdf) en la parte inferior de esta página. Total 16 Páginas | ||
|
No Preview Available !
® 49% PCM1712U
FPO
Stereo Audio
DIGITAL-TO-ANALOG CONVERTER
FEATURES
q 16-BIT RESOLUTION
q COMPLETE STEREO DAC:
8X Oversampling Digital Filter
Multi-Level Delta-Sigma DAC
Analog Low Pass Filter
Output Amplifier
q HIGH PERFORMANCE:
–87dB THD + N
94dB Dynamic Range
98dB SNR
q SYSTEM CLOCK: 384fs
q SINGLE +5V POWER SUPPLY
q ON-CHIP DIGITAL FILTER:
Soft Mute and Attenuation
Digital De-emphasis
Double Speed Dubbing Mode
q SMALL 28-PIN SOIC PACKAGE
DESCRIPTION
The PCM1712 is a complete low cost stereo, audio
digital-to-analog converter, including digital interpo-
lation filter, 3rd-order delta-sigma DAC, and analog
output amplifiers. PCM1712 accepts 16-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.
PCM1712 is suitable for a wide variety of cost-sensi-
tive consumer applications where good performance is
required. Its low cost, small size and single +5V power
supply make it ideal for automotive CD players, book-
shelf CD players, BS tuners, keyboards, MPEG audio,
MIDI applications, set-top boxes, CD-ROM drives,
CD-Interactive and CD-Karaoke systems. PCM1712
has the same pinout functions as PCM1710.
Lch/Rch ATT Control
Digital In
Input Interface
and
Attentuator
Oversampling
Digital Filter
Mode Control
System Clock
3rd-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-1245B
Printed in U.S.A. June, 1995
1 page  
DATA INPUT TIMING
DIN
1 f/s
Left-channel Data
MSB
LSB
12
14 15 16
Right-channel Data
MSB
LSB
12
14 15 16
BCKIN
LRCIN
FIGURE 1. Normal Format, 16-Bit (LRCIN H: Lch).
1 f/s
Left-channel Data
Right-channel Data
MSB
LSB MSB
LSB
DIN
16 1 2 3
13 14 15 16 1 2 3
13 14 15 16
BCKIN
LRCIN
FIGURE 2 . IIS Format, 16-Bit (32 BCKIN/fs, continuous data).
BCKIN
DIN
LRCIN
tBCWH
tBCY
tBCWL
tDH tDS
tBL tLB
FIGURE 3. Data Input Timing.
BCK Pulsewidth (H Level)
BCK Pulsewidth (L Level
BCK Pulse Cycle Time
DIN Setup Time
DIN Hold Time
BCK Rising Edge → LRCI Edge
LRC I Edge → BCK Rising Edge
tBCWH
tBCWL
tBCY
tDS
tDH
tBL
tLB
TABLE I. Data Input Timing Specifications.
70ns (min)
70ns (min)
140ns (min)
30ns (min)
30ns (min)
30ns (min)
30ns (min)
5
PCM1712
®
5 Page 
MODE
B0 B1 B2 BIT NO.
FLAG
B3 DEEM2
B4 DEEM1
Mode 1 0 0
1
B5
B6
B7
B3
B4
IIR
MUTE
DSD
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
Not Assigned
Mode 1 0 1
2
B5
B6
B7
LRPL
IIS
Not Assigned
Polarity for LRCI
Input Format
TABLE VII. Serial-Mode Control Input Format (MODE: H, Pin 24).
0
1
0
1
Lch:high/Rch:low
Lch:low/Rch:high
Normal
IIS
MODE BY
DEFAULT
44.1kHz
OFF
OFF
OFF
Lch:HIGH
Rch:LOW
Normal
MC
ML
Alternation
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
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 192 times of minimum system clock.)
FIGURE 5. Mode Control Input Format, Serial Mode.
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:
B3 B4
00
01
10
11
FREQUENCY
OFF
48kHz
32kHz
44.1kHz
De-emphasis
De-emphasis Frequency
Soft Mute
Double-Speed Dubbing
On/Off
32kHz, 44.1kHz, 48kHz
On/Off
On/Off
Once the reset has been established on pin 27 (MC), the de-
emphasis frequency defaults to 44.1kHz. B5 can be used to
override B3 and B4; a logic low on B5 disables de-emphasis,
and a logic high on B5 forces de-emphasis at 44.1kHz.
DIGITAL DE-EMPHASIS
PCM1712 allows three different sampling rates for digital
de-emphasis. B3 and B4 are used for binary control of the
de-emphasis frequency:
SOFT MUTE
Soft mute is enabled when B6 is high. The soft mute occurs
gradually, unlike the forced infinite zero detection. When
the mute data bit is high, complete muting will occur in
127/fs seconds.
®
11 PCM1712
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet PCM1712U.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| PCM1712 | DIGITAL-TO-ANALOG CONVERTER | Burr-Brown Corporation |
| PCM1712U | DIGITAL-TO-ANALOG CONVERTER | Burr-Brown Corporation |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |