參數(shù)資料
型號(hào)： PCM1727
英文描述： Stereo Audio DIGITAL-TO-ANALOG CONVERTER WITH PROGRAMMABLE DUAL PLL TM
中文描述： 立體聲音頻數(shù)字模擬轉(zhuǎn)換器，具有可編程雙鎖相環(huán)商標(biāo)
文件頁數(shù)： 6/15頁
文件大?。?/td> 220K
代理商： PCM1727
6
PCM1727
DIN
BCKIN
LRCIN
SCKO2
SCKO1
SCKO3
DATA
BCK
LRCK
SCI
XT1
18
17
19
20
7
8
9
10
ML
MC
MD
RSTB
14
XT2
2
23
22
3
11
15
16
1
24
27MHz CLK OUT
+10μF
Post
LPF
Post
LPF
Analog
Mute
Analog
Mute
STRB
SCKO
SDO
PIO
System
Controller
Rch Analog Out
Lch Analog Out
12
13
MPEG
Decoder
Buffer
384f
S
AGND
PGND DGND
V
CA
+5V Analog
+5V Analog
V
DD
V
CP
V
OUT
L
V
OUT
R
ZERO
CAP
PCM1727
27MHz
Master
Clock
CD-DA
DSP
21
Buffer
33.8688M
Karaoke
DSP
6
Buffer
768/384f
S
TYPICAL CONNECTION DIAGRAM
Figure 1 illustrates the typical connection diagram for
PCM1727 in an DVD Audio application. The 27MHz mas-
ter video clock (f
M
) drives XT1 (pin 1) of PCM1727. A
programmable system clock is generated by the PCM1727
PLL, with SCKO2 used to drive the MPEG2 decoder’s
system clock input. SCKO1 used to drive the CD-DA DSP’s
system clock input, SCKO3 used to drive Karaoke DSP’s
system clock input. The standard audio signals (data, bit
clock, and word clock) are generated in the decoder from
PCM1727’s system clock, providing synchronization of
audio and video signals.
DUAL PLL CIRCUIT
PCM1727 has a programmable internal DUAL PLL circuit,
as shown in Figure 2. The PLL is designed to accept a
27MHz master clock or crystal oscillator and generate all
internal system clocks required to operate the digital filter
and
Σ
modulator, at 384f
S
. If an external master clock is
used, XT2 should be connected to ground. The PLL will
directly track any variations in the master clock’s frequency,
and jitter on the system clock is specified at 150ps typical.
Figure 3 illustrates the timing requirements for the 27MHz
master clock. Figure 4 illustrates the system clock connec-
tions for an external clock or crystal oscillator.
FIGURE 1. Connection Diagram for External Master Clock in a Typical MPEG2 Application.
FIGURE 2. PLL Block Diagram.
Oscillator
XT2
XT1
MCKO
27MHz
Phase Detector
and Loop Filter
VCO
PLL1
PLL2
M Counter
N Counter
Counter P
24
1
4
SCKO1
33.8688MHz
21
SCKO3
768fs/384fs
6
SCKO2
384fs
Internal
System
Clock
20
Data
ROM
Frequency Control
Phase Detector
and Loop Filter
VCO
N Counter
M Counter
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PCM1728 24-Bit, 96kHz Sampling CMOS Delta-Sigma Stereo Audio DIGITAL-TO-ANALOG CONVERTER
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PCM1727E 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC Stereo DAC w/Prog Dual PLL RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量: 分辨率:16 bit 接口類型:I2S, UBS 轉(zhuǎn)換速率: 信噪比:98 dB 工作電源電壓:5 V DAC 輸出端數(shù)量:2 工作溫度范圍:- 25 C to + 85 C 電源電流:23 mA 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-32 封裝:Reel
PCM1727E/2K 功能描述:數(shù)模轉(zhuǎn)換器- DAC Stereo DAC w/Prog Dual PLL RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時(shí)間:1 us 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube
PCM1727E/2KG4 功能描述:數(shù)模轉(zhuǎn)換器- DAC Stereo DAC w/Prog Dual PLL RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時(shí)間:1 us 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube
PCM1727E-2 功能描述:數(shù)模轉(zhuǎn)換器- DAC Stereo DAC w/Prog Dual PLL RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時(shí)間:1 us 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube
PCM1727E2K 制造商:TI 制造商全稱:Texas Instruments 功能描述:DIGITAL-TO-ANALOG CONVERTER With Programmable Dual PLL
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