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(yè)數(shù)： 8/15頁(yè)
文件大?。?/td> 220K
代理商： PCM1727
8
PCM1727
1
2
3
14
15
1/f
S
L_ch
R_ch
MSB
LSB
16
LRCIN (pin 19)
BCKIN (pin 17)
AUDIO DATA WORD = 16-BIT
DIN (pin 18)
1
2
3
14
15
MSB
LSB
16
1
2
3
18
19
MSB
LSB
20
AUDIO DATA WORD = 20-BIT
DIN (pin 18)
1
2
3
18
19
MSB
LSB
20
2
1
2
1
2
1
1
2
3
22
23
MSB
LSB
24
AUDIO DATA WORD = 24-BIT
DIN (pin 18)
1
2
3
22
23
MSB
LSB
24
PCM1727’s internal PLL can be programmed for three
different sampling frequencies (LRCIN), as shown in Table
I. The internal sampling clocks generated by the various
programmed frequencies are shown in Table II. The system
clock output frequency for PCM1727 is 100% accurate.
Frequency error of generated system clock by programmed
PLL is less than
±
0.03ppm due to high accuracy PLL
construction.
To provide MCKO clock and SCKO1, SCKO2, SCKO3
clocks for external circuits, an external buffer may be used
to avoid degrading audio performance (as shown in the
connection diagram, in Figure 1).
Sampling Frequencies-LRCIN (kHz)
Standard Sampling Freq
Double of Standard Sampling Freq
44.1
48
96
TABLE I. Sampling Frequencies.
Sampling
Frequency
(LRCIN)
SCKO2
System Clock
SCKO3
System Clock
44.1kHz
Standard
16.9344MHz
33.8688MHz
48kHz
Standard
18.4320MHz
36.8640MHz
96kHz
Double
36.8640MHz
36.8640MHz
TABLE II. Sampling Frequencies vs Internal System Clock
(= Output Frequencies of Dual PLL).
FIGURE 7. Audio Data Input Timing.
LRCKIN
BCKIN
DIN
1.4V
1.4V
1.4V
t
BCH
t
BCL
t
LB
t
BL
t
DS
BCKIN Pulse Cycle Time
BCKIN Pulse Width High
BCKIN Pulse Width Low
BCKIN Rising Edge to LRCIN Edge
LRCIN Edge to BCKIN Rising Edge
DIN Set-up Time
DIN Hold Time
: t
BCY
: t
BCH
: t
BCL
: t
BL
: t
LB
: t
DS
: t
DH
: 100ns (min)
: 50ns (min)
: 50ns (min)
: 30ns (min)
: 30ns (min)
: 30ns (min)
: 30ns (min)
t
DH
t
BCY
FIGURE 6. “I
2
S” Data Input Timing.
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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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