參數(shù)資料
型號： PCM1723
英文描述： Stereo Audio DIGITAL-TO-ANALOG CONVERTER WITH PROGRAMMABLE PLL
中文描述： 立體聲音頻數(shù)字模擬轉(zhuǎn)換器，具有可編程鎖相環(huán)
文件頁數(shù)： 8/15頁
文件大?。?/td> 218K
代理商： PCM1723
8
PCM1723
FIGURE 7. Audio Data Input Timing.
PCM1723’s internal PLL can be programmed for nine
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 PCM1723 is 100% accurate.
SPECIAL FUNCTIONS
PCM1723 includes several special functions, including digi-
tal attenuation, digital de-emphasis, soft mute, data format
selection and input word resolution. These functions are
controlled using a three-wire interface. MD (pin 8) is used
for the program data, MC (pin 7) is used to clock in the
program data, and ML (pin 6) is used to latch in the program
data. Table III lists the selectable special functions.
FUNCTION
Input Audio Data Format Selection
Normal Format
I
2
S Format
DEFAULT MODE
Normal Format
Input Audio Data Bit Selection
16/20/24 Bits
16 Bits
Input LRCIN Polarity Selection
Lch/Rch = High/Low
Lch/Rch = Low/High
Lch/Rch = High/Low
De-emphasis Control
OFF
Soft Mute Control
OFF
Attenuation Control
Lch, Rch Individually
Lch, Rch Common
0dB
Lch, Rch Individually Fixed
Infinite Zero Detection Circuit Control
OFF
Operation Enable (OPE)
Enabled
Sample Rate Selection
Internal System Clock Selection
256f
S
384f
S
Double Sampling Rate Selection
Standard Sampling Rate—44.1/48/32kHz
Double Sampling Rate—88.2/96/32kHz
Half Sampling Rate—22.05/24/16kHz
Sampling Frequency
44.1kHz Group
48kHz Group
32kHz Group
384f
S
Standard Sampling Rate
44.1kHz
Analog Output Mode
L, R, Mono, Mute
Stereo
TABLE III. Selectable Functions.
Sampling Frequencies-LRCIN (kHz)
Half of Standard Sampling Freq
Standard Sampling Freq
Double of Standard Sampling Freq
16
32
64
22.05
44.1
88.2
24
48
96
TABLE I. Sampling Frequencies.
Sampling
Frequency
(LRCIN)
System Clock
256f
S
System Clock
384f
S
16kHz
Half
4.096MHz
6.144MHz
32kHz
Standard
8.192MHz
12.288MHz
64kHz
Double
16.384MHz
24.576MHz
22.05kHz
Half
5.6448MHz
8.4672MHz
44.1kHz
Standard
11.2896MHz
16.9344MHz
88.2kHz
Double
22.5792MHz
33.8688MHz
24kHz
Half
6.144MHz
9.216MHz
48kHz
Standard
12.288MHz
18.432MHz
96kHz
Double
24.576MHz
36.864MHz
TABLE II. Sampling Frequencies vs Internal System
Clock (= Output Frequencies of PLL).
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
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 SCKO clock for external
circuit, external buffer circuit is effective to avoid degrading
audio performance.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PCM1723E 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC Ster DAC w/Prog 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
PCM1723E/2K 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC Ster DAC w/Prog 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
PCM1723E/2KG4 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC Ster DAC w/Prog 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
PCM1723EG 制造商:Rochester Electronics LLC 功能描述: 制造商:Texas Instruments 功能描述:
PCM1723EG/2K 制造商:TI 制造商全稱:Texas Instruments 功能描述:DIGITAL-TO-ANALOG CONVERTER With Programmable PLL
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