參數(shù)資料
型號(hào)： PCM1748E
英文描述： 24-Bit, 96kHz Sampling Enhanced Multilevel, Delta-Sigma, Audio DIGITAL-TO-ANALOG CONVERTER
中文描述： 24位，96kHz采樣加強(qiáng)多層次，Δ-Σ，音頻數(shù)字模擬轉(zhuǎn)換器
文件頁(yè)數(shù)： 8/22頁(yè)
文件大?。?/td> 323K
代理商： PCM1748E
PCM1748
SBAS165
8
SYSTEM CLOCK AND RESET
FUNCTIONS
SYSTEM CLOCK INPUT
The PCM1748 requires a system clock for operating the
digital interpolation filters and multilevel delta-sigma modu-
lators. The system clock is applied at the SCK input (pin 16).
Table I shows examples of system clock frequencies for
common audio sampling rates.
Figure 1 shows the timing requirements for the system clock
input. For optimal performance, it is important to use a clock
source with low phase jitter and noise. The PLL1700 multi-
clock generator from Texas Instruments is an excellent choice
for providing the PCM1748 system clock.
POWER-ON RESET FUNCTIONS
The PCM1748 includes a power-on reset function, as shown in
Figure 2. With the system clock active, and V
DD
> 2.0V (typical
1.6V to 2.4V), the power-on reset function will be enabled.
After the initialization period, the PCM1748 will be set to its
reset default state, as described in the Mode Control Register
section of this data sheet.
During the reset period, the analog outputs are forced to the
bipolar zero level, or V
CC
/2. After the reset period, the
internal register is initialized in the next 1/f
S
period and, if
SCK, BCK, and LRCK are provided continuously, the
PCM1748 provides proper analog output with unit group
delay against the input data.
FIGURE 1. System Clock Input Timing.
SAMPLING
FREQUENCY
256f
S
384f
S
512f
S
768f
S
8kHz
16kHz
32kHz
44.1kHz
48kHz
88.2kHz
96kHz
2.0480
4.0960
8.1920
11.2896
12.2880
22.5792
24.5760
3.0720
6.1440
12.2880
16.9344
18.4320
33.8688
36.8640
4.0960
8.1920
16.3840
22.5792
24.5760
45.1584
49.1520
6.1440
12.2880
24.5760
33.8688
36.8640
See Note (1)
See Note (1)
NOTE: (1) The 768f
S
system clock rate is not supported for f
S
> 64kHz.
TABLE I. System Clock Rates for Common Audio Sampling Frequencies.
SYSTEM CLOCK FREQUENCY (f
SCLK
) (MHz)
FIGURE 2. Power-On Reset Timing.
1024 System Clocks
Reset
Reset Removal
V
DD
Internal Reset
2.4V
2.0V
1.6V
0V
System Clock
Don't Care
t
SCKH
t
SCKL
2.0V
0.8V
System Clock
System clock pulse
cycle time
(1)
“
H
”
“
L
”
System Clock Pulse Width HIGH t
SCKH
: 7ns (min)
System Clock Pulse Width LOW t
SCKL
: 7ns (min)
NOTE: (1) 1/256f
S
, 1/384f
S
, 1/512f
S
, or 1/768f
S
.
相關(guān)PDF資料
PDF描述
PCM1748KE 24-Bit, 96kHz Sampling Enhanced Multilevel, Delta-Sigma, Audio DIGITAL-TO-ANALOG CONVERTER
PCM1750 Dual CMOS 18-Bit Monolithic Audio ANALOG-TO-DIGITAL CONVERTER
PCM1750P Dual CMOS 18-Bit Monolithic Audio ANALOG-TO-DIGITAL CONVERTER
PCM1750U Dual CMOS 18-Bit Monolithic Audio ANALOG-TO-DIGITAL CONVERTER
PCM1753DBQR 24-BIT, 192 kHz SAMPLING ENHANCED MULTI-LEVEL, DELTA-SIGMA, AUDIO DIGITAL-TO-ANALOG CONVERTER
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PCM1748E/2K 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC 24Bit/192kHz Smplg 6Ch Enh Mltl D-S DAC 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
PCM1748E/2KG4 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC 24Bit/192kHz Smplg 6Ch Enh Mltl D-S DAC 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
PCM1748EG4 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC 24Bit/192kHz Smplg 6Ch Enh Mltl D-S DAC 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
PCM1748KE 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC 24Bit/192kHz Smplg 6Ch Enh Mltl D-S DAC 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
PCM1748KE/2K 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC 24Bit/192kHz Smplg 6Ch Enh Mltl D-S DAC 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
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*