- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄367827 > PCM1739 24-Bit, 192kHz Sampling, Enhanced Multi-Level, Delta-Sigma, Audio DIGITAL-TO-ANALOG CONVERTER PDF資料下載
參數(shù)資料
| 型號(hào)： | PCM1739 |
| 英文描述： | 24-Bit, 192kHz Sampling, Enhanced Multi-Level, Delta-Sigma, Audio DIGITAL-TO-ANALOG CONVERTER |
| 中文描述： | 24位192kHz采樣，增強(qiáng)的多級(jí)，Δ-Σ，音頻數(shù)字模擬轉(zhuǎn)換器 |
| 文件頁(yè)數(shù)： | 11/16頁(yè) |
| 文件大?。?/td> | 140K |
| 代理商： | PCM1739 |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)當(dāng)前第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)
11
PCM1739
SYMBOL
PARAMETER
MIN
MAX
UNITS
t
BCY
t
BCH
t
BCL
t
BL
t
LB
t
DS
t
DH
BCK Pulse Cycle Time
BCK High Level Time
BCK Low Level Time
BCK Rising Edge to LRCK Edge
LRCK Falling Edge to BCK Rising Edge
DIN Set Up Time
DIN Hold Time
48 or 64f
S(1)
35
35
10
10
10
10
ns
ns
ns
ns
ns
ns
NOTE: (1) f
S
is the sampling frequency.
FIGURE 5. Audio Interface Timing.
FILT
OVERSAMPLING RATE
L
H
8x
4x ( Required for 192kHz operation)
TABLE IV. Digital Filter Oversampling Rate Selection.
MUTE
SOFT MUTE STATUS
L
H
Disabled
Enabled
TABLE V. Soft Mute Selection.
DEM1
DEM0
DE-EMPHASIS FUNCTION
L
L
H
H
L
H
L
H
OFF
32kHz De-Emphasis Filter
44.1kHz De-Emphasis Filter
48kHz De-Emphasis Filter
TABLE VI. Digital De-Emphasis.
4x/8x DIGITAL INTERPOLATION
The PCM1739’s digital filter may be configured for either
4x or 8x oversampling. The 8x oversampling setting is
utilized for sampling frequencies up to 96kHz, while 4x
oversampling is utilized for 192kHz operation. The FILT
input (pin 20) is used to select the oversampling rate of the
digital filter. Table IV shows the FILT pin configuration.
SOFT MUTE
The Soft Mute function provides for quiet muting of the
DAC outputs, V
L (pin 16) and V
R (pin 13). This is
done by ramping an internal digital attenuator from unity
gain to digital mute (all 0’s input to the digital filter). The
MUTE input (pin 21) is used to enable and disable the Soft
Mute function. Table V shows the MUTE pin configuration.
DIGITAL DE-EMPHASIS
The PCM1739 provides a De-emphasis function for sam-
pling rates equal to 32kHz, 44.1kHz or 48kHz. It is incorpo-
rated into the digital filter of the PCM1739. The De-empha-
sis function is required for proper playback of early audio
compact disks (CDs), which were mastered with signal
emphasis for higher frequencies in the audio band. This was
done to improve the poor high frequency performance of
early CD players. Plots of the de-emphasis filter and error
functions for 32kHz, 44.1kHz, and 48kHz are shown in the
Typical Performance Curves section of this data sheet.
The DEM0 (pin 26) and DEM1 (pin 27) inputs of the
PCM1739 are used to enable and disable the digital de-
emphasis function. Table VI shows the DEM0 and DEM1
pin configurations.
ANALOG OUTPUTS
The PCM1739 includes two independent output channels;
V
OUT
L (pin 16) and V
OUT
R (pin 13). These are unbalanced
outputs, each capable of driving 3.1Vp-p typical into a 5k
,
AC-coupled load (V
CC
= +5V). The internal output ampli-
fiers for V
OUT
L and V
OUT
R are DC biased to a DC common-
mode (or bipolar zero) voltage, equal to V
CC
/2.
The output amplifiers include an RC continuous time filter,
which helps to reduce the out-of-band noise energy present
at the DAC outputs due to the noise shaping characteristics
of the PCM1739’s delta-sigma D/A converters. The fre-
LRCK
BCLK
DATA
50% of V
DD
50% of V
DD
50% of V
DD
t
BCH
t
BCL
t
LB
t
BL
t
DS
t
DH
t
BCY
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PCM1739E | 24-Bit, 192kHz Sampling, Enhanced Multi-Level, Delta-Sigma, Audio DIGITAL-TO-ANALOG CONVERTER |
| PCM1740 | CONN,CPRSN,2-WAY |
| PCM1740E | Stereo Audio DIGITAL-TO-ANALOG CONVERTER with VCXO and PLL |
| PCM1741 | %2B3.3V Single-Supply, 24-Bit, 96kHz Sampling Enhanced Multilevel, Delta-Sigma, Audio DIGITAL-TO-ANALOG CONVERTER |
| PCM1741E | +3.3V Single-Supply, 24-Bit, 96kHz Sampling Enhanced Multilevel, Delta-Sigma, Audio DIGITAL-TO-ANALOG CONVERTER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PCM1739E | 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC 24-Bit 192kHz Smplg 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 |
| PCM1739E/2K | 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC 24-Bit 192kHz Smplg 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 |
| PCM1739E/2KG4 | 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC 24-Bit 192kHz Smplg 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 |
| PCM1739EG4 | 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC 24-Bit 192kHz Smplg 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 |
| PCM-174 | 功能描述:電線鑒定 Pre-Printed WM Card, Vinyl Cloth, .22" W RoHS:否 制造商:TE Connectivity / Q-Cees 產(chǎn)品:Labels and Signs 類型: 材料:Vinyl 顏色:Blue 寬度:0.625 in 長(zhǎng)度:1 in |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。