參數資料
型號： PCM1794ADBG4
英文描述： 24-bit,192-khz sampling,advanced segment, audio stereo digital-to-analog converter
中文描述： 24位,192 - kHz的采樣，先進的部分，立體聲音頻數字模擬轉換器
文件頁數： 17/30頁
文件大小： 301K
代理商： PCM1794ADBG4
SLES117A – AUGUST 2004 – REVISED NOVEMBER 2006
www.ti.com
17
FUNCTION DESCRIPTIONS
Audio data format
Audio format is selected using FMT0 (pin 11) and FMT1 (pin 12). The PCM1794A also supports monaural mode and DF
bypass mode using MONO (pin 1) and CHSL (pin 2). The PCM1794A can select the DF rolloff characteristics.
Table 2. Audio Data Format Select
MONO
0
CHSL
0
FMT1
0
FMT0
0
FORMAT
I2S
STEREO/MONO
Stereo
DF ROLLOFF
Sharp
0
0
0
1
Left-justified format
Stereo
Sharp
0
0
1
0
Standard, 16-bit
Stereo
Sharp
0
0
1
1
Standard, 24-bit
I2S
Stereo
Sharp
0
1
0
0
Stereo
Slow
0
1
0
1
Left-justified format
Stereo
Slow
0
1
1
0
Standard, 16-bit
Stereo
Slow
0
1
1
1
Digital filter bypass
I2S
Mono
–
1
0
0
0
Mono, L-channel
Sharp
1
0
0
1
Left-justified format
Mono, L-channel
Sharp
1
0
1
0
Standard, 16-bit
Mono, L-channel
Sharp
1
0
1
1
Standard, 24-bit
I2S
Mono, L-channel
Sharp
1
1
0
0
Mono, R-channel
Sharp
1
1
0
1
Left-justified format
Mono, R-channel
Sharp
1
1
1
0
Standard, 16-bit
Mono, R-channel
Sharp
1
1
1
1
Standard, 24-bit
Mono, R-channel
Sharp
Soft Mute
The PCM1794A supports mute operation. When MUTE (pin 10) is set to HIGH, both analog outputs are transitioned
to the bipolar zero level in –0.5-dB steps with a transition speed of 1/f
S
per step. This system provides pop-free muting
of the DAC output.
De-Emphasis
The PCM1794A has a de-emphasis filters for the sampling frequency of 44.1 kHz. The de-emphasis filter is controlled
using DEM (pin 3).
Zero Detect
When the PCM1794A detects that the audio input data in the L-channel and the R-channel is continuously zero for
1024 LRCKs in the PCM mode or that the audio input data is continuously zero for 1024 WDCKs in the external filter
mode, the PCM1794A sets ZERO (pin 13) to HIGH.
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相關代理商/技術參數
參數描述
PCM1794ADBR 功能描述:音頻數/模轉換器 IC 24-Bit 192 kHz Stereo Audio DAC RoHS:否 制造商:Texas Instruments 轉換器數量: 分辨率:16 bit 接口類型:I2S, UBS 轉換速率: 信噪比:98 dB 工作電源電壓:5 V DAC 輸出端數量:2 工作溫度范圍:- 25 C to + 85 C 電源電流:23 mA 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-32 封裝:Reel
PCM1794ADBRG4 功能描述:音頻數/模轉換器 IC 24-Bit 192 kHz Stereo Audio DAC RoHS:否 制造商:Texas Instruments 轉換器數量: 分辨率:16 bit 接口類型:I2S, UBS 轉換速率: 信噪比:98 dB 工作電源電壓:5 V DAC 輸出端數量:2 工作溫度范圍:- 25 C to + 85 C 電源電流:23 mA 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-32 封裝:Reel
PCM1794AQDBRQ1 功能描述:DAC, Audio 24 bit 192k I2S, PCM 28-SSOP 制造商:texas instruments 系列:- 包裝:剪切帶（CT） 零件狀態(tài):有效 類型:DAC，音頻 分辨率（位）:24 b 采樣率（每秒）:192k 數據接口:I2S，PCM 電壓源:模擬和數字 電壓 - 電源:3 V ~ 3.6 V，5V 工作溫度:-25°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:28-SSOP（0.209"，5.30mm 寬） 供應商器件封裝:28-SSOP 標準包裝:1
PCM1794DB 功能描述:音頻數/模轉換器 IC 24-Bit 192kHz Smplng Adv Stg Stereo DAC RoHS:否 制造商:Texas Instruments 轉換器數量: 分辨率:16 bit 接口類型:I2S, UBS 轉換速率: 信噪比:98 dB 工作電源電壓:5 V DAC 輸出端數量:2 工作溫度范圍:- 25 C to + 85 C 電源電流:23 mA 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-32 封裝:Reel
PCM1794DB 制造商:Texas Instruments 功能描述:24BIT AUDIO DAC SMD 1794 SSOP28
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