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參數(shù)資料
| 型號： | PCM1742 |
| 英文描述： | 24-Bit, 192kHz Sampling Enhanced Multilevel, Delta-Sigma, Audio DIGITAL-TO-ANALOG CONVERTER |
| 中文描述： | 24位192kHz采樣加強多層次，Δ-Σ，音頻數(shù)字模擬轉換器 |
| 文件頁數(shù)： | 17/22頁 |
| 文件大小： | 322K |
| 代理商： | PCM1742 |
PCM1742
SBAS176
17
PCB LAYOUT GUIDELINES
A typical PCB floor plan for the PCM1742 is shown in
Figure 12. A ground plane is recommended, with the analog
and digital sections being isolated from one another using a
split or cut in the circuit board. The PCM1742 should be
oriented with the digital I/O pins facing the ground plane
split/cut to allow for short, direct connections to the digital
audio interface and control signals originating from the
digital section of the board.
Separate power supplies are recommended for the digital and
analog sections of the board. This prevents the switching noise
present on the digital supply from contaminating the analog
power supply and degrading the dynamic performance of the
PCM1742. In cases where a common +5V supply must be used
for the analog and digital sections, an inductance (RF choke,
ferrite bead) should be placed between the analog and digital
+5V supply connections to avoid coupling of the digital switch-
ing noise into the analog circuitry. Figure 13 shows the recom-
mended approach for single-supply applications.
PCM1742
V
CC
V
DD
DGND
Return Path for Digital Signals
Analog
Ground
Digital
Ground
AGND
Output
Circuits
DIGITAL SECTION
ANALOG SECTION
Digital Logic
and
Audio
Processor
Digital Power
+V
D
DGND
Analog Power
+5V
A
+V
S
AGND
REG
–
V
S
PCM1742
V
CC
V
DD
DGND
Output
Circuits
RF Choke or Ferrite Bead
Common
Ground
AGND
DIGITAL SECTION
ANALOG SECTION
V
DD
Power Supplies
+5V
+V
S
AGND
REG
–
V
S
Digital Logic
and
Audio
Processor
FIGURE 12. Recommended PCB Layout.
FIGURE 13. Single-Supply PCB Layout.
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| PCM1742E | 功能描述:音頻數(shù)/模轉換器 IC 24-Bit 192kHZ Samp Enh Delta-Sig DAC RoHS:否 制造商:Texas Instruments 轉換器數(shù)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(shù)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 |
| PCM1742E/2K | 功能描述:音頻數(shù)/模轉換器 IC 24-Bit 192kHZ Samp Enh Delta-Sig DAC RoHS:否 制造商:Texas Instruments 轉換器數(shù)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(shù)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 |
| PCM1742E/2KG4 | 功能描述:音頻數(shù)/模轉換器 IC 24-Bit 192kHZ Samp Enh Delta-Sig DAC RoHS:否 制造商:Texas Instruments 轉換器數(shù)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(shù)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 |
| PCM1742EG4 | 功能描述:音頻數(shù)/模轉換器 IC 24-Bit 192kHZ Samp Enh Delta-Sig DAC RoHS:否 制造商:Texas Instruments 轉換器數(shù)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(shù)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 |
| PCM1742KE | 功能描述:音頻數(shù)/模轉換器 IC 24-Bit 192kHZ Samp Enh Delta-Sig DAC RoHS:否 制造商:Texas Instruments 轉換器數(shù)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(shù)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 |
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