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參數資料
| 型號： | PCM1738 |
| 英文描述： | 24-Bit, 192kHz Sampling, Advanced Segment, Audio-Stereo DIGITAL-TO-ANALOG CONVERTER |
| 中文描述： | 24位192kHz采樣，高級分段，音頻立體聲數字模擬轉換器 |
| 文件頁數： | 30/33頁 |
| 文件大?。?/td> | 2274K |
| 代理商： | PCM1738 |
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PCM1738
SBAS174B
30
CONSIDERATIONS FOR
APPLICATIONS CIRCUITS
PCB LAYOUT GUIDELINES
A typical PCB floor plan for the PCM1738 is shown in
Figure 14. 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 PCM1738 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 perfor-
mance of the DACs. In cases where a common +5V supply
must be used for the analog and digital sections, an induc-
tance (RF choke, ferrite bead) should be placed between the
analog and digital +5V supply connections to avoid coupling
of the digital switching noise into the analog circuitry.
Figure 15 shows the recommended approach for single-
supply applications.
FIGURE 14. Recommended PCB Layout.
PCM1738
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
+5VA
+V
S
AGND
REG
–V
S
FIGURE 15. Single-Supply PCB Layout.
PCM1738
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
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| PCM1739 | 24-Bit, 192kHz Sampling, Enhanced Multi-Level, Delta-Sigma, Audio DIGITAL-TO-ANALOG CONVERTER |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| PCM1738E | 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 |
| PCM1738E | 制造商:Texas Instruments 功能描述:D/A CONVERTER (D-A) IC |
| PCM1738E/2K | 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 |
| PCM1738E/2KG4 | 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 |
| PCM1738E2K | 制造商:BB 制造商全稱:BB 功能描述:24-Bit, 192kHz Sampling, Advanced Segment, Audio-Stereo DIGITAL-TO-ANALOG CONVERTER |
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