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參數(shù)資料
| 型號： | DSD1608PAHR |
| 英文描述： | 8-CHANNEL, ENHANCED MULTIFORMAT, DELTA-SIGMA, DIGITAL-TO-ANALOG CONVERTER |
| 中文描述： | 8通道，增強(qiáng)多格式，Δ-Σ，數(shù)字模擬轉(zhuǎn)換器 |
| 文件頁數(shù)： | 28/41頁 |
| 文件大?。?/td> | 293K |
| 代理商： | DSD1608PAHR |
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DSD1608
SLES040
–
JUNE 2002
www.ti.com
28
APPLICATION INFORMATION
CONNECTION DIAGRAMS
A basic connection diagram is shown in Figure 31, with the necessary power supply bypass and decoupling
components.
The use of series resistors (22
to 100
) is recommended for the xSCK, PLRCK, xBCK, PDATAX, and DSDx inputs.
The series resistor combines with the stray PCB and device input capacitance to form a low-pass filter which reduces
high-frequency noise emissions and helps to dampen glitches and ringing present on clock and data lines.
POWER SUPPLIES AND GROUNDING
The DSD1608 requires a 5-V analog supply and a 3.3-V digital supply. The 5-V supply is used to power the DAC
analog and output filter circuitry, while the 3.3-V supply is used to power the digital filter and serial interface circuitry.
For best performance, the 3.3-V digital supply should be derived from the 5-V supply by using a linear regulator. Texas
Instruments
’
REG1117-3.3 is an ideal choice for this application.
Proper power supply bypassing is shown in Figure 31. The 10-
μ
F capacitors should be tantalum or aluminum
electrolytic, while the 0.1-
μ
F capacitors are ceramic (the X7R type is recommended for surface-mount applications).
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