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參數(shù)資料
| 型號： | TC9470FN |
| 元件分類： | DAC |
| 英文描述： | SERIAL, PARALLEL, WORD INPUT LOADING, 1-BIT DAC, PDSO24 |
| 封裝： | 0.300 INCH, 0.65 MM PITCH, PLASTIC, SSOP-24 |
| 文件頁數(shù)： | 14/19頁 |
| 文件大?。?/td> | 377K |
| 代理商： | TC9470FN |
TC9470FN
2002-02-27
4
Description of Block Operations
1. Crystal Oscillator Circuit and Timing Generator
The clock required for internal operations is generated by connecting a crystal and condensers as shown
in the diagram below.
The IC will also operate when a system clock is input from an external source through the XI pin (pin 15).
However, in this situation, due consideration must be given to the fact that waveform characteristics, such
as jitter and rising/falling characteristics of the system clock, significantly affect the DA converter’s noise
distortion and the S/N ratio.
The timing generator generates the clocks and process timing signals required for such functions as
digital filtering and de-emphasis filtering.
Figure 1 Crystal Oscillator Circuit Configuration (when in the 384 fs mode)
CL = 10 to 33 pF
To internal circuit
GNDX
16.9344 MHz
CL
XI
XO VDX
CL
X’tal
MCK
Use a crystal with a low CI value and favorable start-up characteristics.
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