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參數(shù)資料
| 型號： | BW0406X_LGISDN |
| 元件分類： | Codec |
| 英文描述： | BW0406X_LGISDN Sigma-Delta Voice CODEC|Data Sheet |
| 中文描述： | BW0406X_LGISDNΣ-Δ語音編解碼器|數(shù)據(jù)資料 |
| 文件頁數(shù)： | 6/9頁 |
| 文件大?。?/td> | 110K |
| 代理商： | BW0406X_LGISDN |
SEC ASIC
BW0404X
Sigma-Delta ADC
ANALOG
Embedded core evaluation example
CORE Layout Guide
Left VDDA and right VDDA are tied to one PAD separately.
Left VSSA and right VSSA are tied to one PAD separately.
Example
ü
ü
ü
CORE
PAD
Metal
NOTE
1. The layout of bw0404x consists of digital part and analog part.
The digital part
and the analog part must be divided.
2. The substrate of digital and analog part is seperated from digital and analog ground so that it can minimize noise through substrate.
3. It is recommended that you use thick analog power metal. when connecting to PAD, and the path should
be kept as short as possible.
4. Digital power and analog power are used separately.
5. When
the core block is connected to other blocks, it must be double guardring using N-well and P+active to remove the substrate and
coupling noise.
In that case, the power metal should be connected to PAD directly.
6. Digital input signal lines must be same length to reduce
the difference of delay.
DSP Block
BW0404X
SDOUT
OPS
BCK
FS
VREF
INSE
INN
SDOUT
OPS
RSEL
BCK
FS
On-Chip
1uF
RSEL
PDOUT
330K
INSE
100K
56pF
56pF
100K
1uF
437K
INN
68K
56pF
1uF
437K
INP
INP
220K
OUT
PWDN
PWDN
MCLK
MCLK
PDOUT
External PAD
; For BW0404X Test
1uF
RST
RST
6/8
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