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參數(shù)資料
| 型號： | CDB42438 |
| 廠商： | Cirrus Logic, Inc. |
| 元件分類： | Codec |
| 英文描述： | 108 dB, 192 kHz 4-in, 6-out TDM CODEC |
| 中文描述： | 108分貝192千赫4 - 6 -出的TDM編解碼器 |
| 文件頁數(shù)： | 37/62頁 |
| 文件大?。?/td> | 1004K |
| 代理商： | CDB42438 |
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DS673PP2
37
The delta-sigma modulators settle in a matter of microseconds after the analog section is powered, either
through the application of power or by setting the RST pin high. However, the voltage reference will take
much longer to reach a final value due to the presence of external capacitance on the FILT+ pin. A time
delay of approximately 400 ms is required after applying power to the device or after exiting a reset state.
During this voltage reference ramp delay, all serial ports and DAC outputs will be automatically muted.
5.10
As with any high resolution converter, the CS42432 requires careful attention to power supply and ground-
ing arrangements if its potential performance is to be realized. Figures 1 to 2 show the recommended
power arrangements, with VA connected to clean supplies. VD, which powers the digital circuitry, may be
run from the system logic supply.
Extensive use of power and ground planes, ground plane fill in unused areas and surface mount decou-
pling capacitors are recommended. Decoupling capacitors should be as near to the pins of the CS42432
as possible. The low value ceramic capacitor should be the nearest to the pin and should be mounted on
the same side of the board as the CS42432 to minimize inductance effects. All signals, especially clocks,
should be kept away from the FILT+, VQ pins in order to avoid unwanted coupling into the modulators.
The FILT+ and VQ decoupling capacitors, particularly the 0.1 μF, must be positioned to minimize the elec-
trical path from FILT+ and AGND. The CDB42438 evaluation board demonstrates the optimum layout and
power supply arrangements.
For optimal heat dissipation from the package, it is recommended that the area directly under the part be
filled with copper and tied to the ground plane. The use of vias connecting the topside ground to the back-
side ground is also recommended.
Power Supply, Grounding, and PCB layout
相關PDF資料 |
PDF描述 |
|---|---|
| CDB42448 | 108 dB, 192 kHz 6-in, 8-out CODEC |
| CDB4245 | 105 dB, 24-Bit, 192 kHz Streo Sudio CODEC |
| CDB42518 | 110 dB, 192 kHz 6-Ch Codec with S/PDIF Receiver |
| CDB42528 | 114 dB, 192 kHz 6-Ch Codec with S/PDIF Receiver |
| CDB4270 | 24-Bit, 192 kHz Stereo Audio CODEC |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| CDB4244 | 制造商:Cirrus Logic 功能描述:EVAL BD 4 INPUT/ 4 OUTPUT CODEC - Boxed Product (Development Kits) 制造商:Cirrus Logic 功能描述:Eval Board |
| CDB42448 | 功能描述:音頻 IC 開發(fā)工具 Eval Bd 108dB 8-Ch Mult-Ch CODEC RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評估:TAS5614L 工作電源電壓:12 V to 38 V |
| CDB4245 | 功能描述:音頻 IC 開發(fā)工具 Eval Bd 192kHz CODEC w/PGA & Input Mux RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評估:TAS5614L 工作電源電壓:12 V to 38 V |
| CDB42518 | 功能描述:音頻 IC 開發(fā)工具 Eval Bd RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評估:TAS5614L 工作電源電壓:12 V to 38 V |
| CDB42528 | 功能描述:音頻 IC 開發(fā)工具 Eval Bd RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評估:TAS5614L 工作電源電壓:12 V to 38 V |
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