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參數資料
| 型號： | W682388 |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | Codec |
| 英文描述： | Pro-X⑩ CODEC Layout Guideline |
| 中文描述： | 親X⑩編解碼器布局指南 |
| 文件頁數： | 1/8頁 |
| 文件大小： | 361K |
| 代理商： | W682388 |
W682388 Layout Guideline Rev 1.3
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AN-CS006a
W682388 Pro-X CODEC Layout Guideline
1. W682388 Layout Considerations
The Winbond W682388 Pro-X
CODEC family is an excellent solution for short loop telephony
applications. Place the components carefully to insure best performance. This document outlines critical
component layout issues. Use it together with the W682388
data sheet and other supporting Pro-X
application notes.
The W682388 will exhibit high-quality low-noise performance with the appropriate layout design. Pins
52–61 are sensitive current input pins that are susceptible to induced noise. Keep traces between these
pins and their respective components (C7, C8, C10, C11, R13–16, and R18–27) to a minimum length. Do
not route any digital traces near these sensitive traces.
Place the line compensation capacitors, C5, C8, C9, and C12, near their respective TIP and RING output
pins. Place a 0.1 μF ceramic decoupling capacitor as close as possible to each VDD and VBAT power
supply input pin. These are Pin 49 (VDD1), Pin 64 (VDD2), Pin 41 (VDD3), Pin 8 (VDD4), Pin 27 (VDD5)
and Pin 26 (VDDL). Replace the 0.1 μF capacitors at VDD1 and VDD2 with 10 μF ceramic capacitors for
additional noise performance. Refer to the Figure 3 for an example of this layout.
There are two external Tip and Ring capacitors for each channel. They are connected to CT1 (Pin 39), CR1
(Pin 38), CT2 (Pin 10), and CR2 (Pin 11). The capacitor is a 10 μF ceramic (low leakage) capacitor. It is
connected to 3.3V. Route the capacitors directly to the appropriate VDD pin. For example, the CT1 and
CR1 capacitors connect directly to their respective pins. Their shared 3.3V connection is routed directly to
VDD1 before connecting to the main 3.3V supply. The situation is the same for CT2 and CR2, which must
terminate at VDD2.
The AFE transistors QR3/QT3 (SOT-223) and QR1/QT1 (SOT-89) should have exposed copper pads to
help reduce the thermal resistance of these components. The amount of copper used for the heat sink in
combination with the surface area of the PCB will improve the heat dissipation of the transistor package.
One way to increase the copper area when board space is limited is to connect the pad used for the heat
sink by using multiple layers. A top and bottom side can be used with multiple vias connecting them
together. The optimal copper area to heat sink a SOT-223 is 1 sq inch. This approach is similar to heat
sinking used for the QFN package. (Refer to Section 4 on QFN grounding)
Place the resistors for IREF (Pin 13) and the transconductance amplifiers (Pins 3,5,44 and 46) as close as
possible to the part to minimize the trace length. These resistors are R29, R30 and R31.
If more than two layers are used for the overall board circuit, separate analog and digital trace layers may
enhance performance. Digital signals are best applied to a dedicated layer. The ideal approach is to
separate digital layers from analog layers by a power/ground plane.
AN-CS006a_W682388 PCB Layout.doc
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相關代理商/技術參數 |
參數描述 |
|---|---|
| W682388_1 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:Dual Programmable Extended CODEC/SLIC |
| W682388DG | 功能描述:IC PROG DUAL CODEC/SLCC 64-LQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 編解碼器 系列:- 標準包裝:2,500 系列:- 類型:立體聲音頻 數據接口:串行 分辨率（位）:18 b ADC / DAC 數量:2 / 2 三角積分調變:是 S/N 比，標準 ADC / DAC (db):81.5 / 88 動態范圍，標準 ADC / DAC (db):82 / 87.5 電壓 - 電源，模擬:2.6 V ~ 3.3 V 電壓 - 電源，數字:1.7 V ~ 3.3 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-WFQFN 裸露焊盤 供應商設備封裝:48-TQFN-EP（7x7） 包裝:帶卷 (TR) |
| W682388DG TR | 功能描述:IC PROG DUAL CODEC/SLCC 64-LQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 編解碼器 系列:- 標準包裝:2,500 系列:- 類型:立體聲音頻 數據接口:串行 分辨率（位）:18 b ADC / DAC 數量:2 / 2 三角積分調變:是 S/N 比，標準 ADC / DAC (db):81.5 / 88 動態范圍，標準 ADC / DAC (db):82 / 87.5 電壓 - 電源，模擬:2.6 V ~ 3.3 V 電壓 - 電源，數字:1.7 V ~ 3.3 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-WFQFN 裸露焊盤 供應商設備封裝:48-TQFN-EP（7x7） 包裝:帶卷 (TR) |
| W682388EVB | 功能描述:KIT EVAL FOR W682388 RoHS:否 類別:編程器，開發系統 >> 過時/停產零件編號 系列:- 標準包裝:1 系列:- 傳感器類型:CMOS 成像，彩色（RGB） 傳感范圍:WVGA 接口:I²C 靈敏度:60 fps 電源電壓:5.7 V ~ 6.3 V 嵌入式:否 已供物品:成像器板 已用 IC / 零件:KAC-00401 相關產品:4H2099-ND - SENSOR IMAGE WVGA COLOR 48-PQFP4H2094-ND - SENSOR IMAGE WVGA MONO 48-PQFP |
| W682388YG | 功能描述:IC PROG DUAL CODEC/SLCC 64-QFN RoHS:是 類別:集成電路 (IC) >> 接口 - 編解碼器 系列:- 標準包裝:2,500 系列:- 類型:立體聲音頻 數據接口:串行 分辨率（位）:18 b ADC / DAC 數量:2 / 2 三角積分調變:是 S/N 比，標準 ADC / DAC (db):81.5 / 88 動態范圍，標準 ADC / DAC (db):82 / 87.5 電壓 - 電源，模擬:2.6 V ~ 3.3 V 電壓 - 電源，數字:1.7 V ~ 3.3 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-WFQFN 裸露焊盤 供應商設備封裝:48-TQFN-EP（7x7） 包裝:帶卷 (TR) |
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