- 您現在的位置：買賣IC網 > PDF目錄363893 > W6811 (WINBOND ELECTRONICS CORP) 2-WIRE FIELD PROGRAMMABLE W/TIN PLATING PDF資料下載
參數資料
| 型號： | W6811 |
| 廠商： | WINBOND ELECTRONICS CORP |
| 英文描述： | 2-WIRE FIELD PROGRAMMABLE W/TIN PLATING |
| 中文描述： | 單通道聲帶編解碼器 |
| 文件頁數： | 10/37頁 |
| 文件大?。?/td> | 457K |
| 代理商： | W6811 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁當前第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁
W6811
- 10 -
AI+
Input Amplifier
Input
V
DDA
1.2 to V
DDA
-1.2
V
SSA
Powered Down
AO
Powered Up
AI+, AI-
Powered Down
AI-
Table 7.1 Input Amplifier Modes of operation
When the input amplifier is powered down, the input signal at AO or AI- needs to be referenced to the
analog ground voltage V
AG
.
The output of the input amplifier is fed through a low-pass filter to prevent aliasing at the switched
capacitor 3.4 kHz low pass filter. The 3.4 kHz switched capacitor low pass filter prevents aliasing of
input signals above 4 kHz, due to the sampling at 8 kHz. The output of the 3.4 kHz low pass filter is
filtered by a high pass filter with a 200 Hz cut-off frequency. The filters are designed according to the
recommendations in the G.712 ITU-T specification. From the output of the high pass filter the signal is
digitized. The signal is converted into a compressed 8-bit digital representation with either
μ
-Law or A-
Law format. The
μ
-Law or A-Law format is pin-selectable through the
μ
/A-Law pin. The compression
format can be selected according to Table 7.2.
μ
/A-Law Pin
Format
V
SSA
V
DDA
A-Law
μ
-Law
Table 7.2. Pin-selectable Compression Format
The digital 8-bit
μ
-Law or A-Law samples are fed to the PCM interface for serial transmission at the
sample rate supplied by the external frame sync FST.
7.2. R
ECEIVE
P
ATH
The 8-bit digital input samples for the D-to-A path are serially shifted in by the PCM interface and
converted to parallel data bits. During every cycle of the frame sync FSR, the parallel data bits are fed
through the pin-selectable
μ
-Law or A-Law expander and converted to analog samples. The mode of
expansion is selected by the
μ
/A-Law pin as shown in Table 7.2. The analog samples are filtered by a
low-pass smoothing filter with a 3.4 kHz cut-off frequency, according to the ITU-T G.712 specification.
A sin(x)/x compensation is integrated with the low pass smoothing filter. The output of this filter is
buffered to provide the receive output signal RO-. The RO- output can be externally connected to the
PAI pin to provide a differential output with high driving capability at the PAO+ and PAO- pins. By
using external resistors (see section 11 for examples), various gain settings of this output amplifier
can be achieved. If the transmit power amplifier is not in use, it can be powered down by connecting
PAI to V
DDA
.
相關PDF資料 |
PDF描述 |
|---|---|
| W6811IE | 2-WIRE FIELD PROGRAMMABLE W/TIN PLATING |
| W6811IR | SEE A1184LLHLT-T |
| W6811IS | 2-WIRE FIELD PROGRAMMABLE W/TIN PLATING |
| W6811IW | 2-WIRE FIELD PROGRAMMABLE W/TIN PLATING |
| W681310 | 3V SINGLE-CHANNEL VOICEBAND CODEC |
相關代理商/技術參數 |
參數描述 |
|---|---|
| W6811_05 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:SINGLE-CHANNEL VOICEBAND CODEC |
| W6811DK | 功能描述:KIT DEVELOPMENT FOR W6811 RoHS:否 類別:編程器，開發系統 >> 評估演示板和套件 系列:- 產品培訓模塊:Obsolescence Mitigation Program 標準包裝:1 系列:- 主要目的:電源管理，電池充電器 嵌入式:否 已用 IC / 零件:MAX8903A 主要屬性:1 芯鋰離子電池 次要屬性:狀態 LED 已供物品:板 |
| W6811IE | 功能描述:IC VOICEBAND CODEC 5V/3V 24DIP RoHS:否 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) |
| W6811IEG | 功能描述:IC VOICEBAND CODEC 5V/3V 24DIP 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) |
| W6811IR | 功能描述:IC VOICEBAND CODEC 5V/3V 24SSOP RoHS:否 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) |
發布緊急采購，3分鐘左右您將得到回復。