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參數資料
型號: W681360S
廠商: WINBOND ELECTRONICS CORP
元件分類: 編解碼器
英文描述: 3V SINGLE-CHANNEL 13-BIT LINEAR VOICE-BAND CODEC
中文描述: MU-LAW, LINEAR CODEC, PDSO20
封裝: 0.300 INCH, PLASTIC, SOP-20
文件頁數: 8/34頁
文件大小: 348K
代理商: W681360S
W681360
Publication Release Date: September 2005
- 8 -
Revision A.2
7. FUNCTIONAL DESCRIPTION
W681360 is a single-rail, single channel PCM CODEC for voiceband applications. The CODEC
complies with the specifications of the ITU-T G.712 recommendation.
The CODEC block diagram in Section 3 illustrates the main components of the W681360. The chip
consists of a PCM interface, which can process long and short frame sync formats. The pre-scaler of
the chip provides the internal clock signals and synchronizes the CODEC sample rate with the
external frame sync frequency. The power conditioning block provides the internal power supply for
the digital and the analog section, while the voltage reference block provides a precision analog
ground voltage for the analog signal processing.
The calibration level for both the Analog to Digital Converter (ADC) and the Digital to Analog
Converter (DAC) is referenced to
μ
-Law with the same bit voltage weighing about the zero crossing,
resulting in the 0dBm0 calibration level 3.2dB below the peak sinusoidal level before clipping, Based
on the reference voltage of 0.886V the calibration level is 0.436 Vrms or –5dBm at 600
.
13
Bypass
DAC
Filter b
Filter a
Av=1
Receive
RO-
13
AI-
AO
-
+
Filter b
Filter a
Filter
ADC
Transmit
AI+
PAI
PAO+
+
-
PAO-
-
+
VAG
High Pass
13 bit linear
Smoothing
f
C
= 3400 Hz
Smoothing
Buffer1
DATA
Anti-Aliasing
f
C
= 3400 Hz
Anti-Aliasing
f
C
= 200 Hz
High Pass
13 bit linear
DATA
FIGURE 7.1: THE W681360 SIGNAL PATH
7.1. Transmit Path
The first stage of the A-to-D path of the CODEC is an analog input operational
amplifier with externally configurable gain settings. A differential analog input may be
applied to the Inputs AI+ and AI-. Alternately the input amplifier may be powered
down and a single-ended input signal can be applied to either the AO pin or the AI-
pin. The input amplifier can be powered down by connecting the AI+ pin to either V
DD
or V
SS
which also determines whether AO or AI+ is selected as input according to
相關PDF資料
PDF描述
W681360SG 3V SINGLE-CHANNEL 13-BIT LINEAR VOICE-BAND CODEC
W681360W 3V SINGLE-CHANNEL 13-BIT LINEAR VOICE-BAND CODEC
W681360WG 3V SINGLE-CHANNEL 13-BIT LINEAR VOICE-BAND CODEC
W681360YG 3V SINGLE-CHANNEL 13-BIT LINEAR VOICE-BAND CODEC
w681511 SINGLE-CHANNEL VOICEBAND CODEC
相關代理商/技術參數
參數描述
W681360SG 功能描述:IC VOICEBAND CODEC 3V 1CH 20SOP 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)
W681360SG TR 功能描述:IC VOICEBAND CODEC 3V 1CH 20SOP 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)
W681360W 制造商:WINBOND 制造商全稱:Winbond 功能描述:3V SINGLE-CHANNEL 13-BIT LINEAR VOICE-BAND CODEC
W681360WG 功能描述:IC VOICEBND CODEC 3V 1CH 20TSSOP 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)
W681360WG TR 功能描述:IC VOICEBND CODEC 3V 1CH 20TSSOP 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)