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參數(shù)資料
型號： W682510
廠商： WINBOND ELECTRONICS CORP
元件分類： Codec
英文描述： DUAL-CHANNEL VOICEBAND CODECS
中文描述： 雙通道聲帶編解碼器
文件頁數(shù)： 8/35頁
文件大小： 1310K
代理商： W682510
W682510/W682310
7. FUNCTIONAL DESCRIPTION
W682510/W682310 is a single-rail, dual channel PCM CODEC for voiceband applications. The
CODEC complies with the specifications of the ITU-T G.712 recommendation. The CODEC includes
two complete
μ
-Law and A-Law companders. The
μ
-Law and A-Law companders are designed to
comply with the specifications of the ITU-T G.711 recommendation.
The block diagram in section 3 shows the main components of the W682510/W682310. The chip
consists of a PCM interface, which can process the data in parallel or serial formats. The PLL 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.
8
8 bit
μ
/A
-
Law
DAC
Control
Control
T1
8
8 bit
μ
/A
-
Law
ADC
Control
8
Control
8
μ
/A
-
8 bit
μ
/A
-
Law
DAC
RO1
-
+
Smoothing
Filter 1b
f
C
= 3400 Hz
Filter 1a
Smoothing
Buffer1
Av=1
DATA
R1
μ
/A
-
RO2
-
+
Smoothing
Filter 2b
f
C
= 3400 Hz
Filter 2a
Smoothing
Buffer2
Av=1
DATA
R2
μ
/A
-
AI2
AO2
-
-
+
Aliasin
Anti
-
Filter 2b
Aliasin
f
C
= 3400 Hz
Filter 2a
Anti
-
f
C
= 200 Hz
Filter
High Pass
8 bit
μ
/A
-
Law
ADC
DATA
T2
μ
/A
-
AI1
AO1
-
-
+
Aliasin
Anti
-
Filter 1b
Aliasin
f
C
= 3400 Hz
Filter 1a
Anti
-
f
C
= 200 Hz
Filter
High Pass
DATA
T1
FIGURE 7.1: THE W682510 AND W682310 SIGNAL PATH
7.1. T
RANSMIT
P
ATH
The A-to-D path of the CODEC contains an analog input amplifier with externally configurable gain
setting (see application examples in section 11). The transmit amplifier output is the input to the
encoder section.
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-
- 8 -
相關(guān)PDF資料
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
W682510_05 制造商:WINBOND 制造商全稱:Winbond 功能描述:DUAL-CHANNEL VOICEBAND CODECS
W682510DK 功能描述:KIT DEVELOPMENT FOR W682510 RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 評估演示板和套件 系列:- 標(biāo)準(zhǔn)包裝:1 系列:PSoC® 主要目的:電源管理，熱管理 嵌入式:- 已用 IC / 零件:- 主要屬性:- 次要屬性:- 已供物品:板，CD，電源
W682510E 功能描述:IC VOICEBAND CODEC 5V 2CH 20DIP RoHS:否 類別:集成電路 (IC) >> 接口 - 編解碼器 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- 類型:立體聲音頻 數(shù)據(jù)接口:串行 分辨率（位）:18 b ADC / DAC 數(shù)量:2 / 2 三角積分調(diào)變:是 S/N 比，標(biāo)準(zhǔn) ADC / DAC (db):81.5 / 88 動態(tài)范圍，標(biāo)準(zhǔn) ADC / DAC (db):82 / 87.5 電壓 - 電源，模擬:2.6 V ~ 3.3 V 電壓 - 電源，數(shù)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(yīng)商設(shè)備封裝:48-TQFN-EP（7x7） 包裝:帶卷 (TR)
W682510EG 功能描述:IC VOICEBAND CODEC 5V 2CH 20DIP RoHS:是 類別:集成電路 (IC) >> 接口 - 編解碼器 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- 類型:立體聲音頻 數(shù)據(jù)接口:串行 分辨率（位）:18 b ADC / DAC 數(shù)量:2 / 2 三角積分調(diào)變:是 S/N 比，標(biāo)準(zhǔn) ADC / DAC (db):81.5 / 88 動態(tài)范圍，標(biāo)準(zhǔn) ADC / DAC (db):82 / 87.5 電壓 - 電源，模擬:2.6 V ~ 3.3 V 電壓 - 電源，數(shù)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(yīng)商設(shè)備封裝:48-TQFN-EP（7x7） 包裝:帶卷 (TR)
W682510R 功能描述:IC VOICEBAND CODEC 5V 2CH 20SSOP RoHS:否 類別:集成電路 (IC) >> 接口 - 編解碼器 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- 類型:立體聲音頻 數(shù)據(jù)接口:串行 分辨率（位）:18 b ADC / DAC 數(shù)量:2 / 2 三角積分調(diào)變:是 S/N 比，標(biāo)準(zhǔn) ADC / DAC (db):81.5 / 88 動態(tài)范圍，標(biāo)準(zhǔn) ADC / DAC (db):82 / 87.5 電壓 - 電源，模擬:2.6 V ~ 3.3 V 電壓 - 電源，數(shù)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(yīng)商設(shè)備封裝:48-TQFN-EP（7x7） 包裝:帶卷 (TR)
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