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MSM7731

型号：MSM7731
品牌：OKI

批号：13+RoHS
封装：QFP
原价：42
数量：68789
PDF电子文档：

订购电话：86755-83294757
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备注：全新原装正品现货(New and original in stock)

详细描述

MSM7731-02 - Dual Echo Canceler & Noise Canceler with Dual Codec for Hands-Free - OKI electronic componets

FEATURES

• Single 3 V Power Supply Operation (2.7 to 3.6 V)

• Built-in 2-channel (line and acoustic) echo canceler

Echo attenuation : 35 dB (typ.) for white noise

Cancelable echo delay time :

Line echo canceler + acoustic echo canceler : Tlined = 27 ms (max.)

Tacoud = 59 ms – Tlined (max.)

Acoustic echo canceler only : Tacoud = 59 ms (max.)

• Built-in transmission signal noise canceler

Noise attenuation : 17 dB (typ.) for white noise

40 dB (typ.) for single tone

• Built-in 2-channel CODEC

Synchronous transmission and reception enables full duplex operation

• Built-in analog input gain amp stage (max. gain = 30 dB)

• Analog output configuration : Push-pull drive (can drive a 1.2 kΩ load)

• Built-in transmit slope filter

• Digital interface coding formats : µ-law PCM, 16-bit linear (2's complement)

• Digital interface sync formats : Normal-sync, short-frame-sync

• Built-in digital transmission clock generators

Sync clock (SYNC) : 8 kHz output

Transmission clock (BCLK) : 64 kHz output (µ-law PCM)/128 kHz output (16-bit linear)

• Digital transmission rate

External input : 64 to 2048 kbps

Internal generation : 64 kbps (µ-law PCM)/128 kbps (16-bit linear)

• Fixed digital interface sync clock (SYNC) enables automatic power-down

• Master clock frequency : 19.2 MHz

Compatible with crystal oscillator and crystal

• Low power consumption

Operating mode : typ. 35 mA (when VDD = 3.0 V in a silent mode)

Power down operation : typ. 0.02 mA (when VDD = 3.0 V in a silent mode)

• Control by both the serial microcomputer interface and parallel port is possible

• Transmit/receive mute function, transmit/receive programmable gain setting

• Package : 64-pin plastic QFP (QFP64-P-1414-0.80-BK)(Product name: MSM7731-02GA)

**注意 & Noted:

Because of wholesale price is different from sample price, our website cannot state. Please contact us online. As well as welcome you call us : 0755-83957301.We will offer a right price; Sometimes manufacturer's price is unstable, so we don't adjust price in time. if you feel price is a little high for you, just feel free to contact us for consultation. Thank you for your support !

由于批量与样品的价格不同，网上无法统一注明，请您把采购型号通过邮件或客服QQ2850151584发给我们，也可致电明佳达国内销售部：0755-83957301，由客服人员为您报价；有时元件厂商价格稍许变动，本公司未能及时调整，如您觉得售价偏高，请与我们说明并适当议价；感谢支持!

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