Datasheet > MSM7557

MSM7557

更新时间： 2022-12-12 11:17:16

品牌	Logo	应用领域
冲电气 - OKI		调制解调器电话
页数	文件大小	规格书
25页	152K
描述
Single Chip MSK Modem with Compandor for Cordless Telephone

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MSM7557 数据手册

E2A0046-16-X1

This version: Jan. 1998

Previous version: Nov. 1996

¡ Semiconductor

MSM7557

¡ Semiconductor

MSM7557

Single Chip MSK Modem with Compandor for Cordless Telephone

GENERAL DESCRIPTION

The MSM7557 is a single chip MSK modem with base band voice processor for cordless telephone.

The MSM7557 voice transmit block consists of high pass filter, compressor, pre-emphasis, limiter

and splatter filter.

Voice receive block consists of Band pass filter, De-emphasis and Expander.

FEATURES

• Available to transmit modem signal and also transmit base band voice signal through wireless

transmission path (0.3 kHz to 3.4 kHz)

• Built-in compandor circuit

• Upper limit of voice band (3306 Hz/3400 Hz/3500 Hz) is selectable

• Modem bit rate (2400/1200 bps) is selectable

• Transmit function and receive function operate separately

• Emphasis mode selectable

• Built-in bit synchronous detector and frame synchronous detector

• Built-in limiter level generator and external limit voltage input

• Dynamic range selectable

• Built-in crystal oscillator circuit

• Wide range power supply voltage (2.7V ~ 5.5V)

• Package :

56-pin plastic QFP

(QFP56-P-910-0.65-2K)(Product name : MSM7557GS-2K)

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型号	品牌	描述	获取价格	数据表
MSM7557GS-2K	OKI	Modem, 2.4kbps Data, PQFP56, 9 X 10 MM, 0.65 MM PITCH, PLASTIC, QFP-56	获取价格
MSM7560	OKI	Single Rail ADPCM CODEC	获取价格
MSM7560GS-K	OKI	ADPCM Codec, MU-Law, 1-Func, PDSO28, PLASTIC, SOP-28	获取价格
MSM7560L	OKI	Single Rail ADPCM CODEC	获取价格
MSM7560LGS-K	OKI	ADPCM Codec, MU-Law, 1-Func, PDSO28, PLASTIC, SOP-28	获取价格
MSM7560LTS-K	OKI	暂无描述	获取价格