MSM7544

更新时间： 2024-11-24 22:51:07

品牌	Logo	应用领域
冲电气 - OKI		/
页数	文件大小	规格书
19页	160K
描述
Single Rail CODEC

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数据手册

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MSM7544 数据手册

E2U0015-28-81

This version: Aug. 1998

Previous version: Nov. 1996

¡ Semiconductor

MSM7543/7544

¡ Semiconductor

MSM7543/7544

Single Rail CODEC

GENERAL DESCRIPTION

The MSM7543 and MSM7544 are single-channel CODEC CMOS ICs for voice signals ranging

from 300 to 3400 Hz. These devices contain filters for A/D and D/A conversion.

Designed especially for a single-power supply and low-power applications, these devices are

optimized for telephone terminals in digital wireless systems, ISDN terminals, and digital PBXs.

The MSM7543 and MSM7544 use newly-designed operational amplifiers to keep small current

deviations caused by power voltage fluctuations.

The devices use the same transmission clocks as those used in the MSM7508B and MSM7509B.

The analog output signal, which is of a differential type and can drive a 600 W load, can directly

drive a handset receiver.

FEATURES

• Single power supply: +5 V ±5%

• Low power consumption

Operating mode:

Power save mode:

Power down mode:

• ITU-T Companding law

20 mW Typ.

4.5 mW Typ.

1.5 mW Typ.

31.5 mW Max.

8 mW Max.

3 mW Max.

= 5 V

MSM7543:

MSM7544:

m-law

A-law

• The transmission characteristics of the devices comply with ITU-T G.714

• Built-in PLL eliminates a master clock

• Serial data rate: 64/128/256/512/1024/2048 kHz

96/192/384/768/1536/1544 kHz

• Adjustable transmit gain

• Adjustable receive gain

• Built-in reference voltage supply

• Built-in analog loop back test mode

• Differential type analog output. Directly drives a 600 W line transformer

• Package options:

20-pin plastic skinny DIP (DIP20-P-300-2.54-S1) (Product name : MSM7543RS)

(Product name : MSM7544RS)

24-pin plastic SOP (SOP24-P-430-1.27-K)

(Product name : MSM7543GS-K)

(Product name : MSM7544GS-K)

26-pin plastic TSOP (TSOPII26/20-P-300-1.27-K) (Product name : MSM7543TS-K)

(Product name : MSM7544TS-K)

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与MSM7544相关器件

型号	品牌	获取价格	描述	数据表
MSM7544GS	OKI	获取价格	PCM Codec, A-Law, 1-Func, PDSO24, 0.430 INCH, PLASTIC, SOP-24
MSM7544GS-K	OKI	获取价格	暂无描述
MSM7544GS-VK	OKI	获取价格	PCM Codec, A-Law, 1-Func, PDSO24, 0.430 INCH, PLASTIC, SOP-24
MSM7545	OKI	获取价格	LSI
MSM7547	OKI	获取价格	Voice Signal Level Control LSI
MSM7547MS-K	OKI	获取价格	Voice Signal Level Control LSI
MSM7555GS-2K	OKI	获取价格	Modem, 2.4kbps Data, PQFP56, 9 X 10 MM, PLASTIC, QFP-56
MSM7557	OKI	获取价格	Single Chip MSK Modem with Compandor for Cordless Telephone
MSM7557GS-2K	OKI	获取价格	Modem, 2.4kbps Data, PQFP56, 9 X 10 MM, 0.65 MM PITCH, PLASTIC, QFP-56
MSM7560	OKI	获取价格	Single Rail ADPCM CODEC