MSM7543 Datasheet, PDF (1/19 Pages) OKI electronic componets – Single Rail CODEC

E2U0015-28-81
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MSM7543/7544
Single Rail CODEC
This versi_Mon_S:_MA₇u₅g₄.₃1_/9₇9₅8₄₄
Previous version: Nov. 1996
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:
20 mW Typ.
Power save mode: 4.5 mW Typ.
Power down mode: 1.5 mW Typ.
• ITU-T Companding law
31.5 mW Max.
8 mW Max.
3 mW Max.
V_DD = 5 V
V_DD = 5 V
V_DD = 5 V
MSM7543: m-law
MSM7544: 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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