MSM7543 Overview
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.
MSM7543 Key Features
- Single power supply: +5 V ± 5%
- ITU-T panding law MSM7543: m-law MSM7544: A-law
- The transmission characteristics of the devices ply 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