描述 Description

The MT91L60/61 3V Multi-featured Codec incorporates a built-in Filter/Codec, gain control and

programmable sidetone path as well as on-chip anti-alias filters, reference voltage and bias source. The device supports both ITU-T and sign- magnitude A-Law and μ-Law requirements. The MT91L60/61 is a true 3V device employing a fully differential architecture to ensure wide dynamic range.

特性 Features

? Single 2.7-3.6 volt supply operation

? MT91L61 version features a delayed framing pulse in SSI and ST-BUS modes to facilitate

cascaded devices

? Programmable μ-Law/A-Law Codec and Filters

? Programmable ITU-T (G.711)/sign-magnitude coding

? Programmable transmit, receive and side-tone gains

? Fully differential interface to handset transducers - including 300 ohm receiver driver

? Flexible digital interface including ST-BUS/SSI

? Serial microport

? Low power operation

? ITU-T G.714 compliant

? Multiple power down modes

Applications

? Battery operated equipment

? Digital telephone sets

? Cellular radio sets

? Local area communications stations

? Pair Gain Systems

? Line cards