Design of an analogue transceiver for speech communication systems

The objective of the present design was to create a unified analogue fronte nd for air traffic control systems. The audio tranceiver is capable of dire ctly driving headset earphones together with high capacitive loads. A disti nct feature of the device is a built-in loop-back function allowing for a s elf-test of the signal path. The design was carried out for an Austrian SME and fabricated on a 1.2 mu m CMOS process by AMS. Apart from being an exam ple for a successful co-operation between university and industry, the proj ect is interesting also because it refutes the common prejudice that an ASI C pays off only for high-volume production. (C) 1999 Elsevier Science Ltd. All rights reserved.