D Operates on telephone lines, integrated reference voltage regulation D Output power: 100 mW at a 25-Ω load with peak limitation D Linear volume control D Monitoring s.

The voice switched speakerphone integrated circuit, U4080B, incorporates a variety of functions (see below). The versality of the device is further enhanced by the provision of a large number of pins giving access to internal circuit points. Feature.

U4082B

U4083

U4083B

U4087B

U401

U402

U403

U4030B

U404

U405

U4050B

U4055B

U4055B1