BA8216
munication ICs
Speech network for telephones
The BA8216 is a speech network IC which possesses the basic functions required for handset munications. In addition to amplifying signals from a transmitter and sending them to a telephone line, it also amplifies only reception signals from a telephone line and drives the receiver. FApplications Telephones and telephone equipment FFeatures 1) Basic speech network functions built in. S Handset transmit and receive circuits S DTMF transmit circuit S Key tone input circuit S Mute control and side tone masking circuits 2) Can be used with 1.3kΩ loop circuit resistance and 100Ω telephone resistance. FBlock diagram
3) A BTL circuit is used for reception output, providing a wide dynamic range which enables use of a ceramic receiver. 4) Few external ponents required. 5) 14-pin DIP package.
238 munication ICs
FAbsolute maximum ratings (Ta = 25_C)
239 munication ICs
FElectrical characteristics (unless otherwise noted, Ta...
