BA6566F

Communication ICs Speech network BA6566 / BA6566F / BA6566FP The BA6566, BA6566F, and BA6566FP are speech network ICs which possess the basic functions required for handset communications. In addition to amplifying signals from a transmitter and sending them to a telephone line, they amplify only reception signals from a telephone line and drive the receiver. They also compensate for fluctuation in the volume at which signals are transmitted and received, caused by the length of the telephone line (AGC). FApplications Telephones and telephone equipment FFeatures 1) Can accommodate both dynamic and piezoelectric receivers, simply by changing the circuit constant for a wide dynamic reception range. 2) Automatic gain control (AGC) is used, based on the transmission and reception telephone line current, for easier compliance with communications standards. FBlock diagram 3) Erroneous operation caused by high-frequency electrical wave interference is minimized. 4) An HSOP package is used, eliminating the need for an attached transistor to dissipate heat. This means that a common circuit can be shared when a DIP package is used (BA6566FP). 217 Communication ICs FAbsolute maximum ratings (Ta=25_C) BA6566 / BA6566F / BA6566FP 218 Communication ICs FElectrical characteristics (Ta=25_C) BA6566 / BA6566F / BA6566FP 219 Communication ICs BA6566 / BA6566F / BA6566FP 220 Communication ICs FMeasurement circuits BA6566 / BA6566F / BA6566FP 221 Communication ICs BA6566 / BA656...