Datasheet Summary
March 1996
PBL 3726/18A Universal Speech Circuit
Description
PBL 3726/18A is a standard version of the PBL 3726 family of the mask-programmable, monolithic integrated speech circuits for use in electronic telephones. It is designed for use with a low impedance microphone. Transmitting and receiving gain is regulated with line length. Different regulation for various current feeds can be set by external resistors. Typical current feeds as 48 V, 2 x 200 ohm, 48 V 2 x 400 ohm and 48 V 2 x 800 ohm can be handled. Application dependent parameters such as line balance, side tone level, amplification and frequency response are set by external ponents. Parameters are set independently which...