NXP Semiconductors UBA1702
UBA1702 is used or a PNP when UBA1702A is used • Adjustable over-current protection • Adjustable over-voltage protection for transmission circuit • Adjustable mute (dialling mode voltage; DMO or NSA) • Adjustable current loop detection (hook switch status) • Microcontroller supply • Provision for electronic hook switch. for TEA1064A) • Possibility to supply the microcontroller with an external voltage source. GENERAL DESCRIPTION The UBA1702; UBA1702A performs the high voltage interface and ringer functions of the corded analog telephone set in close cooperation with a microcontroller and transmission circuit.