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UBA1702 Datasheet(PDF) 2 Page - NXP Semiconductors |
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UBA1702 Datasheet(HTML) 2 Page - NXP Semiconductors |
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2 / 24 page  1997 Sep 29 2 Philips Semiconductors Product specification Line interrupter driver and ringer UBA1702; UBA1702A FEATURES Speech part • Driver for the line interrupter that can be either a PMOST when 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. Ringer part • Over-voltage protection • Ringer frequency output for frequency discrimination • Adjustable ringer threshold for piezo-driver enable • Three bits ringer volume control • Bridge-tied-load (BTL) output stage for piezo transducer • Fast start-up microcontroller supply. Miscellaneous • Separated ground pins for transmission circuit interface and control signals (e.g. for TEA1064A) • Possibility to supply the microcontroller with an external voltage source. APPLICATIONS • Telephone sets with software controlled ringer function • Telephone sets with electronic hook switch. 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. The UBA1702; UBA1702A incorporates several protections, a driver for the line interrupter and a ringer. Because of the practical division of functions between the microcontroller, the transmission circuit and the UBA1702; UBA1702A, it is possible to have a higher integration level thereby reducing significantly the number of discrete components in a telephone set. ORDERING INFORMATION TYPE NUMBER PACKAGE NAME DESCRIPTION VERSION UBA1702 DIP28 plastic dual in-line package; 28 leads (600 mil) SOT117-1 UBA1702A DIP28 plastic dual in-line package; 28 leads (600 mil) SOT117-1 UBA1702T SO28 plastic small outline package; 28 leads; body width 7.5 mm SOT136-1 UBA1702AT SO28 plastic small outline package; 28 leads; body width 7.5 mm SOT136-1 |
Similar Part No. - UBA1702 |
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Similar Description - UBA1702 |
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