UBA1706 - NXP

UBA1706 Cordless telephone line interface

plastic shrink small outline package; 24 leads; body width 5.3 mm APPLICATIONS • Cordless base stations UBA1706 • Mains or battery-powered telephone sets. GENERAL DESCRIPTION The UBA1706 is a BiCMOS integrated circuit intended for use in mains-powered telecom terminals. It performs all speech and line interface functions, DC mask for voltage or current reg.

Features

Line interface
• Low DC line voltage; operates down to 1.2 V (excluding polarity guard)
• Voltage regulator with adjustable DC voltage
• DC mask for voltage or current regulation (CTR21)
• Line current limitation for protection
• Electronic hook switch control input
• Transmit amplifier with:
  – Symmetrical inputs
  – Fixed gain
  – Large signal handling capability.
• Receive amplifier with fixed gain
• Transmit and receive amplifiers Automatic Gain Control (AGC) for line loss compensation. General purpose switches Two switches with open-collector. 3-wire serial bus interface Allows control of:
• D.