UBA1707 - NXP

UBA1707 Cordless telephone / answering machine line interface

plastic small outline package; 28 leads; body width 7.5 mm plastic shrink small outline package; 28 leads; body width 5.3 mm • AGC: – On/off – Slope – Istart line current. • Auxiliary amplifier mute function • Loudspeaker channel: – Input selection – Volume setting – Dynamic limiter inhibition – Power-down mode. • General purpose switches state • Global powe.

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 (CTR 21)
• Line current limitation for protection
• Electronic hook switch control input
• Transmit amplifier with:
  – Symmetrical inputs
  – Fixed gain
  – Large signals handling capability.
• Receive amplifier with fixed gain
• Transmit and receive amplifiers AGC for line loss compensation. Auxiliary amplifier
• Fixed gain. Loudspeaker channel
• Dual inputs
• Rail-to-rail output stage for single-ended load drive
• High ou.