INTEGRATED CIRCUITS
DATA SHEET
UBA2050(A); UBA2051(A;C) One-chip telephone ICs with speech, dialler and ringer functions
Product specification Supersedes data of 1998 Mar 24 File under Integrated Circuits, IC03 2000 May 19
Philips Semiconductors
Product specification
One-chip telephone ICs with speech, dialler and ringer functions
FEATURES Speech/transmission part • Low DC line voltage; operates down to 1.
45 V (excluding voltage drop over external polarity guard) • Line voltage
regulator with adjustable DC voltage • Regulated 3.
3 V supply (VDD) for the dialler part and peripherals compatible with: – Speech mode – Ringer mode – Trickle mode.
• Unregulated supply (VCC) for the transmission ...