1.8 to 5.5 V BIAS, 80 MHz to 550 MHz DUAL PLL FREQUENCY SYNTHESIZER

LSI FOR CORDLESS TELEPHONES AND PORTABLE CELLULAR RADIO

FEATURES

• Supply voltage: VCC1 = VCC2 = 1.8 to 5.5 V

• Input operating frequency: fin = 80 MHz to 550 MHz (PLL 1ch, 2ch in common)

• Reference oscillating frequency fref = 30 MHz MAX.. Built-in high-speed reference oscillator signal can be taken out from the

buffer amplifier output pin.

• Built-in power-save function: control 2 prescaler’s ON/OFF operation individually.