Low-Voltage 60MHz Universal Programmable Dual PLL Frequency Synthesizer CMOS

The MC145165 is a low–voltage dual phase–locked loop (PLL) frequency synthesizer especially designed for CT–1 cordless phone applications worldwide. This frequency synthesizer is also for any product with a frequency operation at 60 MHz or below.

This chip is suitable for any portable RF products which use two 1.2 V chargeable Ni–Cd batteries. The feature of low operating voltage can reduce the current consumption and the cost of the portable RF products by reducing the number of batteries used.

• Operating Voltage Range: 1.8 to 3.6 V

• Operating Temperature Range: – 40 to + 75°C

• Operating Power Consumption: 1.5 mA @ 1.8 V

• Maximum Operating Frequency: 60 MHz

• Minimum Input Sensitivity: 60 MHz @ 200 mV p–p, VDD = 1.8 V

• Three or Four Pins Used for Serial MCU Interface

• Built–In MCU Clock Output with Frequency of Reference Oscillator ÷
3/÷
4

• Power Saving Mode Controlled by MCU

• Lock Detect Signal

• On–Chip Reference Oscillator Supports External Crystals to 16.0 MHz

• Reference Frequency Counter Division Range: 16 to 4095

• Auxiliary Reference Frequency Counter Division Range: 16 to 16,383

• Transmit Counter Division Range: 16 to 65,535

• Receive Counter Division Range: 16 to 65,535