2·7GHz I2C Bus Low Phase Noise Synthesiser

The SP5659 is a single chip frequency synthesiser designed for tuning systems up to 2·7GHz.

The RF preamplifier drives a divide-by two prescaler which can be disabled for applications up to 2GHz, allowing direct interfacing with the programmable divider, resulting in a step size equal to the comparison frequency. For applications up to 2·7GHz the divide-by two is enabled to give a step size of twice the comparison frequency.

FEATURES

■ Complete 2·7GHz Single Chip System

■ Optimised for Low Phase Noise

■ Selectable 42 prescaler

■ Selectable Reference Division Ratio

■ Selectable Reference/Comparison Frequency Output

■ Selectable Charge Pump Current

■ Varactor Drive Amplifier Disable

■ 5-Level ADC

■ Variable I2C BUS Address for Multi-tuner Applications

■ ESD Protection: 4kV, Mil-Std-883C, Method 3015 (1)

■ Pin Compatible with SP5658

APPLICATIONS

■ Satellite TV

■ High IF Cable Tuning Systems