2.6GHz 3-Wire BUS Controlled Synthesiser

The SP5054 is a single-chip frequency synthesiser designed for satellite TV tuning systems. It is a programming variant of the SP5055, allowing the design of one tuner with either I2C bus or 3-wire bus format, depending on which device is inserted. The SP5054, when used with a satellite varactor tuner, forms a complete phase locked loop tuning system.

FEATURES
■ Complete 2·6GHz Single Chip System
■ 62·5kHz, 100kHz and 125kHz Step Size
■ Low Power Consumption (325mW Typ.)
■ Programming Compatible with Toshiba TD6380, TD6381 and TD6382 *
■ Pin Compatible with SP5055 *
■ Low Radiation
■ Varactor Drive Amplifier Disable
■ Charge Pump Disable
■ Single Port 18/19 Bit Serial Data Entry
■ Four Controllable Outputs
■ ESD Protection †

APPLICATIONS
■ Satellite TV
■ High IF Cable Tuning Systems