SP5054 Datasheet (Mitel Networks) - 2.6GHz 3-Wire BUS Controlled Synthesiser

SP5054, 2.6GHz 3-Wire BUS Controlled Synthesiser

The SP5054 contains all the elements necessary, with the exception of reference crystal, loop filter and external high voltage transistor, to control a voltage controlled local oscillator, so forming a PLL frequency synthesised source.

The system is controlled by a microprocessor via a standard Data

SP5054 2.6GHz 3-Wire BUS Controlled Synthesiser DS3048 - 3.4 May 1996 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.

The circuit consists of a divide-by-16 prescaler with its own preamplifier

SP5054 Features

* s Complete 2

* 6GHz Single Chip System s 62

* 5kHz, 100kHz and 125kHz Step Size s Low Power Consumption (325mW Typ.) s Programming Compatible with Toshiba TD6380, TD6381 and TD6382

* s Pin Compatible with SP5055

* s Low Radiation s Varactor Drive Amplifier Disable s Charge Pump Disable