描述 Description

Qorvo's RFFC5062 are re-configurable frequency conversion devices with integrated fractional-N phased locked loop (PLL) synthesizer, voltage controlled oscillator (VCO) and either one or two high linearity mixers. The fractional-N synthesizer takes advantage of an advanced sigma-delta modulator that delivers ultra-fine step sizes and low spurious products. The RFFC5062 have been designed to use an external crystal, typically 26MHz, and have integrated programmable loading capacitors. The PLL/VCO engine combined with an external loop filter allows the user to generate local oscillator (LO) signals from 85MHz to 4200MHz. The LO signal is buffered and routed to the integrated RF mixers which are used to up/down-convert frequencies ranging from 30MHz to 6000MHz. The mixer bias current is programmable and can be reduced for applications requiring lower power consumption. Both devices can be configured to work as signal sources by bypassing the integrated mixers. Device programming is achieved via a simple 3-wire serial interface. In addition, a unique programming mode allows up to four devices to be controlled from a common serial bus. This eliminates the need for separate chip-select control lines between each device and the host controller. Up to six general purpose outputs are provided, which can be used to access internal signals (e.g. the LOCK signal) or to control front end components. Both devices operate with a 2.7V to 3.3V power supply.

特性 Features

? 85MHz to 4200MHz LO Frequency Range
? Fractional-N Synthesizer with Very Low Spurious Levels
? Typical Step Size 1.5Hz
? On-Chip Crystal-Sustaining Circuit with Programmable Loading Capacitors
? Fully Integrated Low Phase Noise VCO and LO Buffers
? Integrated Phase Noise Typ. 0.3 degrees RMS at 1GHz
? Typ. 0.8 degrees RMS at 3GHz, High Linearity RF Mixer(s)
? 30MHz to 6000MHz Mixer Frequency Range
? Input IP3 +23dBm
? Mixer Bias Adjustable for Low Power Operation
? Full Duplex Mode (RFFC5061), 2.7V to 3.3V Power Supply
? Low Current Consumption, 3- or 4-Wire Serial Interface