RFFC5071 Datasheet, PDF (1/20 Pages) RF Micro Devices – WIDEBAND SYNTHESIZER/VCO WITH INTEGRATED 6 GHz MIXER

Proposed ^RFFC5071/50
72 Wideband
Synthe-
sizer/VCO with
Integrated
6 GHz Mixer
RFFC5071/5072
WIDEBAND SYNTHESIZER/VCO WITH
INTEGRATED 6 GHz MIXER
Package: QFN, 32-Pin, 5 mm x 5 mm
Features
 85MHz to 4200MHz LO
Frequency Range
 Fractional-N Synthesizer with
Very Low Spurious Levels
 Typical Step Size 1.5Hz
 Fully Integrated Low Phase Noise
VCO and LO Buffers
 High Linearity RF Mixer(s)
 30MHz to 6000MHz Mixer
Frequency Range
 Input IP3 +23dBm
 Mixer Bias Adjustable for Low
Power Operation
 Full Duplex Mode (RFFC5071)
 2.7V to 3.3V Power Supply
 Low Current Consumption
 3- or 4-Wire Serial Interface
Applications
 Diversity Receivers
 Software Defined Radios
 Wideband Radios
 Frequency Band Shifters
 Point-to-Point Radios
 WiMax/LTE Infrastructure
 Satellite Communications
Functional Block Diagram
Product Description
The RFFC5071 and RFFC5072 are reconfigurable frequency conversion devices
with integrated fractional-N phased locked loop (PLL) synthesizer, voltage con-
trolled 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 PLL/VCO engine combined with
an external loop filter allows the user to generate local oscillator (LO) signals from
85 MHz to 4200 MHz. The LO signal is buffered and routed to the integrated RF mix-
ers which are used to convert frequencies ranging from 30 MHz to 6000 MHz. 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 inte-
grated 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 out-
puts are provided, which can be used to access internal signals (e.g. the LOCK sig-
nal) or to control front end components. Both devices operate with a 2.7 V to 3.3 V
power supply.
Optimum Technology Matching® Applied
GaAs HBT
GaAs MESFET
InGaP HBT
SiGe BiCMOS
Si BiCMOS
SiGe HBT
GaAs pHEMT
Si CMOS
Si BJT
GaN HEMT
BiFET HBT
LDMOS
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