RF2053
RF2053
HIGH PERFORMANCE FRACTIONAL-N
SYNTHESIZER WITH INTEGRATED RF MIXER
Package: QFN, 32-Pin, 5mmx5mm
LO
divider
Features
Fractional-N Synthesizer
Very Fine Frequency Resolution
1.5Hz for 26MHz Reference
Synth
Frac-N
sequence
generator
300MHz to 2400MHz External
VCO Frequency Range
N
divider
On-Chip Crystal-Sustaining
Circuit With Programmable
Loading Capacitors
Phase/
freq
detector
Charge
pump
Integrated LO Buffer and LO
Divider
Ref
divider
High-Linearity RF Mixer
Mixer Input IP3 +23dBm Typ.
Functional Block Diagram
Mixer Bias Adjustable for Low
Power Operation
Product Description
Mixer Frequency Range 30MHz
The RF2053 is a low power, high performance, wideband RF frequency conversion
chip with integrated local oscillator (LO) generation and RF mixer. The RF synthe-
sizer includes an integrated fractional-N phase locked loop that can control an
external VCO to produce a low-phase noise LO signal with a very fine frequency res-
olution. The VCO output frequency can be divided by 1, 2, or 4 in the LO divider,
whose output is buffered and drives the built-in RF mixer which converts the signal
into the required frequency band. The mixer bias current can be programmed
dependent on the required performance and available supply current. The LO gen-
eration blocks have been designed to operate with external VCOs covering the fre-
quency range from 300MHz to 2400MHz. The RF mixer is very broad band and
operates from 30MHz to 2500MHz at the input and output, enabling both up and
down conversion. An external crystal of between 10MHz and 52MHz or an external
reference source of between 10MHz and 104MHz can be used with the RF2053 to
accommodate a variety of reference frequency options.
to 2500MHz
2.7V to 3.6V Power Supply
Low Current Consumption
50mA to 70mA at 3V
3-Wire Serial Interface
Applications
CATV Head-Ends
Digital TV Up/Down Converters
Digital TV Repeaters
Multi-Dwelling Units
Frequency Band Shifters
UHF/VHF Radios
All on-chip registers are controlled through a simple three-wire serial interface. The
RF2053 is designed for 2.7V to 3.6V operation for compatibility with portable, bat-
tery powered devices. It is available in a plastic 32-pin, 5mmx5mm QFN package.
Software Defined Radios
Satellite Communications
Super-Heterodyne Radios
Optimum Technology Matching® Applied
GaAs HBT
GaAs MESFET
InGaP HBT
SiGe BiCMOS
Si BiCMOS
SiGe HBT
GaAs pHEMT
Si CMOS
Si BJT
GaN HEMT
RF MEMS
LDMOS
RF MICRO DEVICES®, RFMD®, Optimum Technology Matching®, Enabling Wireless Connectivity™, PowerStar®, POLARIS™ TOTAL RADIO™ and UltimateBlue™ are trademarks of RFMD, LLC. BLUETOOTH is a trade-
mark owned by Bluetooth SIG, Inc., U.S.A. and licensed for use by RFMD. All other trade names, trademarks and registered trademarks are the property of their respective owners. ©2006, RF Micro Devices, Inc.
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
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