RF2053 FRACTIONAL-N SYNTHESIZER Datasheet

RF2053 Datasheet, PDF, Equivalent


Part Number

RF2053

Description

HIGH PERFORMANCE FRACTIONAL-N SYNTHESIZER

Manufacture

RFMD

Total Page 30 Pages
Datasheet
Download RF2053 Datasheet


RF2053
RF2053RF2053
HIGH PERFORMANCE FRACTIONAL-N
SYNTHESIZER WITH INTEGRATED RF MIXER
Package: QFN, 32-Pin, 5mmx5mm
Features
Fractional-N Synthesizer
Very Fine Frequency Resolution
1.5Hz for 26MHz Reference
300MHz to 2400MHz External
VCO Frequency Range
On-Chip Crystal-Sustaining
Circuit With Programmable
Loading Capacitors
Integrated LO Buffer and LO
Divider
High-Linearity RF Mixer
Mixer Input IP3 +23dBm Typ.
Mixer Bias Adjustable for Low
Power Operation
Mixer Frequency Range 30MHz
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
Software Defined Radios
Satellite Communications
Super-Heterodyne Radios
LO
divider
Synth Frac-N
sequence
generator
Charge
pump
N
divider
Phase /
freq
detector
Ref
divider
Functional Block Diagram
Product Description
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.
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.
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
DS140110
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.
1 of 36

RF2053
RF2053
ENBL
CONTROL MODE
RESETB
SERIAL
BUS
SDATA
SCLK
ENX
EXTERNAL VCO
Vtune
Detailed Functional Block Diagram
ANA_VDD
DIG_VDD
RFIPN
ANA_DEC
RFIPP
REXT
VCOINP
VCOINN
1:1
Serial Data Interface,
Control and Biasing
Analog
Regulator
Digital
Regulator
Mixer
LO Divider
/1, /2, or /4
VCO Buffer
LO Buffer
IP
1:1
ANA_VDD
RFOPP
RFOPN
4:1
OP
EXTERNAL
OP-AMP
LFILT1
Vref
XTALIPP
XTALIPN
Frac-N
Sequence
Generator
Synthesizer
Charge
Pump
N Divider
Phase /
Freq
Detector
Reference Oscillator
Circuitry and
Crystal Tuning
Reference Divider
/1 to /7
Pin Out
32 31 30 29 28 27 26 25
ENBL 1
24 RFIPP
VCOINP 2
23 RFIPN
VCOINN 3
22 ANA_VDD
REXT 4
ANA_DEC 5
21 NC
EP
20 NC
LFILT1 6
19 DIG_VDD
NC 7
18 NC
NC 8
17 NC
9 10 11 12 13 14 15 16
2 of 36
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
DS140110


Features RF2053RF2053 HIGH PERFORMANCE FRACTIONAL -N SYNTHESIZER WITH INTEGRATED RF MIXER Package: QFN, 32-Pin, 5mmx5mm Mixer Features  Fractional-N Synthesizer Very Fine Frequency Resolution 1.5Hz for 26MHz Reference  300MHz to 2400 MHz External VCO Frequency Range  On -Chip Crystal-Sustaining Circuit With P rogrammable Loading Capacitors  Inte grated LO Buffer and LO Divider  Hig h-Linearity RF Mixer  Mixer Input IP 3 +23dBm Typ.  Mixer Bias Adjustable for Low Power Operation  Mixer Freq uency Range 30MHz to 2500MHz  2.7V t o 3.6V Power Supply  Low Current Con sumption 50mA to 70mA at 3V  3-Wire Serial Interface Applications  CATV Head-Ends  Digital TV Up/Down Conver ters  Digital TV Repeaters  Multi -Dwelling Units  Frequency Band Shif ters  UHF/VHF Radios  Software De fined Radios  Satellite Communicatio ns  Super-Heterodyne Radios LO divi der Synth Frac-N sequence generator Ch arge pump N divider Phase / freq detector Ref divider Functional Block Diagram Product Description The.
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