rf2057 RF Micro Devices, rf2057 Datasheet

rf2057

Manufacturer Part Number

rf2057

Description

High Performance Wideband Rf Pll/vco With Integrated Rf Mixers For Repeaters

Manufacturer

RF Micro Devices

Datasheet

1.RF2057.pdf (38 pages)

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Download datasheet (766Kb)

Features



Applications



DS091109

1900MHz to 2400MHz VCO

Frequency Range

30MHz to 2.5GHz Mixer

Frequency Range

Fractional-N Synthesizer

Low Phase Noise VCO

On-Chip Crystal-Sustaining

Circuit With Programmable

Loading Capacitors

Two High-Linearity RF Mixers

Integrated LO Buffers and

Dividers

Mixer Input IP3 +18dBm

Mixer Bias Adjustable for Low

Power Operation

Full Duplex Mode

2.7V to 3.6V Power Supply

Low Current Consumption

60mA to 80mA at 3V

3-Wire Serial Interface

WCDMA/PCS Cellular Repeaters

Frequency Band Shifters

Super-Heterodyne Radios

Diversity Receivers

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.

RF2057High

Performance

Wideband RF

PLL/VCO with

Integrated RF

Mixers For

Repeaters

Product Description

The RF2057 is a low power, high performance, wideband RF frequency conversion

chip with integrated local oscillator (LO) generation and a pair of RF mixers. The RF

synthesizer includes an integrated fractional-N phase locked loop with voltage con-

trolled oscillator (VCO) and dividers to produce a low-phase noise LO signal with a

very fine frequency resolution. The buffered LO output drives the built-in RF mixers

which convert the signal into the required frequency band. The mixer bias current

can be programmed dependent on the required performance and available supply

current. The VCO has been designed to cover the frequency range from 1900MHz

to 2400MHz. The LO dividers can be selected to divide the VCO output frequency by

two or four to give lower LO frequencies. The RF mixers are very broad band and

operate 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 RF2057 to

accommodate a variety of reference frequency options.

The full duplex mode of operation, with well over 60dB of isolation between mixers,

makes the RF2057 ideal for repeater applications.

All on-chip registers are controlled through a simple three-wire serial interface. The

RF2057 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.

GaAs HBT

GaAs MESFET

InGaP HBT

HIGH PERFORMANCE WIDEBAND RF PLL/VCO WITH

Optimum Technology Matching® Applied

Synth

INTEGRATED RF MIXERS FOR REPEATERS

SiGe BiCMOS

Si BiCMOS

SiGe HBT

Functional Block Diagram

sequence

generator

Charge

Frac-N

divider

pump

Ref

VCO

Package: QFN, 32-Pin, 5mmx5mm



detector

Phase /

divider

freq

GaAs pHEMT

Si CMOS

Si BJT

divider

RF2057

GaN HEMT

RF MEMS

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