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Optimum Technology Matching® Applied

GaAs HBT

InGaP HBT

GaAs MESFET

SiGe BiCMOS

Si BiCMOS

SiGe HBT

GaAs pHEMT

Si CMOS

Si BJT

GaN HEMT

Functional Block Diagram

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-

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Product Description

7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical

support, contact RFMD at (+1) 336-678-5570 or customerservice@rfmd.com.

BiFET HBT

LDMOS



LO

divider

LO

divider

Frac-N

sequence

generator

N

divider

Phase /

freq

detector

Charge

pump

Ref

divider

VCO

Synth

Sw

RF2054

LOW POWER PLL AND VCO WITH INTEGRATED

MIXERS

The RF2054 is a low power, high performance, frequency conversion chip with inte-

grated local oscillator (LO) and a pair of RF mixers. The synthesizer includes an inte-

grated fractional-N phase locked loop that can control the VCO to produce a low

phase noise and low spurious LO signal with very fine frequency resolution. The

VCO output can then be divided by one, two, or four in the LO divider, the output of

which drives the mixer, which converts the signal into the required frequency band.

The LO generation block has been optimized to operate with the VCO covering the

frequency range from 940MHz to 1000MHz, set by the value of the external induc-

tor used. The mixers are broadband and can operate from 30MHz to 2500MHz at

the input and output, enabling both up and down conversion. An external reference

source of between 10MHz and 26MHz can be used with the RF2054.

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

RF2054 has been characterized for 2.2V operation and low power consumption. It

is available in a plastic 32-pin, 5mm x 5mm QFN package.

Features



Fractional-N Synthesizer



Very Fine Frequency Resolution

1.5Hz for 26MHz Reference



LO Frequency Range 940MHz to

1000MHz



Low Phase Noise VCO



Integrated LO Buffers



Two Wideband RF Mixers



Mixer Frequency Range 30MHz

to 2500MHz



Mixer Input IP3 +12dBm



Mixer Bias Adjustable for Low

Power Operation



2.1V to 2.3V Power Supply



Low Current Consumption

45mA typ. at 2.2V



3-Wire Serial Interface

Applications



Band Shifters



Super-Heterodyne Radios



Diversity Receivers



Wireless Telemetry

DS120320

Package: QFN, 32-Pin, 5mm x 5mm

RF2054Low

Power PLL and

VCO with Inte-

grated Mixers