RF Micro Devices DK2052
The RF2052 is a low power, high performance, wideband RF frequency conversion chip with integrated local oscillator (LO) generation and RF mixer. The RF synthesizer includes an integrated fractional-N phase locked loop with voltage controlled oscillators (VCOs) and dividers to produce a low-phase noise LO signal with a very fine frequency resolution.FEATURES
● 30MHz to 2.5GHz Frequency Range● Fractional-N Synthesizer
● Very Fine Frequency Resolution 1.5Hz for 26MHz Reference
● Low Phase Noise VCO
● On-Chip Crystal-Sustaining Circuit With Programmable Loading Capacitors
● High-Linearity RF Mixer
● Integrated LO Buffer
● Mixer Input IP3 +18dBm
● Mixer Bias Adjustable for Low Power Operation
● 2.7V to 3.6V Power Supply
● Low Current Consumption 55mA to 75mA at 3V
● 3-Wire Serial Interface
APPLICATIONS
● CATV Head-Ends● Digital TV Up/Down Converters
● Digital TV Repeaters
● Multi-Dwelling Units
● Cellular Repeaters
● Frequency Band Shifters
● UHF/VHF Radios
● Software Defined Radios
● Satellite Communications
● Super-Heterodyne Radios
● BPSK Modulator VCO LO divider Synth Frac-N sequence generator Charge pump N divider Phase / freq detector Mixer Ref divider Functional Block Diagram Product
DESCRIPTION
The buffered LO output 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.