RF2057 High Performance RF PLL/VCO with Integrated RF Mixers For Repeaters

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 controlled 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 1900 MHz to 2400 MHz. 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 30 MHz to 2500 MHz at the input and output, enabling both up and down conversion. An external crystal of between 10 MHz and 52 MHz or an external reference source of between 10 MHz and 104 MHz can be used with the RF2057 to accommodate a variety of reference frequency options. The full duplex mode of operation, with well over 60 dB 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 2.7 V to 3.6 V operation for compatibility with portable, battery powered devices. It is available in a plastic 32-pin, 5 mm x 5 mm QFN package

技术特性 Features
  • 1900 MHz to 2400 MHz VCO Frequency Range
  • 30 MHz to 2.5 GHz 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 +18 dBm
  • Mixer Bias Adjustable for Low Power Operation
  • Full Duplex Mode
  • 2.7 V to 3.6 V Power Supply
  • Low Current Consumption 60 mA to 80 mA at 3 V
  • 3-Wire Serial Interface
功能框图 Functional Block Diagram

RF2057  功能框图

技术指标
Mixer RF/IF Frequency (Min) (MHz): 30
Mixer RF/IF Frequency (Max) (MHz): 2500
Local Oscillator Frequency (Min) (MHz): 1900
Local Oscillator Frequency (Max) (MHz): 2400
Mixer Conversion Gain (dB): -2
Mixer IIP3 (dBm): 18
ISUPPLY (mA): 65
Package: QFN-32
应用领域 Applications
  • WCDMA/PCS Cellular Repeaters
  • Frequency Band Shifters
  • Super-Heterodyne Radios
  • Diversity Receivers
产品实物图

RF2057  产品实物图

订购信息 Ordering Information
  • RF2057 32-Pin QFN 25pcs sample bag
  • RF2057SB 32-Pin QFN 5pcs sample bag
  • RF2057SR 32-Pin QFN 100pcs reel
  • RF2057TR7 32-Pin QFN 750pcs reel
  • RF2057TR13 32-Pin QFN 2500pcs reel
  • DK2057 Complete Design Kit 1 box
订购信息 Ordering Information
订购型号 MOQ*             INC*             Packaging and Shipping Details QTY Per 1 EA
RF2057 25 EA 25 EA Standard 25 Piece Bag Shipping From Greensboro 1+ $7.21
RF2057SR 100 EA 100 EA Standard 100 Piece 7" Short Reel Shipping From Greensboro 100+ $5.48
RF2057TR7 750 EA 750 EA Standard 750 Piece 7" Reel Shipping From Hsin-Chu 750+ $3.92
RF2057TR13 2500 EA 2500 EA Standard 2500 Piece 13" Reel Shipping From Hsin-Chu    
DK2057 1 EA 1 EA Standard 1 Shipping From Greensboro 1+ $190.00

应用技术支持与电子电路设计开发资源下载 大小(KB) 版本信息
RF2057 数据资料DataSheet下载:PDF 908 DS120308