Date: 22/09/2009
New series of RFICs from ADI for LTE and 4G cellular base stations
Analog Devices has introduced the ADRF660x and ADRF670x, a series of high-integrated RFICs for LTE and 4G cellular base stations. A small high-density radio card form factors are needed to support the delivery of continuous voice and high-data-rate services. The ADRF660x series of mixers and ADRF670x series of modulators enable these high-density radio cards by combining multiple discrete functional blocks into a single device, while meeting the performance required by high-capacity base stations.
The four ADRF660x series integrate a high-linearity active RF mixer, RF input balun for single- ended 50-ohms input, and a PLL synthesizer with integrated VCO in one compact RF circuit. The active mixer provides a voltage conversion gain of 6 dB, alleviating the need for additional IF amplification over competing passive mixers. The differential IF output is capable of supporting high IF frequencies up to 500 MHz. The ADRF660x series can be used for receiver path down-conversion and transmit path observation receiver applications.
The four ADRF670x series integrate a high dynamic range analog I/Q modulator, RF output switch and PLL (phase locked loop) with integrated VCO (voltage controlled oscillator) in one compact RFIC. The modulator input bandwidth of 500 MHz is capable of supporting either a specified band or complex IF up-conversion transmit signal paths. In addition, the modulator output supports a linear high output power level for wideband multi-carrier LTE applications.
All the eight devices share a common SPI control interface and are software compatible. The integrated PLL is a multi-modulus Fractional-N synthesizer supports LTE's 100 KHz channel raster and offers low in-band phase noise. For better flexibility all devices provide a buffered local oscillator (LO) output and allow the use of an external VCO. The ADRF660x and ADRF670x products are suitable for ADI's mixed-signal converters, amplifiers and clocks.
"Today's 3G and LTE base stations use many standard discrete RF components to optimize performance across both the transmit and receive RF signal paths. ADI's new ADRF660x and ADRF670x products combine the radio frequency conversion functional blocks into one integrated circuit, without any sacrifice in performance," said Peter Real, vice president, Linear and RF products, Analog Devices. "These new devices are based on ADI's PLL/VCO synthesizer, mixer and modulator technologies, which offer the industry's leading phase noise performance, power consumption and linearity for smaller form factor and higher density macro, micro, and picocell base stations."
Price:
ADRF660x: Each $8.98 for 10k pieces
ADRF670x: Each $9.98 for 10k pieces
Availability:
ADRF660x, ADRF670x: Now in samples
The frequency bands for all ADRF660x and ADRF670x products:
Product Internal LO Range ±3 dB RF Out Balun Range ±1dB RF Out Balun Range
ADRF6601 750 - 1160 MHz 300 - 2500 MHz 450 - 1600 MHz
ADRF6602 1550 - 2150 MHz 1000 - 3100 MHz 1350 - 2750 MHz
ADRF6603 2100 - 2600 MHz 1100 - 3200 MHz 1450 - 2850 MHz
ADRF6604 2500 - 2900 MHz 1200 - 3600 MHz 1600 - 3200 MHz
ADRF6701 790 - 1160 MHz 400 - 1300 MHz 550 - 1000 MHz
ADRF6702 1550 - 2150 MHz 1200 - 2400 MHz 1550 - 2200 MHz
ADRF6703 2100 - 2600 MHz 1600 - 2600 MHz 1900 - 2400 MHz
ADRF6704 2500 - 2900 MHz 2200 - 3000 MHz 2400 - 2800 MHz
For more details visit www.analog.com