product news ♦ RF electronics
With integrated phase noise of 0.18deg rms at 1GHz, the RFFC207x and RFFC507x improve system performance for radio designers. Additionally, the integrated fractional-N synthesizer features an advanced sigma-delta modulator to achieve ultra-fine step sizes and lower spurious products, while integrated mixers enable a smaller implementation (5mm x 5mm) than competing solutions. Finally, by integrating the entire LO path on-chip, the RFFC207x and RFFC507x eliminate the need for designers to work with the highly sensitive interface from VCO to mixer, saving valuable design time and improving end product manufacturing yields.
The RFFC207x and RFFC507x series also deliver industry-low power consumption. The components’ bandwidth and phase noise specifications are achieved using only 125mA from a 3-volt supply (single-mixer, high linearity setting), and the current can be reduced to 100mA by reducing the programmable mixer linearity setting. Importantly, the 4500MHz components use only 10mA more than the 2700MHz components.
All of the components can be programmed through a simple 3-wire serial interface. They also feature a unique programming mode that allows up to four devices to be controlled from a common serial bus. By eliminating the need for separate chip-select control lines between devices and host controller, this lowers the cost of implementation and the risk of interference between RF and digital lines on the target PCB. Finally, two frequencies can be loaded into the device when it is initialized, allowing convenient switching between frequencies, and lock detect and general purpose pins are available, enabling control though the serial bus.
Anadigics Reveals High- Bandwidth RF Amplifier for Fiber-to-the-Home Systems
The ACA2604 device enables increased data delivery for FTTH and RFoG subscribers
Responding to an increasing demand for wider bandwidth data pipes for fiber-to-the-home (FTTH) and RF-over-Glass (RFoG) systems, Anadigics has announced an upgrade to its ACA2604 RF amplifier supporting operation to 1 GHz.
The improved ACA2604 enables cable MSOs and telco service providers to increase data rates as well as the number of channels available to consumers. This functionality is essential as sales continue to grow for high-definition TVs, VOD, and other OTT services which require significant amounts of bandwidth.
The Anadigics ACA2604 RF amplifier is designed for use in fiber-to-coax equipment, such as optical network units for FTTH and RFoG systems incorporating radio frequency overlay, and fiber-to- the-building (FTTB) optical receivers for multiple dwelling units. The amplifier, driven by the forward path photodiode in a fiber optic RF receiver, forms the optical to electrical interface and boosts overall output to the in-home coax wiring.
“Delivering 1 GHz performance from the ACA2604 is a significant milestone in our efforts to ensure that broadband service providers have the components necessary to provide the highest performance networks,” said Joe Cozzarelli, Senior Director, Broadband RF Product Line, Anadigics. “As the industry continues to evolve and equipment performance requirements increase, we’ll continue to push the limits of innovation to keep our customers ahead on the broadband demand curve.”
The ACA2604 is manufactured using Anadigics’ proven GaAs technology that features state-of-the- art distortion performance, temperature stability, and ruggedness. The amplifier operates from a single +5 volt supply and is offered in a 5 mm x 5 mm x 1 mm surface mount package.
Additional facts and highlights about the ACA2604 include:
* Has an operating frequency between 50 and 1,000 MHz.
* Features high linearity: CSO/CTB = - 65 dBc (@ 79 Chan., 21dBmV/ch ) * Offers low equivalent input noise: 4.5 pA/rtHz. * Does not require a transformer for interface to photodiode.
* Features 22 dB Gain Adjust. * Packaged to be RoHS compliant. * Pin compatible with Anadigics’ ACA2601 RF amplifier.
* Reference circuits and BOMs are available for common applications
November/December 2010
www.compoundsemiconductor.net 197
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