Anadigics Inc. has readied ACA2601 RF amplifier for fiber-to-the-home/fiber-to-the-premises (FTTH/FTTP) applications. Used in conjunction with a photodiode, the ACA2601 amplifier provides the fiber-to-coax video transition at the optical network terminal (ONT). Targeted for use with both analog television and digital television applications, including video-on-demand (VOD) services, the new amplifier features low noise and low distortion to maintain exceptional signal integrity. The ACA2601 uses a high-impedance input that simplifies the interface to the photodiode, thereby reducing the number of external components.

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Over the 50 MHz to 870 MHz operating frequency band with 79 channel loading, the ACA2601 exhibits typical composite triple beat (CTB) and composite second-order (CSO) distortion levels of -65 dBc, achieving the excellent linearity required for outstanding picture quality. The ACA2601 features a low equivalent input noise of 4.5 pA/sqrt Hz, which provides exceptional sensitivity at low input signal levels.

The ACA2601 integrates a low-noise front-end amplifier, 20 dB of voltage-controlled gain adjustment, and an output amplifier delivering up to +18 dBmV per channel to provide a complete, space-saving, high-performance solution. To simplify design and save external board space, the ACA2601 operates from a single +5 V supply and offers a high-impedance 400-Ohm input that eliminates the need for a matching transformer required by other solutions to interface to the photodiode. Elimination of external components, such as the transformer and gain control circuitry, enables smaller, higher-density designs and simplifies procurement by requiring a smaller bill of materials. The new FTTH/FTTP RF amplifier is offered in a 28-pin QFN surface-mount package that measures only 5 mm x 5 mm x 1 mm and uses a materials set consistent with the European Union’s Restriction of Hazardous Substances (RoHS) directive.

The ACA2601 is priced at $5 in quantities of 10,000 units. Samples are available now.