Anadigics, Inc. has introduced five new line amplifier ICs for CATV infrastructure applications. These amplifiers help CATV service providers increase their system bandwidth, allowing them to offer additional digital services, including digital simulcast of analog channels and high-definition television (HDTV). These line amplifier ICs support picture quality by offering high linearity and noise figure to ensure minimum signal degradation over a frequency range from 40 MHz to 1 GHz. The devices maintain low composite triple beat (CTB), composite second order (CSO), and cross modulation distortion characteristics for a fully loaded spectrum. The amplifiers are manufactured using Anadigics’ MESFET process. Different versions of the IC for 12 V or 24 V are available.

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The ACA0862B andACA0862D are 12-V devices designed to provide high power levels and can serve as system amplifier output stages. The devices each have 11 dB of gain and are easily cascaded to form an IC equivalent of a hybrid amplifier. The ACA0862B features lower power dissipation than the ACA0862D. The ACA1206 is another 12-V device that is optimized to serve as a system amplifier input stage. With 14 dB of gain, the amplifier can drive an output stage device, such as the ACA0862B or ACA0862D. Together, the ACA1206 and an output stage are cascaded to form an IC equivalent of a hybrid amplifier. The ACA2402 and ACA2407 are 24-V devices that can be used individually as replacements for hybrid amplifiers. The ACA2402 serves as a push-pull amplifier, while the ACA2407 functions as a power doubler.

The five new amplifiers are offered in a 16-pin wide-body SOIC surface-mount package with a built-in heat slug for enhanced thermal protection. The ACA0862B, ACA0862D, ACA1206, ACA2402 and ACA2407 are priced at $7.60, $10.90, $7.45, $14.15 and $18.20, respectively, all for 10,000-unit quantities. Samples are available now.