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News

New devices provide cost and space savings

Vishay Electronic : 12 March, 2004  (New Product)
Vishay Intertechnology, Inc. today announced the release of the first parts in a new family of dual-MOSMIC devices that combine two MOSMIC amplifiers, one optimized for use in VHF applications and the other for UHF applications, and an integrated switch in the space-saving, industry-standard SOT363 plastic package.
Vishay Intertechnology, Inc. today announced the release of the first parts in a new family of dual-MOSMIC devices that combine two MOSMIC amplifiers, one optimized for use in VHF applications and the other for UHF applications, and an integrated switch in the space-saving, industry-standard SOT363 plastic package.

With excellent dynamic performance, a compact package, and added space savings provided by an integrated band switch that enables one-line switching, the new Vishay Semiconductors TSDF12830YS and TSDF32830YS serve as cost-effective, high-volume solutions for applications including AGC-controlled front-end amplifiers of digital and analog tuners in TVs, VCRs, set-top boxes, satellite systems, and other multimedia and communications equipment.

Each of the devices released today features two different MOSMIC amplifiers with common Source and Gate 2 leads. The first MOSMIC stage, which features a fully internal, self-biasing network-on-chip, is designed to provide for optimal cross-modulation performance and low noise figures at lower VHF frequencies. The second MOSMIC stage is intended to provide superior gain and noise figure performance at the higher frequencies of the UHF range. It features a partly integrated bias for easy Gate 1 switch-off with PNP switching transistors inside PLL integrated circuits.

The devices' integrated band switch not only reduces the number of lines on the printed circuit board, but also lowers the number of external components required. Integrated antiserial diodes between the gates and source protect against excessive input voltage. The drain output pin of each stage is opposite to the corresponding Gate 1 pin in an 'SOT363(L)' pin configuration. Both the TSDF12830YS and TSDF32830YS offer a high AGC range with a soft slope and a main AGC control range of 3 V to 0.5 V. The two devices offer identical electrical specifications while giving designers a choice of two pinout options for the amplifiers.
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