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GaAs ICs target digital radio, sat-com markets

Posted: 20 Nov 2006 ?? ?Print Version ?Bookmark and Share

Keywords:TriQuint? TGC4402? TGC4403? TGC4405? GaAs?

TriQuint Semiconductor has introduced the first three members of its Multi-Function Circuit (MFC) family. These high-performance GaAs ICs for point-to-point radio and satellite communications promise the size, performance and cost advantages demanded by customers.

The three new products address OEM needs for frequency up conversion in the transmit (Tx) and local oscillator chains for digital radio and satellite communications systems. The TGC4405 provides a high level of integration for designs that specify RF up conversion, a local oscillator (LO) frequency doubler and output RF signal amplification in a small, single product.

TriQuint's TGC4402 was created for designs that require up conversion without an integral LO doubler or output amplifier. TGC4405 and TGC4402 both employ single-ended designs and therefore don't require external baluns. TGC4403 is a millimeter wave frequency doubler that includes an output buffer amplifier.

Environmental robustness
TriQuint said these products are 100 percent DC and RF tested (on-wafer) to ensure performance compliance. The company's designs target 18-, 23- and 26GHz applications including digital radio and K-band satellite communications. These devices are produced with very thick protective surface passivation, the company said, offering a superior level of environmental robustness suitable for non-hermetic packages.

The TGC4402 is a K-band up converting mixer for digital radio and sat-com applications. This single balanced passive product features single-ended signal ports; external RF, LO and IF baluns are not required. The RF frequency range for this product ranges from 17GHz to 27GHz. Typical conversion loss is up to 9dB and the IF bandwidth ranges from 0.5GHz to 3GHz. The die size of the TGC4402 is 2.01mm?.

The TGC4403 is a K-band frequency doubler and includes a buffer amplifier. This digital radio and sat-com device delivers 20dBm output power and 18dB of gain. The amplifier's high conversion gain allows it to operate over a -5dBm to 5dBm input power range while consuming only 150mA of quiescent current from a 5V supply.

The TGC4405 is a K-band single -balanced up converter. This multifunction product for digital radio and K-band sat-com applications features an integrated LO doubler and output post amplifier, providing 13dB typical conversion gain across the 17GHz to 27GHz RF band, with single-ended signal ports and integrated RF, LO and IF baluns. It operates over a -5dBm to 5dBm input power range while consuming only 425mA of quiescent current from a 5V supply.

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