Fujitsu Microelectronics America has introduced a 14-bit, 1.3 GSa/S digital-to-analog converter (DAC). The MB86065 is a single-channel device that was derived from the MB86064 dual 14-bit, 1 GSa/s DAC developed by Fujitsu in 2003.

The significantly increased conversion rate to 1.3 GSa/S enables direct-IF frequencies to be guaranteed above 400 MHz. This feature expands the spurious-free, generating region and relaxes subsequent filtering requirements. The higher, direct-IF architectures are more versatile than direct conversion, enabling true platform solutions capable of rapid re-targeting to different market and frequency plan requirements. The higher direct-IF frequencies enhance end-applications significantly by reducing the overall design effort, thereby lowering the total cost of ownership and speeding time to market.

The MB86065 DAC is backward compatible with the "DAC A" channel of the MB86064 and integrates the same waveform memory module (WMM) developed by Fujitsu for the earlier version. The WMM enables waveforms to be downloaded and executed on-chip, which for device test and evaluation reduces the need for a high-speed data generator.

The MB86065 continues to offer a best system-partitioning solution with digital pre-processing using the latest 0.65-micron ASIC or FPGA technology. In particular, reprogrammable implementations enable flexibility with no impact on the mixed-signal component that defines system performance.

A characterized system does not require substantial re-design of analog circuitry and any associated calibration algorithms — such as I&Q gain and phase trimming — to address different frequency and carrier requirements. This delivers significant savings across a product portfolio.

The MB86065 is housed in an enhanced, fine-pitch, ball grid array (EFBGA) package, measuring 12 mm x 12 mm. Customer development kits and sample devices will become available in early 2007 with mass production scheduled for April 2007. The price is $34 each in 10,000-unit quantities.

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