6-GHz DAC features on-chip synthesiser

6-GHz DAC features on-chip synthesiser

New Products |
By Jean-Pierre Joosting

The AD9164 D/A converter supports high resolution radar images for designers of military and commercial radar while reducing overall component count. For designers of precision instrumentation equipment, such as smartphone testers, the new device ensures improved accuracy as well as speed of test, contributing to faster market-ready time while significantly decreasing tester complexity and size. Thanks to its audio to 6 GHz frequency coverage, the 16-bit, 12-Gsample/s AD9164 with 2.5-GHz bandwidth moves the tester market one step closer to a universal wireless test platform, according to ADI.

The devices comes with its own “remote evaluation tool”. Users can ‘test-drive’ the AD9164 at:

It is supported by an evaluation board that has a common footprint for each of the D/A converters in this device family.

ADI presents the AD9164 as having the highest linearity in its D/A converters portfolio; 100 to 1,000 times improved spectral purity versus previous generation ADI devices (20-30 dB better); and higher agility, with frequency change time now a 100 times shorter than traditional ADI phased locked loop (PLL) systems.

The reduction in overall component count and thus size enables element-level digital beam-forming advanced radar solutions. With the same performance specifications as the already released AD9162, the AD9164 D/A converter includes an on-chip direct digital synthesizer (DDS) that ensures phase-coherent fast frequency hopping of less than 300 ns for up to 32 different frequencies. This makes the AD9164 D/A converter suited for testing anything from AM broadcast band or Japanese FM band, to 5.8 GHz UNII band.

The converter features a 2x interpolator (FIR85), which enables configurability for lower data rates and converter clocking to reduce overall system power and ease filtering requirements. In mix-mode operation, this D/A converter can be configured to reconstruct RF carriers in the 2nd and 3rd Nyquist zones up to 7.5 GHz while maintaining exceptional dynamic range

The DAC comes in a 8 x 8 mm CSP-BGA or 11 x 11 mm CSP BGA, as well as in an 11 x 11 mm CSP-BGA SnPb (tin-lead, for lead-free exempt applications).

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