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Analog Devices rolls 14bit, 250MSPS ADC

Posted: 10 Oct 2012 ?? ?Print Version ?Bookmark and Share

Keywords:Analog Devices? ADC? JEDEC JESD204B? AD9250? TD-SCDMA?

Analog Devices Inc. has unleashed the AD9250 dual-channel, 14bit, 250MSPS, A/D converter (ADC) featuring the JEDEC JESD204B serial output data interface standard. According to the company, the ADC is the first-to-market with full JESD204B Subclass 1 deterministic latency that accommodates the precise synchronisation of multiple data-conversion channels through a serial interface.

The serial interface implementation of the AD9250 provides up to 5Gb/s over a 1 or 2 lane-capable link. Two serial lanes are used to support the full 250MSPS, dual-ADC data rate, or a single lane can be used to support reduced sampling rates.

The AD9250 converter's JESDB204 serial interface reduces the number of high-speed differential output data paths required from up to 28 to 2 per IC, noted the company. Its Subclass 1 deterministic latency function is repeatable from power-up cycle to power-up cycle and across link re-synchronisation events. Areas where this function is important are in diversity radio systems and instrumentation, multi-mode digital receiver applications such as TD-SCDMA, WCDMA, LTE (especially the 2R2T >8R8T evolution), radar/defence electronics, medical imaging systems, cable infrastructure and general-purpose software radios.

The AD9250-250EBZ (250MSPS), AD9250-170EBZ (170MSPS), and AD6673-250EBZ DUT boards and companion HSC-ADC-EVALDZ high-speed data capture card comprise a signal performance-optimised complete evaluation system for the AD9250. The captured data can be analysed using a laptop computer and ADI's free VisualAnalog software. For compatibility with FPGA development platforms, the CVT-ADC-FMC-INTPZB FMC interposer connector for the DUT boards is available.

A 170MSPS pin-compatible version (AD9250-170) is available, as well as the AD6673, an 11bit, 250MSPS, pin-compatible version. Available in 48-lead LFCSP, the AD9250-250, AD9250-170 and AD6673-250, costs $131.57, $72.49 and $74.80, respectively, in quantities of 1,000.

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