Low-noise 16-bit ADC
Staff -- Test & Measurement World, 6/1/2005 2:00:00 AM
Targeting test and measurement equipment as well as military and aerospace communication systems, Analog Devices now offers two versions of the AD9446, a 16-bit ADC that keeps aperture jitter down to just 60 fs. The AD9446-100 delivers 100-Msample/s data rates while offering high 80-dBfs signal-to-noise ratio (SNR) and 90-dBc spurious-free dynamic range (SFDR). An 80-Msample/s version, the AD9446-80, achieves 85-dBc SFDR and 82-dBfs SNR.
In addition, the AD9446 features a typical 16-bit differential nonlinearity (DNL) of ±0.5 LSB and a typical 16-bit integral nonlinearity (INL) of ±3 LSB. The AD9446 is part of a family of high-speed ADCs that includes the recently introduced 14-bit, 80-Msample/s AD9444 and the 14-bit, 125-Msample/s AD9445. As with the AD9444 and the AD9445, the new AD9446 features parallel low-voltage differential signaling (LVDS) outputs, including an output clock, which simplifies the interface to digital-processing components and reduces the potential for digital noise coupling back into the ADC core. The device is available in a Pb-free, 100-lead surface-mount plastic package (100-lead TQFP/EP).
Base prices (in 1000-unit quantities): AD9446-80—$72.25; AD9446-100—$79.90. Delivery: samples now; production quantities in September. Analog Devices, www.analog.com/AD9446.
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