National Semiconductor has introduced a 12-bit analog-to-digital converter (ADC) with a speed of 3,6 GSps.
The ADC12D1800’s dynamic performance of
-147 dBm/Hz noise floor, 52 dB noise power ratio (NPR) and -61 dBFS intermodulation distortion (IMD) enables new-generation software-defined radio (SDR) architectures and applications.
In addition to the ADC12D1800, National introduced two other members of its ultra high-speed ADC family: the ADC12D1600 with sampling speed up to 3,2 GSps and the ADC12D1000 with performance up to 2,0 GSps. All three PowerWise ADCs target wideband SDRs including radar, communications, multichannel set-top box (STB), signal intelligence and light detecting and ranging (LIDAR) applications.
The 12-bit ADCs are supplied in a leaded or lead-free, 292-ball, thermally enhanced BGA package. They run off a 1,9 V single supply and consist of two channels that can operate interleaved or independently. They include circuitry for multichip synchronisation, programmable gain and offset adjustment per channel. The internal track-and-hold amplifier and extended self-calibration scheme enable a very flat response of all dynamic parameters for input frequencies exceeding 2 GHz, while providing a very low 10-18 code error rate.
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