DP211 / U1068A-002 Acqiris High-Speed PCI Digitizer

The Acqiris DP210 / DP211 / U1068A High-Speed PCI Digitizers are designed for the specific purpose of optimizing high-speed ADC performance. The analog front-end technology provides the signal conditioning, amplification, and interleaving functions essential to achieving high-speed data acquisition at GS/s rates. The digital data handling components provide vital clock and synchronization signals, to capture and memorize acquired data with maximum throughput. Together these ASICS make low-power, high-fidelity, data acquisition much more accessible and provide maximum data throughput to the host PC or processor to reduce the time and cost of measurement.

The Acqiris DP210 / DP211 / U1068A High-Speed PCI Digitizers deliver 2 GS/s single-shot sampling rate, wide 500 MHz bandwidth, and long 256-ksample acquisition memory. The high sampling rate and wide bandwidth combine to allow the accurate capture of signals up to 500 MHz in frequency. The long acquisition memory enables the digitizer to record complex signals over long periods of time.

The Acqiris DP210 / DP211 / U1068A High-Speed PCI Digitizers has programmable front-end electronics that provide a complete set of input voltage ranges (from 50 mV to 5 V, full scale, in a 1, 2, 5 sequence) and variable voltage offset. The input has selectable impedance (50 Ω or 1 MΩ) and is fully protected against over-voltage signals. The amplifiers feature internal calibration (no need to disconnect input signals) and very fast recovery from out-of-range signals. The input buffer is mounted on a removable mezzanine card so replacement is fast and efficient, in the event of accidental damage or as components fatigue over time (such as relays in high-duty-cycle automated testing applications).

The digitizer includes a precision trigger system with full pre- and post-trigger adjustment. User-selectable coupling is combined with internal or external trigger sources for maximum flexibility. The digitizer also provides a sophisticated sequential trigger mode with less than 500 ns dead time between successive triggers. This extremely low dead time enables events, that may occur at high repetition rates, to be captured and stored in their correct arrival sequence. This trigger mode is perfect for "impulse-response" type applications (radar, sonar, LIDAR, ultrasonic, medical and biomedical research, etc.). The sequential trigger mode and low dead time greatly extend the digitizers' timing range and resolution. Each event can be individually time stamped and relative time measurements (between events) can be made with less than 1-ns resolution.

Each digitizer has its own crystal-controlled precision time base, and sample rates can be selected, in a 1, 2, 2.5, 4, 5 sequence, from 100 S/s to 2 GS/s. An internal time-to-digital converter (TDC) with high timing resolution is used to assist with timing calibration and trigger positioning. The TDC permits accurate positioning of the trigger signal with regard to the internal clock (sampling time). The sample rate can also be generated externally using the external input connector for applications where the sample rate must be synchronized with the signal to be acquired.