IBM SiGe technology boosts oscilloscope sampling rate to 100 GS/s -

IBM SiGe technology boosts oscilloscope sampling rate to 100 GS/s


Tektronix Inc. has released details of four DPO/DSA70000D series oscilloscope models that use the IBM 8HP silicon germanium (SiGe) chipset in a move that was detailed in May.
With real time sampling rates up to 100 GS/s on two channels and 33 GHz analog bandwidth on four channels the additions include units with 25 and 33 GHz bandwidths.

Tektronix engineers have integrated high-speed bipolar transistors directly on the same die as standard CMOS, enabling the oscilloscopes to provide improved rise time on multiple channels. Tektronix says such high-sensitivity, low noise measurement capabilities are required for accurate characterization of high speed optical, RF and serial data measurements beyond 20 Gb/s data rates.  

The SiGe 33 GHz preamp and track & hold provides real time sample rate performance is 100GS/s on two channels and 50 GS/s on 4 channels both at 33GHz bandwidth. 33 GHz bandwidth on 4 channels with 10 terasamples equivalent time sampling provides signal visibility to real-time oscilloscopes for both design and manufacturing applications.

The rise time performance enables accurate characterization of sub 20 picosecond rise time signals to aid the development of silicon.

Input sensitivity is 62.5mV full scale (6.25mV/div) which provides better visibility of low amplitude signaling common in LVDS-based standards.

Access to data and measurement analysis including 8b/10b serial decode as well fast waveform data transfer within the instrument is complimented with region-based qualification using visual trigger capability.
The DPOJET jitter and timing analysis toolset has been updated to support jitter separation of bounded uncorrelated jitter (BUJ). BUJ is an important category of jitter resulting from crosstalk on signals greater than 10 Gb/sec. Separation of BUJ from other random jitter sources can be accomplished in DPOJET for more complete analysis.

The oscilloscopes add a DataStore facility which provides an advanced data processing pathway.  With third-party tools like MATLAB or Microsoft.NET languages, users can insert waveform data processing algorithms directly into the scope’s application and display system. Tektronix says 76 percent of its customers use third-party software and DataStore should provide productivity improvements over a broad range of applications like de-embedding or invoking custom filter functions.

Tektronix provides up to 33 GHz bandpass support through its seamless TekConnect channel interface, enabling the use of Tektronix 2.92mm adaptors and high-performance probes that feature small probe heads to provide a flexible and reliable connection to the device under test.

With fiber speeds now at 100 Gb/s and beyond, engineers are trying to accurately verify optical modulation techniques for efficient fiber transport. The DPO/DSA70000D provides the 4-channel accuracy required for PM-QPSK modulation analysis. The 70000D Series works with the Coherent Lightwave Signal Analyzer from Optametra, which was recently acquired by Tektronix, for visualization and measurement of optical PM-QPSK or QAM16 and other complex-modulated signals.

Worldwide shipments of the DPO/DSA70000D models will begin in Q4 2011. The four available models include DPO73304D and DSA73304D at 33 GHz bandwidth and DPO72504D and DSA72504D at 25 GHz bandwidth. Pricing starts at $202,000.

A backgrounder on the technology used in the DPO/DSA70000D is available here .
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