Global Sources
EE Times-Asia
Stay in touch with EE Times Asia
EE Times-Asia > Memory/Storage

Signal generator to support all common logic families

Posted: 12 Jul 2004 ?? ?Print Version ?Bookmark and Share

Keywords:strategic test? ultrafast rf7221? pci card? uc7221? ux7221?

Semiconductor and electronic test and design engineers now only need one instrument to produce digital signals for all common logic families. Strategic Test's Ultrafast UF7221 is a full-length PCI card that provides a maximum output rate of 40MHz on 32 digital channels and can be equipped with up to 4,096Mb signal memory for generating long signals at the maximum output rates.

Compared to traditional instruments, the UF7221 is less expensive, faster to use and eliminates the need for multiple instruments to output different signal levels. It is also the only PCI card to support all logic families and to offer such deep signal memories. A 6U CompactPCI version (UC7221) and 3U PXI version (UX7221) are also now available and are similarly unique in their class. Each 4 bit (nibble) can be programmed with a different HIGH and LOW output level from -2V to 10V in 10mV increments. This output range can generate signals compatible with ECL, PECL, TTL, LVDS, LVTTL, CMOS and LVCMOS. The output rate of the signals can be programmed from dc to the 40MHz maximum output rate. Each channel can drive a maximum current of 100mA (maximum 200mA per nibble). Differential signals such as ECL and LVDS are generated in the on-board hardware. This has the advantage that only one data-bit is used for each pair of differential signals so that more channels are available. It also serves to conserve on-board memory. Software drivers for Windows XP, 2000, NT, ME, 98 and Linux are supplied, while drivers for MATLAB, LabVIEW, Agilent's-VEE and DASYLab are available as cost-options.

The UF7221 has two operating modes. In Standard Mode, the user first transfers the data to the onboard memory before starting the output. This mode allows all 32 channels to be used at the maximum output rates of up to 40MHz. The alternative FIFO Mode uses the PCI Bus Master capability of the card to continuously transfer data from the PC to the card during the output process and allows signals longer than the available on-board memory to be generated. Using either mode, tests can be repeated much quicker than traditional GPIB bus-based Pattern Generators that have a limited data transfer rate between instrument and the PC of typically 1MBps.

- eeProductCenter

Article Comments - Signal generator to support all comm...
*? You can enter [0] more charecters.
*Verify code:


Visit Asia Webinars to learn about the latest in technology and get practical design tips.

Back to Top