Having chosen a device, opening the Eval tool initially shows (above, and repeated below for size/clarity) a block diagram of the selected part, showing the layout of its major sections. Each block in the diagram that is user configurable, is ientified by highlighting, and has a corresponding entry on the settings menu.
The user can enter their own chosen values in each of the field, and can then set the operating parameters for the device (clock speed, input signal frequency, etc. Each time a setting is changed, the parameter is changes to being shown in bold face to indicate that the simulation with that parameter has not yet been executed. The user can then run the simulation; a greyed-out ‘run’ box indicates that the current set of input conditions has been simulated, and results are available.
After a run a number of tabs are presented to show each of the key metrics of performance, such as waveforms or frequency response plots. Graphs are ‘live’ - a cursor positioned on a graph will read out the instantaneous value. There is also a zoom/pan function. A results history is maintained over the session, and results can be downloaded.
14bit, 500 MHz, quad ADC
Newly-posted on ADI’s website is the AD9694, a quad, 14-bit, 500 Msample/sec analogue-to-digital converter (ADC). The device has an on-chip buffer and a sample-and-hold circuit designed for low power, small size, and ease of use. This device is designed for sampling wide bandwidth analogue signals of up to 1.4 GHz. The AD9694 is optimized for wide input bandwidth, high sampling rate, excellent linearity, and low power in a small package.
ADI intends the 9694 for use in general communications; in diversity multiband, multimode digital receivers for 3G/4G, W-CDMA, GSM, LTE, LTE-A; in general-purpose software radios and ultrawideband satellite receivers; in instrumentation, and in radars and signal intelligence (SIGINT). More on details from the product page, below.