General Info - AD9467 - FMC -250EBZ

The AD9467 is a 16 - bit monolithic, IF sampling analog-to-digital converter (ADC). The board shipped to us has two good data sheets:

Datasheet - http://www.analog.com/media/en/technical-documentation/data-sheets/AD9467.pdf

Board Evaluation Guide - http://www.analog.com/media/en/technical-documentation/evaluation-documentation/UG-200.pdf

Back up two steps and define some important terms from the first sentence:

1) monolithic IC- A monolithic integrated circuit, in general, is a type of IC that is made on the surface of a single crystal semiconductor like a silicon wafer. A process called "planar technology must be used in the single block (monolith) and be interconnected to the insulating layer over the same body of the semiconductor to produce a solid integral monolithic IC.

2) Integrator - integrated based ADC. The input voltage is integrated, compared to a reference voltage, and converted into a digital representation. The integrator uses a reference capacitor which is chosen depending on the bandwidth of the signal. Wikipedia has a good link in its op-amp section explaining an inverting integrator. Replace the resistor connecting the positive input to the output of a differential amplifier and get an inverting amplifier.

3) IF - intermediate frequency sampling - essentially taking an input signal and mixing it with a signal produced by a local oscillator to get what is called a beat or difference frequency. From what I understand the signals are added/subtracted using the principle of superposition and the resulting frequency is more "powerful" in that it is more easily manipulated/amplified/analyzed for a specific application.

3) Wide bandwidth/bandwidth - the difference in the upper and lower frequencies in a set of frequencies. In the radio world, radio companies will purchase a given bandwidth that says they have the right to broadcast over a slice of frequency in the sound spectrum of the geographic location they are located in.

4) NOTES FROM DATASHEET*****"The ADC requires 1.8 V and 3.3 V power supplies and a low voltage differential input clock for full performance operation. No external reference or driver components are required for many applications. Data outputs are LVDS compatible (ANSI-644 compatible) and include the means to reduce the overall current needed for short trace distances. Figure 1. A data clock output (DCO) for capturing data on the output is provided for signaling a new output bit. The internal power-down feature supported via the SPI typically consumes less than 5 mW when disabled. Optional features allow users to implement various selectable operating conditions, including input range, data format select, and output data test patterns. The AD9467 is available in a Pb-free, 72-lead, LFCSP specified over the −40°C to +85°C industrial temperature range."****

 - low voltage differential input clock or the board uses low voltage differential signaling (LVDS) a physical layer characterization describing electrical components that can run aat very low power yet very high speeds - often in combination with twisted pair coaxial cable inputs that reduce electromagnetic interference from other sources.

-DCO - Data Clock Output -

- SPI - Serial Port Interfacing -