• April 25, 2019

The AD is a numerically controlled oscillator The AD offers the user a variety of output .. may not meet the specifications listed in the data sheet. AD evaluation board (EVAL-CNSDZ) is designed to help customers in the AD data sheet available from Analog Devices and should be. Part Number: AD, Maunfacturer: Analog Devices, Part Family: AD, File type: PDF, Document: Datasheet – semiconductor.

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To load data into the AD, PC7 is held low after the first eight bits are transferred and a second serial write operation is performed to the AD ADIsimDDS uses mathematical equations to model and illustrate the overall performance of the selected device.

Note however that continuous writes to the same frequency register are not recommended. This determines the magnitude of the full-scale DAC current.

Datashert the packing option of the model Tube, Reel, Tray, etc. This is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this ad834 is not implied. A minimum etch technique is generally best for ground planes because it gives the best shielding.

Similarly, there is a latency associated with each asynchronous write operation. Also, please note the warehouse location for the product ordered. The output from the DAC can be filtered externally before being applied to the comparator input. Similarly, with a 1 MHz clock rate, the AD can datasheett tuned to 0. Traces on opposite sides of the board should run at right angles to each other to reduce the effects of feedthrough through the board.


Fundamentals of Frequency Synthesis, Part 2: It is important to note the scheduled dock date on the order entry screen.

For example, the DAC can be powered down when a clock output is being generated. The digital implementation is no different. The serial clock can have a satasheet of 40 MHz maximum.

20 mW Power, 2.3 V to 5.5 V, AD9834 Data Sheet

Synchronized Synthesizers Aid Multichannel Systems. See Table 9 to select dataxheet phase register. The wideband SFDR gives the magnitude of the largest harmonic or spur relative to the magnitude of the fundamental frequency in the 0 to Nyquist bandwidth. Sections of the device that are not being used can be powered down to minimize the current consumption.

Pin Function Descriptions Pin No. This is a high impedance current source.

datasheeet The comparator can accept signals in the range of datasehet mV p-p to 1 V p-p. Fast switching signals, such as clocks, should be shielded with digital ground to avoid radiating noise to other sections of the board. The SFDR refers to the largest spur or harmonic present in the band of interest.

When the AD is powered up, the part should be reset. Status Status indicates the current lifecycle of the product.

This control bit indicates whether the 14 bits being loaded are being transferred to the 14 MSBs or 14 LSBs of the addressed frequency register. The model has been scheduled for obsolescence, but may still be purchased for a limited time.


D Page 27 of 29 The AD has a standard serial interface that allows the part to interface directly with several microprocessors. It also has datawheet on-board comparator that allows a square wave to be produced for clock generation. International prices may vary due to local duties, taxes, fees and exchange rates.

Table 6 describes the individual bits of the control register.

20 mW Power, V to V, AD Data Sheet

This is accomplished by using the on-board self-biasing comparator that converts the sinusoidal signal of the Dattasheet to a square wave. The serial clock can be continuous, or it can idle high or low between write operations.

This is outlined in Table 8 and Table 9. RESET resets appropriate internal registers to zero; this corresponds to an analog output of midscale. An Evaluation Board is a board engineered to show the performance of the model, the part is included on the board. Using the full resolution of the phase accumulator is impractical and unnecessary because it requires a look-up table of entries. Ask The Application Engineer— Trademarks and registered trademarks are the property of their respective owners.

The comparator reference voltage is the time average of the signal applied to VIN.