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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The load resistors can be any value required, as long as the full-scale voltage developed across it does not exceed the voltage compliance range. With phase shift keying, the carrier frequency is phase shifted, the phase being altered by an amount that is related to the bit stream that is input to the modulator.

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

Exposure to absolute maximum rating conditions for extended periods datzsheet affect device reliability. This is the acceptable operating range of the device. Obviously, consideration must be given to the relationship of ddatasheet selected output frequency and the reference clock frequency to avoid unwanted and unexpected output anomalies. Traces on opposite sides of the board should run at right angles to each other to reduce the effects of feedthrough through the board.

A graphical representation of the sampled spectrum, with aliased images, is shown in Figure This results in intermediate updates during the writes. The part can be used to datashee simple modulation such as FSK. Frequently Asked Questions 1. A minimum etch technique datsaheet generally best for ground planes because it gives the best shielding. This is outlined in Table 8 and Table 9.

An example of a complete bit write is shown in Table The AD has an internal 1. The model has not been released to general production, but samples may be available. Phase information maps directly into amplitude; therefore, the SIN ROM uses the digital phase information as an address to a look-up datasneet and converts the phase information into amplitude. We do take orders for items that are not in stock, so delivery may be scheduled at a future date. It is necessary only to have sufficient phase resolution such that the errors due to truncation are smaller than the resolution of the bit DAC.


Due to environmental concerns, ADI offers many of our products in lead-free versions. Temperature ranges may vary by model.

AD Datasheet pdf – Low Power, + V to + V, 50 MHz Complete DDS – Analog Devices

ADI has always placed the highest emphasis on delivering products that ad99834 the maximum levels of quality and reliability. The frequency registers are 28 bits; with a 75 MHz clock rate, resolution of 0. International prices may differ due to local duties, taxes, fees and exchange rates. Data is transmitted MSB first.

This is explained further in Datashdet The AD is also suitable for signal generator applications. Software is available with the evaluation board, which allows the user ae9834 easily program the AD Specifically, its output spectrum contains the fundamental plus aliased signals images that occur at multiples of the reference clock frequency and the selected output frequency. Specifications subject to change without notice. Temperature Range This is the acceptable operating range of the device.

Didn’t find what you were looking for? If DVDD is equal to or less than dtasheet. However, these are nonlinear and not easy to generate except through piecewise construction. Digital and analog ground planes should only be joined in one place. Pin Count is the number of pins, balls, or pads on the device. The full-scale output current can be adjusted for optimum power and external load requirements using a single external resistor RSET. If the user wants to alter the entire contents of a frequency register, two consecutive writes to the same address must be performed because the frequency registers are 28 bits wide.


Because of the various output options available from the part, the AD can be configured to suit a wide variety of applications.

The Datashwet can be configured for either single-ended or dztasheet operation. Ask The Application Engineer— For a minimum supply of 2. RESET does not reset the phase, frequency, or control registers.

B Changes to Comparator Section Each of these subcircuits is discussed in the Circuit Description section. SCLK should idle high between the two write operations. This serial interface operates at clock rates up to 40 MHz and is compatible with DSP and microcontroller standards. For specifications that do not specify a grade, the value applies to both grades. The different functions and the various output options from the AD are described in more detail in the Frequency and Phase Registers section.

This is accomplished by using the on-board self-biasing comparator that xd9834 the sinusoidal signal of the DAC to a square wave. For example, the analog section can be operated at 5 V, and the digital section can be operated at 3 V, or vice versa.

See Table 9 to select a phase register. The synchronizing clock remains active, meaning that the selected frequency ratasheet phase registers can also be changed either at the pins or by using the control bits. Try to use the ATM during daylight hours.

Product Lifecycle Production At least one model within this product family is in production and available for purchase. Universal Changes to Features Section