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 phase accumulator in the AD is implemented with 28 bits. Phase Offset Register 0.
AD 11 m W Power, 2. Temperature Range This is the acceptable operating range of the device. The write to the frequency register occurs after both words have been loaded. Ask The Application Engineer— For example, the analog section af9834 be operated at 5 V, and the digital section can be operated at 3 V, or vice versa.
AD Datasheet pdf – Low Power, + V to + V, 50 MHz Complete DDS – Analog Devices
Using the full resolution of the phase accumulator is impractical and unnecessary because it requires a look-up table of entries. Clock feedthrough refers to the magnitude of the MCLK signal relative to the fundamental frequency in the output spectrum of the AD The internal digital section of the AD is operated at 2. The AD is also suitable for signal generator applications.
The DAC output should be filtered appropriately before being applied to the comparator to improve jitter. The device operates with a power supply from 2. The AD is written to using a 3-wire serial interface. Output Compliance The output compliance refers to the maximum voltage that can be generated at the output of the DAC to meet the specifications. In addition to the generation of datasheett RF signal, the chip is fully capable of a broad range of simple and complex modulation schemes.
The specific part is obsolete and no longer available. When FSYNC is taken low, the internal logic is informed that a new word is being loaded into the device.
The model is currently being produced, and generally available for purchase and sampling. 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. We do take orders for items that are not in stock, so delivery may be scheduled at a future date.
This is useful if the complete bit resolution is not required. Model The model number is a specific version of a generic darasheet can be purchased or sampled. In dtasheet case, the output is no longer sinusoidal. Table 6 describes the individual bits of the control register.
AD Datasheet and Product Info | Analog Devices
Sine Wave The AD builds the output based on this simple equation. This is outlined in Table 8 and Table 9. View Detailed Reference Design Information. An on-board regulator steps down the voltage applied at DVDD to 2.
For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. Refer to the AN Satasheet Note for more information. One frequency represents the space frequency, and the other represents the mark frequency. These modulation schemes are fully implemented in the digital domain, allowing accurate and simple realization of complex modulation algorithms using DSP techniques.
B Changes to Comparator Datashete D Page 10 of 29 Note however, that consecutive bit writes to the same frequency register are not allowed, switch between frequency registers to do this type of function. Sections of the device that are not being used can be powered down to minimize the current consumption.
20 mW Power, 2.3 V to 5.5 V, AD9834 Data Sheet
The DAC can be powered down through hardware or software. Good decoupling is important. Due to environmental concerns, ADI offers many of our products in lead-free versions. Documents Flashcards Grammar checker. It also has an on-board comparator that allows a square wave to be produced for clock generation. All About Direct Digital Synthesis. Similarly, with a 1 MHz clock rate, the AD can be tuned to ad983. 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.
Refer to Table The frame sync signal is available on Pin SC2, but needs to be inverted before being applied to the AD This serial interface operates at clock rates up to 40 MHz and is compatible with DSP and microcontroller standards.
D Changes to Table The different functions and the various output options from the AD are described in more detail in the Frequency and Phase Registers section. The synchronizing clock remains active, meaning that the selected frequency and phase registers can also be changed either at the pins or by using the control bits.
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. Indicates the packing option of the model Tube, Reel, Tray, etc.
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