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AD9834

Analog Devices
Part Number AD9834
Manufacturer Analog Devices
Description 75 MHz Complete DDS
Published Mar 24, 2005
Detailed Description Data Sheet 20 mW Power, 2.3 V to 5.5 V, 75 MHz Complete DDS AD9834 FEATURES Narrow-band SFDR >72 dB 2.3 V to 5.5 V pow...
Datasheet PDF File AD9834 PDF File

AD9834
AD9834

Overview
Data Sheet 20 mW Power, 2.
3 V to 5.
5 V, 75 MHz Complete DDS AD9834 FEATURES Narrow-band SFDR >72 dB 2.
3 V to 5.
5 V power supply Output frequency up to 37.
5 MHz Sine output/triangular output On-board comparator 3-wire SPI® interface Capability for phase modulation and frequency modulation is provided.
The frequency registers are 28 bits; with a 75 MHz clock rate, resolution of 0.
28 Hz can be achieved.
Similarly, with a 1 MHz clock rate, the AD9834 can be tuned to 0.
004 Hz resolution.
Frequency and phase modulation are affected by loading registers through the serial interface and toggling the registers using software or the FSELECT pin and PSELECT pin, respectively.
Extended temperature range: −40°C to +105°C Power-down option 20 mW power consumption at 3 V 20-lead TSSOP APPLICATIONS The AD9834 is written to using a 3-wire serial interface.
This serial interface operates at clock rates up to 40 MHz and is compatible with DSP and microcontroller standards.
The device operates with a power supply from 2.
3 V to 5.
5 V.
The analog and digital sections are independent and can be run Frequency stimulus/waveform generation from different power supplies, for example, AVDD can equal Frequency phase tuning and modulation 5 V with DVDD equal to 3 V.
Low power RF/communications systems Liquid and gas flow measurement Sensory applications: proximity, motion, and defect detection Test and medical equipment GENERAL DESCRIPTION The AD9834 is a 75 MHz low power DDS device capable of The AD9834 has a power-down pin (SLEEP) that allows external control of the power-down mode.
Sections of the device that are not being used can be powered down to minimize the current consumption.
For example, the DAC can be powered down when a clock output is being generated.
The part is available in a 20-lead TSSOP.
producing high performance sine and triangular outputs.
It also has an on-board comparator that allows a square wave to be produced for clock generation.
Consuming only 20 mW of...


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