DDS AD9850 Signal Generator Module 0-40MHz Sine Wave and 2 Square Wave Output IC

AD9850 DDS Signal Generator Module is one of the small, low-cost boards to generate analog signals. This integrated board can be controlled through a microcontroller and can be digitally programmed using Direct Digital Synthesis Technology (DSS). AD9850 DDS Signal Generator Module is equipped with an AD9850 IC, a powerful Oscillator of 125MHz, and a DSS synthesizer. It operates at a very low power supply, thus finding applications in many small self-assembly projects to produce square and sine waves.

 Pin Configuration

• Input/Output pins: These are 8-bit data pins used to load data up to 32-bit frequency and 8-bit phase/control word. D7(MSB) also serves the purpose of loading a 40-bit serial data word.
• W-CLK: A Word Load Clock is used to synchronize and load words serially or through parallel transmission.
• FQ-UD: Frequency Update is used to update the frequency in the input data register when the clock has a rising edge. After updating, it reset the pointer to the word 0
• DATA: This pin is connected to the D7 input pin. It is used to load serial data.
• RESET: A master RESET is used to clear all the registers except for the IC’s input register by putting it into a HIGH state. Moreover, the outputs of DAC will be converted to Cosine 0 after some clocks.

AD9850 Features and Specifications

• Operating Voltage: 3.3 – 6 Volts
• Oscillator Frequency: 125 MHz
• Output Frequency: 0 – 40 MHz
• Operational Temperature: -40 – 850C
• Source/Sink Continuous Current: 0.005 Amperes
• DAC Current: 0.03 Amperes
• Power Dissipation(125 MHz, 5V): 380 mWatts
• Power Dissipation(110 MHz, 3.3V): 110 mWatts

Detailed Features

• DAC with Spurious Free Dynamic Range to specify the generator’s performance
• It contains a power-down function for a short boot time.
• Data transmission can either be parallel or serial.
• Power Dissipation depends on the power supply voltage.
• Four Analog signal outputs i.e., Sine-Wave 1, Sine-Wave 2, Square-Wave 1, and Square-Wave 2
• A comparator to generate less jittering in square wave output
• Direct Digital Synthesizer is based on CMOS Technology for better functionality and performance.
• A small high-performance module with a surface-mount package to be operated at industrial temperature