AD9831 Series

Direct Digital Synthesizer Waveform Generator

Catalog

Direct Digital Synthesizer Waveform Generator

Part	Voltage - Supply [Max]	Voltage - Supply [Min]	Supplier Device Package	Tuning Word Width (Bits)	Package / Case	Operating Temperature [Max]	Operating Temperature [Min]	Master fclk	Resolution (Bits)	Mounting Type
Analog Devices AD9831ASTZ-REEL	5.5 V	2.97 V	48-LQFP (7x7)	32 b	48-LQFP	85 °C	-40 °C	25 MHz	10 b	Surface Mount
Analog Devices AD9831AST-REEL	5.5 V	2.97 V	48-LQFP (7x7)	32 b	48-LQFP	85 °C	-40 °C	25 MHz	10 b	Surface Mount
Analog Devices AD9831ASTZ	5.5 V	2.97 V	48-LQFP (7x7)	32 b	48-LQFP	85 °C	-40 °C	25 MHz	10 b	Surface Mount
Analog Devices AD9831AST	5.5 V	2.97 V	48-LQFP (7x7)	32 b	48-LQFP	85 °C	-40 °C	25 MHz	10 b	Surface Mount

Catalog

Direct Digital Synthesizer Waveform Generator

Key Features

• 3 V/5 V Power Supply

• 25 MHz Speed

• On-Chip SINE Look-Up Table

• On-Chip 10-Bit DAC

• Parallel Loading

• Powerdown Option

• 72 dB SFDR

• 125 mW (5 V) Power Consumption

• 40 mW (3 V) Power Consumption

• 48-Pin TQFP

Description

This DDS device is a numerically controlled oscillator employing a phase accumulator, a sine look-up table and a 10-bit D/A converter integrated on a single CMOS chip. Modulation capabilities are provided for phase modulation and frequency modulation.Clock rates up to 25 MHz are supported. Frequency accuracy can be controlled to one part in 4 billion. Modulation is effected by loading registers through the parallel microprocessor interface.A powerdown pin allows external control of a powerdown mode. The part is available in a 48-pin TQFP package.