AD9830ASTZ

Series:	--
Packaging:	Tray
Part Status:	Active
Resolution (Bits):	10 b
Master fclk:	50MHz
Tuning Word Width (Bits):	32 b
Voltage - Supply:	4.75 V ~ 5.25 V
Operating Temperature:	-40°C ~ 85°C
Mounting Type:	Surface Mount
Package / Case:	48-LQFP
Supplier Device Package:	48-LQFP (7x7)
Base Part Number:	AD9830

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Direct Digital Synthesis (DDS)

Direct Digital Synthesis (DDS) is a digital frequency-generating technique which provides high-quality sinusoidal and triangular wave output capability and is used in a wide range of applications, such as test and measurement, communication, control and monitoring, audio, and control systems. The AD9830ASTZ is an ideal device for such applications because of its low power consumption, fast settling times, high resolution, and low output jitter.

AD9830ASTZ Application Field

The AD9830ASTZ is a low-power, programmable frequency synthesizer used to generate precise frequency signals. It can be used in test and measurement, communications, instrumentation, and audio applications. The AD9830ASTZ\'s output frequency can be programmed digitally, allowing for precision performance. It is capable of synthesizing sine or triangular waves of up to 130 MHz with 16-bit resolution.The AD9830ASTZ can also be used for periodic digital pulse generation, pulse width modulation (PWM), quadrature modulation and demodulation, frequency hopping, and fractional frequency synthesis. In addition, it can be used for automatic frequency control (AFC) and phase lock loops (PLLs). Furthermore, the device is also suitable for multiplexed data communication interfaces and digital audio systems.

AD9830ASTZ Working Principle

The AD9830ASTZ direct digital synthesizer (DDS) is based on a phase-accumulation architecture which uses a phase accumulator, a numerical-controlled oscillator (NCO), and a digital-to-analog (D/A) converter.The phase accumulator is used to generate a phase, which is in turn used to generate sine and cosine waves. The phase accumulator stores a number which is incremented or decremented in discrete steps by a programmable frequency word. The phase accumulator output is used as an address pointer to the NCO where it is used to address sinusoidal wave samples stored in memory. The output of the NCO is a sampled waveform representing a sinusoidal waveform whose frequency is determined by the rate at which the phase accumulator output is incremented or decremented. The output of the NCO is then fed to the D/A converter where it is converted into an analog signal. The D/A converter also contains a low-pass filter which is used to reduce the harmonic content of the output signal.

Conclusion

The AD9830ASTZ is an ideal direct digital synthesis device, due to its low power consumption, fast settling times, high resolution, and low output jitter. The device is suitable for use in a wide range of applications, such as test and measurement, communication, control and monitoring, audio, and control systems. It is capable of synthesizing sine or triangular waves of up to 130 MHz with 16-bit resolution, and can also be used for periodic digital pulse generation, pulse width modulation (PWM), quadrature modulation and demodulation, frequency hopping, and fractional frequency synthesis. Furthermore, the device is also suitable for multiplexed data communication interfaces and digital audio systems.

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