Overview
The AD9852ASTZ is a highly integrated digital synthesizer produced by Analog Devices Inc. This device utilizes advanced Direct Digital Synthesis (DDS) technology, coupled with a high-speed, high-performance Digital-to-Analog Converter (DAC). It is designed to provide a wide range of functionalities, including agile local oscillator (LO) generation, clock generation, and modulation capabilities such as FSK and BPSK. The AD9852ASTZ operates on a single 3.3V supply and is specified to function over an extended industrial temperature range of −40°C to +85°C.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Frequency Resolution | 48-bit (1 μHz tuning resolution with 300 MHz SYSCLK) | |||
| Output Frequency Range | Up to 150 MHz | |||
| Reference Clock Frequency | 20 MHz / 30 MHz | |||
| REFCLK Multiplier | 4× to 20× | |||
| Phase Registers | Two 14-bit phase registers | |||
| Cosine DAC Resolution | 12-bit | |||
| Residual Phase Noise (AOUT = 5 MHz, External Clock = 30 MHz) | 140 dBc/Hz @ 1 kHz Offset | 138 dBc/Hz @ 10 kHz Offset | 142 dBc/Hz @ 100 kHz Offset | dBc/Hz |
| Clock Generator Output Jitter | 23 ps rms @ 5 MHz AOUT | 12 ps rms @ 40 MHz AOUT | 7 ps rms @ 100 MHz AOUT | ps rms |
Key Features
- Advanced DDS technology with a 48-bit phase accumulator, providing 1 μHz tuning resolution with a 300 MHz system clock.
- Internal high-speed, high-performance 12-bit DACs capable of generating output signals up to 150 MHz.
- Programmable reference clock multiplier (4× to 20×) to generate the 300 MHz system clock from a lower frequency external reference clock.
- Support for agile LO, clock generator, FSK, BPSK, and higher-order PSK modulation.
- Chirp functionality for wide bandwidth frequency sweeping applications.
- Static duty cycle control in high-speed clock generator applications using the internal comparator.
- Operates on a single 3.3V supply and is pin-for-pin compatible with the AD9854 single-tone synthesizer.
Applications
- Communications: Agile local oscillator (LO) in various communication systems.
- Radar: High-frequency signal generation for radar applications.
- Clock Generation: High-speed clock generation with precise control over duty cycle and frequency.
- Modulation: FSK, BPSK, and higher-order PSK modulation for various signal processing needs.
- Frequency Sweeping: Chirp functionality for wide bandwidth frequency sweeping applications).
Q & A
- What is the frequency resolution of the AD9852ASTZ?
The AD9852ASTZ has a 48-bit frequency resolution, providing 1 μHz tuning resolution with a 300 MHz system clock.
- What is the maximum output frequency of the AD9852ASTZ?
The maximum output frequency of the AD9852ASTZ is up to 150 MHz).
- How does the AD9852ASTZ generate its system clock?
The AD9852ASTZ can generate its 300 MHz system clock internally using a programmable reference clock multiplier (4× to 20×) from a lower frequency external reference clock).
- What modulation types are supported by the AD9852ASTZ?
The AD9852ASTZ supports FSK, BPSK, and higher-order PSK modulation).
- What is the operating temperature range of the AD9852ASTZ?
The AD9852ASTZ operates over an extended industrial temperature range of −40°C to +85°C).
- What is the power supply voltage for the AD9852ASTZ?
The AD9852ASTZ operates on a single 3.3V supply).
- Does the AD9852ASTZ support chirp functionality?
Yes, the AD9852ASTZ includes chirp functionality for wide bandwidth frequency sweeping applications).
- How many phase registers does the AD9852ASTZ have?
The AD9852ASTZ has two 14-bit phase registers).
- What is the resolution of the cosine DAC in the AD9852ASTZ?
The cosine DAC in the AD9852ASTZ has a 12-bit resolution).
- Can the AD9852ASTZ be used as a clock generator?
Yes, the AD9852ASTZ can be configured to serve as a high-speed clock generator with precise control over duty cycle and frequency).
