Overview
The AD9852ASVZ from Analog Devices Inc. is a highly integrated direct digital synthesis (DDS) IC designed to address a wide range of applications. It features an advanced DDS core with a 48-bit phase accumulator, providing a 1 μHz tuning resolution with a 300 MHz system clock. The device includes a programmable reference clock multiplier, an inverse sinc filter, a digital multiplier, two 12-bit/300 MHz DACs, a high-speed analog comparator, and interface logic. This flexibility makes it suitable for various roles such as a synthesized local oscillator (LO), agile clock generator, and FSK/BPSK modulator.
Key Specifications
| Parameter | Value | Unit | Conditions |
|---|---|---|---|
| Frequency Resolution | 1 μHz | - | With 300 MHz SYSCLK |
| Maximum Output Frequency | 150 MHz | - | - |
| System Clock Frequency | Up to 300 MHz | - | - |
| Phase Accumulator Bits | 48 bits | - | - |
| DAC Resolution | 12 bits | - | - |
| Supply Voltage | 3.3 V ± 5% | V | - |
| Operating Temperature Range | −40°C to +85°C | °C | - |
| Package Type | 80-lead TQFP | - | - |
| Residual Phase Noise (AOUT = 5 MHz, External Clock = 30 MHz) | 140 dBc/Hz @ 1 kHz Offset | dBc/Hz | - |
| Clock Generator Output Jitter (5 MHz AOUT) | 23 ps rms | ps | - |
Key Features
- High-Speed DDS Core: Provides 48-bit frequency resolution and 1 μHz tuning resolution with a 300 MHz system clock.
- Programmable Reference Clock Multiplier: Internally generates the 300 MHz system clock from a lower frequency external reference clock.
- Digital Multiplier and DACs: Supports programmable amplitude modulation, on/off output shaped keying, and precise amplitude control of the cosine DAC output.
- High-Speed Analog Comparator: Allows conversion of the cosine wave output to a square wave for agile clock generator applications.
- Chirp Functionality: Enables wide bandwidth frequency sweeping applications.
- FSK/BPSK Modulation: Supports single-pin conventional FSK and enhanced spectral qualities of ramped FSK.
- Advanced CMOS Technology: Operates on a single 3.3 V supply using 0.35 μ CMOS technology.
Applications
- Communications: Agile local oscillator (LO) in communication systems.
- Radar Systems: High-speed signal generation for radar applications.
- Clock Generation: Agile clock generator for various digital systems.
- Modulation: FSK/BPSK modulation for data transmission.
- Frequency Sweeping: Wide bandwidth frequency sweeping applications using chirp functionality.
Q & A
- What is the frequency resolution of the AD9852ASVZ?
The AD9852ASVZ has a frequency resolution of 1 μHz with a 300 MHz system clock.
- What is the maximum output frequency of the AD9852ASVZ?
The maximum output frequency is up to 150 MHz.
- What is the supply voltage for the AD9852ASVZ?
The supply voltage is 3.3 V ± 5%.
- What is the operating temperature range of the AD9852ASVZ?
The operating temperature range is −40°C to +85°C.
- What package type is the AD9852ASVZ available in?
The AD9852ASVZ is available in an 80-lead TQFP package.
- Does the AD9852ASVZ support FSK/BPSK modulation?
Yes, it supports single-pin conventional FSK and enhanced spectral qualities of ramped FSK.
- Can the AD9852ASVZ generate a square wave output?
Yes, the internal comparator can convert the cosine wave output to a square wave.
- What is the residual phase noise of the AD9852ASVZ at 1 kHz offset?
The residual phase noise is 140 dBc/Hz at 1 kHz offset.
- What is the clock generator output jitter for a 5 MHz AOUT?
The clock generator output jitter is 23 ps rms for a 5 MHz AOUT.
- Does the AD9852ASVZ support chirp functionality?
Yes, it supports wide bandwidth frequency sweeping applications using chirp functionality.
