AD 9851 Module DDS Singnal Generater Module Sine Wave Square Wave 180 MHz SITIME

AD 9851 Module DDS Singnal Generater Module Sine Wave Square Wave 180 MHz
Features:
- CMOS 180 MHz
- DDS/DAC Synthesizer
- 180 MHz Clock Rate with Selectable 63 Reference Clock
- Multiplier,adopts 30 Mhz SITIME
- On-Chip High Performance 10-Bit DAC and High Speed
- Comparator with Hysteresis
- SFDR >43 dB @ 70 MHz AOUT
- 32-Bit Frequency Tuning Word
- Simplified Control Interface: Parallel or Serial
- Asynchronous Loading Format
- 5-Bit Phase Modulation and Offset Capability
- Comparator Jitter <80 ps p-p @ 20 MHz
- +2.7 V to +5.25 V Single Supply Operation
- Low Power: 555 mW @ 180 MHz
- Power-Down Function, 400 mW @ +2.7 V
- Ultrasmall 28-Lead SSOP Packaging
Applications:
- Frequency/Phase-Agile Sine Wave Synthesis
- Clock Recovery and Locking Circuitry for Digital
- Communications
- Digitally Controlled ADC Encode Generator
- Agile L.O. Applications in Communications
- Quadrature Oscillator
- CW, AM, FM, FSK, MSK Mode Transmitter
Comparasion of AD 9851 and AD 9850:
Main Features:
   - Modules can output sine and square wave, two sine and two square-wave output.
      AD9850: 0-40MHz
      AD9851: 0-70MHz
      After the 20-30MHz frequency harmonics increases, the waveform will be less and less clean.
      Square Wave: 0-1MHz
   - The use of 70MHz low pass filter, the waveform better than the SN
   - Parallel and serial data input can be selected via a jumper cap
   - Generate DA benchmark pin (PIN12) leads, easy to do the output waveform amplitude adjustment application.
   - Comparator reference input voltage generated by the variable resistor, resistance can be adjusted to the different duty cycle square wave
   - AD9850 module 125MHz active crystal, AD9851 module 30MHZ active crystal
The main difference between AD9850 and AD9851
   -  AD9850 clock frequency up to 125MHz, AD9851 clock frequency up to 180MHz. Than the maximum output frequency AD9851 AD9850 high.
   - AD9850 no 6 octave, AD9851 has