AD9851BRS

AD9851 is a highly integrated device that uses advanced DDS technology, coupled with an internal high speed, high performance D/A converter, and comparator, to form a digitally programmable frequency synthesizer and clock generator function. When referenced to an accurate clock source, this device generates a stable frequency and phase-programmable digitized analog output sine wave. This sine wave can be used directly as a frequency source, or internally converted to a square wave for agile-clock generator applications. This device provides five bits of programmable phase modulation resolution to enable phase shifting of its output in increments of 11.25°. It is used in application such as frequency/phase-agile, sinewave synthesis, clock recovery and locking circuitry for digital communications, digitally controlled ADC encode generator, agile local oscillator applications in communications, quadrature oscillator, CW, AM, FM, FSK, MSK mode transmitter etc.

• 180MHz clock rate with selectable 6xreference clock multiplier
• SFDR is 43dB typical at 70MHz AOUT
• 32bit frequency tuning word
• Simplified control interface: parallel or serial asynchronous loading format
• 5bit phase modulation and offset capability
• Output jitter is 80ps (p-p) typical
• Single-supply operation is 2.7V to 5.25V
• Low power dissipation is 555mW at 180MHz
• Operating temperature is -40°C to +85°C
• Package style is 28-lead shrink small outline [SSOP]

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party