Analog Devices AD9540/PCBZ

Evaluation Board For 655 MHz Low Jitter Clock Generator

ANALOG DEVICES AD9540/PCBZ650 MHZ CLOCK GENERATOR EVAL BD.

650 MHZ CLOCK GENERATOR EVAL BD.

BOARD EVAL CLK GEN SYNTH 48LFCSP

The AD9540 supports a variety of functions including signal synthesis and low jitter clock generation useful in a wide variety of applications. The device features high performance PLL circuitry including a flexible 200 MHz Phase Frequency Detector and a digitally controlled charge pump current. The device also provides a low jitter, 655 MHz CML mode (PECL compatible) output driver with programmable slew rates. External VCO rates up to 2.7 GHz are supported. An onboard 400 MSPS DDS provides extremely fine tuning resolution and phase programmability. Information is loaded into the AD9540 via a serial I/O port which has a device write speed of 25Mbit/sec. The AD9540 frequency divider block can also be programmed to support a spread spectrum clocking mode. The AD9540 is specified to operate over the extended automotive range of -40°C to +85°C. Applications Clocking high performance data converters Basestation clocking applications Network (SONET/SDH) clocking Gigabit Ethernet (GbE) clocking Instrumentation clocking circuits