Analog Devices has launched a low-jitter synthesizer, demonstrating exceptional performance in GSPS data converter solutions.


ADI announced on the 22nd that it has launched a new 800MHz to 12.8GHz synthesizer for high-performance ultra-wideband data converter and synchronization applications.

The new ADF4377 synthesizer delivers exceptional signal-to-noise performance by providing a very clean clock source for the signal sampling process. This enables next-generation wideband receivers and transmitters to take advantage of higher dynamic range, improving receiver sensitivity and transmitter spectral purity.

This performance is achieved because the ADF4377 synthesizer delivers low jitter levels of less than 18 fs rms, combined with a low normalized in-band phase noise floor of -239 dBc/Hz, normalized 1/f noise of -147 dBc/Hz, and a wideband voltage-controlled oscillator (VCO) noise floor of -160 dBc/Hz.

The ADF4377 synthesizer is suitable for applications such as radar, instrumentation, and wideband receivers that require multiple data converters or mixed-signal front-end (MxFE) digitizers. The ADF4377 greatly simplifies alignment and calibration routines by enabling multiple data converter products to sample signals that are precisely aligned with each other.

This is a fundamental requirement for next-generation ultra-wideband multi-channel system operation and is achieved through the following characteristics: △Automatic reference for output synchronization; △Extremely well-matched reference for output delay over process (3ps part-to-part), voltage, and temperature (0.03ps/C); and △Sub-ps jitter-free reference (+/- 0.1ps) for output delay adjustment.

These features enable predictable and accurate multi-chip clock and SYSREF alignment. The ADF4377 synthesizer can also be paired with an IC that distributes pairs of reference and SYSREF signals to form a JESD204B and JESD204C subclass 1 solution. The ADF4377 integrates all necessary power supply bypass capacitors, saving board space on small boards.