The ADF4368 is a high-performance, ultra-low jitter, integer-N and fractional-N phase-locked loop (PLL) with integrated VCO ideally suited for frequency conversion applications. It can generate frequencies from 800 MHz to 12.8 GHz and does not require an internal doubler to generate the desired output frequency, which eliminates the need for sub-harmonic filters. The Σ-Δ modulator includes a 25-bit fixed modulus that allows hertz frequency resolution and an additional 17-bit variable modulus, which allows even finer resolution and flexibility for frequency planning. It requires DC supplies of 3.3 V and 5 V.
The ADF4368 eases development time with a simplified serial-peripheral interface (SPI) register map, external SYNC input, and repeatable multichip phase alignment both in integer mode and fractional mode. It has a jitter of less than 30 fs and a noise floor of -160 dBc/Hz (at 12.8 GHz). The synthesizer uses the SYNC input or EZSync™ to support multiple frequency conversions systems, such as MIMO or phased array applications.
ADF4368 - Analog Devices
Applications
Features
Frequency | 0.8 to 12.8 GHz | PLL Type | Fractional-N, Integer-N |
|---|---|
Synthesizer Type | Fixed Frequency |
Resolution | 8 bits |
Step Size | 1 ps |
Output Power | 9 dBm |
Interface | SPI |
Supply Voltage | 3.3 or 5 V |
Current |
185 to 210 mA |
Operating Junction Temperature | −40°C to +125°C |
Package | 48-lead, 7 mm × 7 mm LGA |
