ADF41020 is a CMOS frequency synthesizer with a 24-bit input data register, 16/17 pre-dividers and 8/9 dividers, providing a frequency range of 0.2~10GHz.
The ADF41020 is an 18 GHz microwave PLL synthesizer designed for use in point‑to‑point radios, VSAT, test equipment, and other wireless infrastructure. It integrates a SiGe prescaler, programmable charge pump, and dual‑modulus prescaler, and can be combined with an external loop filter and VCO to create a complete PLL.
Key features include a 1.8 V/3 V SPI‑compatible serial interface, programmable dual‑modulus prescaler (8/9, 16/17, 32/33, 64/65), and a wide operating temperature range of –40 °C to +85 °C. The datasheet details electrical specifications, pin functions, timing characteristics, noise performance, and PCB design guidelines.
| RF Input Frequency | 4.0 – 18.0 GHz |
|---|---|
| AVop Power Supply | 2.85 – 3.15 V |
| Phase Detector Frequency | 100 MHz |
| Normalized Phase Noise Floor | -221 dBc/Hz (PLL Loop BW = 500 kHz) |
| Operating Temperature Range | -40 °C to +85 °C |
| Maximum Serial Clock Rate | 20 MHz |
The device supports RF input frequencies up to 18 GHz.
It operates from analog and digital supplies of 2.85 V to 3.15 V.
The serial clock may be run up to 20 MHz.
The ADF41020 is rated for –40 °C to +85 °C in industrial environments.