The ADF4107 frequency synthesizer is a local oscillator that can be used in wireless receivers and transmitters. It features a 7.0 GHz bandwidth, a power supply range of 2.7 V to 3.3 V, a separate charge pump supply (VP) for extended tuning voltage in 3 V systems, a programmable dual-modulus prescaler with options of 8/9, 16/17, 32/33, and 64/65, programmable charge pump currents, programmable antibacklash pulse width, a 3-wire serial interface, analog and digital lock detect, and hardware and software power-down modes.
The ADF4107 is a PLL frequency synthesizer with a 7 GHz bandwidth, supporting 2.7 V to 3.3 V power supplies and a separate charge‑pump supply. It includes a low‑noise phase‑frequency detector, programmable prescalers, A and B counters, and a 14‑bit reference counter, allowing flexible frequency division and lock detection.
The document provides a functional block diagram, pin configuration tables for TSSOP and LFCSP packages, absolute maximum ratings, timing characteristics, typical performance graphs, and interfacing guidelines for SPI‑compatible serial interfaces such as ADuC812 and ADSP‑21xx processors. PCB layout recommendations and an ordering guide are also included.
| RF Input Frequency | 1.0 – 7.0 GHz |
|---|---|
| RF Input Sensitivity | -5 /+5 dBm |
| Maximum Allowable Prescaler | 300 MHz |
| REFin Input Frequency | 20 – 250 MHz |
| Phase Detector Frequency | 104 MHz max |
| Analog Power Supply (AVpp) | 2.7 – 3.3 V |
| Operating Temperature Range (Industrial) | -40 °C to +85 °C |
The maximum allowable serial clock rate is 20 MHz, giving an update rate of up to 833 kHz.
The device operates from –40 °C to +85 °C for the industrial version.
The typical high‑value charge‑pump current is 5 mA.