This document is a datasheet for the ADF4154 fractional-N frequency synthesizer. It features an RF bandwidth of up to 4 GHz, a power supply range of 2.7 V to 3.3 V, and an extended tuning voltage capability. The product is suitable for applications such as mobile wireless base stations, wireless handsets, CATV equipment, and wireless LANs.
The ADF4154 fractional‑N frequency synthesizer integrates a low‑noise digital phase‑frequency detector, programmable charge pump, and dual‑modulus prescaler. It operates from a 2.7 V to 3.3 V supply and supports a 3‑wire serial interface, digital lock detect, and power‑down mode. The device is pin‑compatible with several earlier AD synthesizers and includes a fast‑lock timer that allows the PLL to stay in wide‑bandwidth mode for a programmable period.
Typical applications include base stations for mobile radio (WiMAX, GSM, CDMA, etc.), wireless handsets, CATV equipment, WLANs, and communications test equipment. The datasheet provides detailed specifications, timing characteristics, absolute maximum ratings, pin configuration, and typical performance graphs such as phase‑noise plots and lock‑time curves.
| RF Input Frequency | 0.5 GHz – 4.0 GHz |
|---|---|
| RF Input Power | -8 dBm to 0 dBm |
| Reference Input Frequency | 10 MHz – 250 MHz |
| Supply Voltage (AVoo) | 2.7 V – 3.3 V |
| Low Power Sleep Mode Current | 1 pA typ |
| Phase Detector Frequency | 32 MHz max |
| Output High Voltage (Vou) | 14 V min |
| ESD Rating | < 2 kV |
The device operates from 2.7 V to 3.3 V for the main analog supply (AVoo).
The ADF4154 can accept RF input frequencies up to 4.0 GHz.
Yes, it includes a fast‑lock mode with a programmable timer that keeps the PLL in wide‑bandwidth mode.
The device is rated for less than 2 kV of electrostatic discharge.