The document describes the features and characteristics of the ADF4216/ADF4217/ADF4218 dual RF PLL frequency synthesizers. It features selectable charge pump currents, selectable dual modulus prescaler, 3-wire serial interface, and is suitable for applications such as wireless handsets, wireless base stations, wireless LANs, communication test equipment, and CATV equipment.
The ADF4216/ADF4217/ADF4218 are dual frequency synthesizers designed to implement local oscillators (LOs) in the upconversion and downconversion sections of wireless receivers and transmitters. These devices consist of a low-noise digital Phase Frequency Detector (PFD), a precision charge pump, programmable reference dividers, A and B counters, and a dual-modulus prescaler. Control of all on-chip registers is managed via a simple 3-wire serial interface.
| RF Input Frequency (ADF4216) | 0.2/1.2 GHz |
|---|---|
| RF Input Frequency (ADF4217) | 0.2/2.0 GHz |
| RF Input Frequency (ADF4218) | 0.5/2.5 GHz |
| IF Input Frequency | 45/550 MHz |
| Power Supply Range | 2.7 V to 5.5 V |
| Operating Temperature Range | -40 °C to +85 °C |
| Package Description | Thin Shrink Small Outline Package (TSSOP) |
They are used in wireless handsets, base stations, wireless LANs, communications test equipment, and CATV equipment.
The maximum allowable prescaler output frequency is 165 MHz for the ADF4216 and 200 MHz for the ADF4217 and ADF4218.
Control of all on-chip registers is via a simple 3-wire serial interface.