The ADF4355-3 allows implementation of fractional-N or integer-N phase-locked loop (PLL) frequency synthesizers when used with an external loop filter and an external reference frequency. A series of frequency dividers at another frequency output permits operation from 51.5625 MHz to 6600 MHz.
The ADF4355-3 has an integrated VCO with a fundamental output frequency ranging from 3400 MHz to 6800 MHz. In addition, the VCO frequency is connected to divide by 1, 2, 4, 8, 16, 32, or 64 circuits that allow the user to generate RF output frequencies as low as 51.5625 MHz. For applications that require isolation, the RF output stage can be muted. The mute function is both pin and software controllable.
- RF output frequency range: 51.5625 MHz to 6600 MHz
- Fractional-N synthesizer and integer-N synthesizer
- High resolution 38-bit modulus
- Low phase noise, voltage controlled oscillator (VCO)
- Programmable divide by 1, 2, 4, 8, 16, 32, or 64 output
- Analog, digital, charge pump, and VCO power supplies: 3.3 V
- Logic compatibility: 1.8 V
- Programmable dual modulus prescaler of 4/5 or 8/9
- Programmable output power level
- RF output mute function
- 3-wire serial interface
- Analog and digital lock detect
