ADF4157BRUZ

ADF4157 is a 6GHz fractional-N frequency synthesizer with a 25bit fixed modulus, allowing subhertz frequency resolution at 6GHz. It consists of a low noise digital phase frequency detector (PFD), a precision charge pump, and a programmable reference divider. There is a Σ-Δ based fractional interpolator to allow programmable fractional-N division. The INT and FRAC values define an overall N divider, N = INT + (FRAC/225). It features cycle slip reduction circuitry, which leads to faster lock times without the need for modifications to the loop filter. It is widely used in application such as satellite communications terminals, radar equipment, instrumentation equipment, personal mobile radio (PMR), base stations for mobile radio, wireless handsets etc.

• Power supply range is 2.7V to 3.3V
• Separate VP allows extended tuning voltage
• Programmable charge pump currents
• 3-wire serial interface, digital lock detect, power-down mode
• Cycle slip reduction for faster lock times
• Pin compatible with ADF4110/ADF4111/ADF4112/ADF4113/ADF4106/ADF4153/ADF4154/ADF4156
• Normalized 1/f noise is -110dBc/Hz typical
• Operating temperature is -40°C to +85°C
• Package style is 16-lead TSSOP

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