TRF3765 - 300M-4800MHz Low Noise Integer-N/Fractional-N PLL with Integrated VCO and up to 8 Outputs

The TRF3765 is a wideband Integer-N/Fractional-N frequency synthesizer with an integrated, wideband voltage-controlled oscillator (VCO). Programmable output dividers enable continuous frequency coverage from 300 MHz to 4.8 GHz. Four separate differential, open-collector RF outputs allow multiple devices to be driven in parallel without the need of external splitters.

The TRF3765 also accepts external VCO input signals and allows on/off control through a programmable control output. For maximum flexibility and wide reference frequency range, wide-range divide ratio settings are programmable and an off-chip loop filter can be used.

The TRF3765 is available in an RHB-32 QFN package.

• Output Frequencies: 300 MHz to 4.8 GHz
• Low-Noise VCO: –133 dBc/Hz
  (1-MHz Offset, f_OUT = 2.65 GHz)
• 13-/16-Bit Reference/Feedback Divider
• 25-Bit Fractional-N and Integer-N PLL
• Low RMS Jitter: 0.35 ps
• Input Reference Frequency Range:
  0.5 MHz to 350 MHz
• Programmable Output Divide-by-1/-2/-4/-8
• Four Differential LO Outputs
• External VCO Input with Programmable VCO
  On/Off Control