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LTC6947 - Ultralow Noise 0.35GHz to 6GHz Fractional-N Synthesizer

Description

The LTC®6947 is a high performance, low noise, 6GHz phase-locked loop (PLL), including a reference divider, phase-frequency detector (PFD), ultralow noise charge pump, fractional feedback divider, and VCO output divider.

Features

  • n LTC6947 Ultralow Noise 0.35GHz to 6GHz Fractional-N Synthesizer.

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Full PDF Text Transcription

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Features n LTC6947 Ultralow Noise 0.35GHz to 6GHz Fractional-N Synthesizer Description The LTC®6947 is a high performance, low noise, 6GHz phase-locked loop (PLL), including a reference divider, phase-frequency detector (PFD), ultralow noise charge pump, fractional feedback divider, and VCO output divider. The fractional divider uses an advanced, 4th order Δ∑ modulator which provides exceptionally low spurious levels. This allows wide loop bandwidths, producing extremely low integrated phase noise values. The programmable VCO output divider, with a range of 1 through 6, extends the output frequency range. The differential, low-noise output buffer has user-programmable output power ranging from –4.3dBm to +4.5dBm, and may be muted through either a digital input pin or software.
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