Product details

Frequency (max) (MHz) 14000 Frequency (min) (MHz) 500 Normalized PLL phase noise (dBc/Hz) -227 1/f noise (10-kHz offset at 1-GHz carrier) (dBc/Hz) -120 Features Flexible ramp generation, Wideband Current consumption (mA) 60 Integrated VCO No Operating temperature range (°C) -40 to 125 Rating Automotive Lock time (µs) (typ) (s) Loop BW dependent
Frequency (max) (MHz) 14000 Frequency (min) (MHz) 500 Normalized PLL phase noise (dBc/Hz) -227 1/f noise (10-kHz offset at 1-GHz carrier) (dBc/Hz) -120 Features Flexible ramp generation, Wideband Current consumption (mA) 60 Integrated VCO No Operating temperature range (°C) -40 to 125 Rating Automotive Lock time (µs) (typ) (s) Loop BW dependent
WQFN (RTW) 24 16 mm² 4 x 4
  • –227 dBc/Hz Normalized PLL Noise
  • 500 MHz – 14 GHz Wideband PLL
  • 3.15 – 5.25 V Charge Pump PLL Supply
  • Versatile Ramp / Chirp Generation
  • 200 MHz Max Phase Detector Frequency
  • FSK / PSK Modulation Pin
  • Digital Lock Detect
  • Single 3.3 V Supply Capability
  • Automotive 125°C Q100 Grade 1 Qualification
  • Non-Automotive (LMX2492) Option
  • –227 dBc/Hz Normalized PLL Noise
  • 500 MHz – 14 GHz Wideband PLL
  • 3.15 – 5.25 V Charge Pump PLL Supply
  • Versatile Ramp / Chirp Generation
  • 200 MHz Max Phase Detector Frequency
  • FSK / PSK Modulation Pin
  • Digital Lock Detect
  • Single 3.3 V Supply Capability
  • Automotive 125°C Q100 Grade 1 Qualification
  • Non-Automotive (LMX2492) Option

The LMX2492/92-Q1 is a low noise 14 GHz wideband delta-sigma fractional N PLL with ramp and chirp generation. It consists of a phase frequency detector, programmable charge pump, and high frequency input for the external VCO. The LMX2492/92-Q1 supports a broad and flexible class of ramping capabilities, including FSK, PSK, and configurable piecewise linear FM modulation profiles of up to 8 segments. It supports fine PLL resolution and fast ramp with up to a 200 MHz phase detector rate. The LMX2492/92-Q1 allows any of its registers to be read back. The LMX2492/92-Q1 can operate with a single 3.3 V supply. Moreover, supporting up to 5.25 V charge pump can eliminate the need of external amplifier, leading to a simpler solution with improved phase noise performance.

The LMX2492/92-Q1 is a low noise 14 GHz wideband delta-sigma fractional N PLL with ramp and chirp generation. It consists of a phase frequency detector, programmable charge pump, and high frequency input for the external VCO. The LMX2492/92-Q1 supports a broad and flexible class of ramping capabilities, including FSK, PSK, and configurable piecewise linear FM modulation profiles of up to 8 segments. It supports fine PLL resolution and fast ramp with up to a 200 MHz phase detector rate. The LMX2492/92-Q1 allows any of its registers to be read back. The LMX2492/92-Q1 can operate with a single 3.3 V supply. Moreover, supporting up to 5.25 V charge pump can eliminate the need of external amplifier, leading to a simpler solution with improved phase noise performance.

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* Data sheet LMX2492/LMX2492-Q1 14 GHz Low Noise Fractional N PLL with Ramp/Chirp Generation datasheet (Rev. B) PDF | HTML 28 May 2015

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