LMX2492 500MHz to 14GHz Wideband, Low Noise Fractional N PLL With Ramp/Chirp Generation | TI.com

LMX2492 (ACTIVE)

500MHz to 14GHz Wideband, Low Noise Fractional N PLL With Ramp/Chirp Generation

500MHz to 14GHz Wideband, Low Noise Fractional N PLL With Ramp/Chirp Generation - LMX2492
 

Description

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.

Features

  • –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

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Parametrics Compare all products in RF PLLs and Synthesizers

 
Output Frequency (Min) (MHz)
Output Frequency (Max) (MHz)
Normalized PLL Phase Noise (dBc/Hz)
1/f Noise (10 kHz offset at 1 GHz carrier) (dBc/Hz)
Current Consumption (mA)
VCC (V)
Integrated VCO
Pin/Package
LMX2492 LMX2485E LMX2491 LMX2582 LMX2592 LMX2594 LMX2595
500     50     500     20     20     10     100    
14000     3000     6400     5500     9800     15000     19000    
-227     -210     -227     -231     -231     -236     -236    
-120     -104     -120     -126     -126     -129     -129    
60     3.3     60     250     250     340     340    
3.15 to 3.45     2.5 to 3.6     3.15 to 3.45     3.15 to 3.45     3.15 to 3.45     3.15 to 3.45     3.15 to 3.45    
No     No     No     Yes     Yes     Yes     Yes    
24WQFN     24WQFN     24WQFN     40VQFN     40VQFN     40VQFN     40VQFN    

Other qualified versions of LMX2492

Version Part Number Definition
Automotive LMX2492-Q1 Q100 devices qualified for high-reliability automotive applications targeting zero defects

Featured tools and software

WEBENCH® Designer LMX2492

Recommend Input Frequency Tunable Output Frequency
   
Input Frequency Min Output Frequency
 MHz  MHz
 
Max Output Frequency
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Channel Spacing
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