LMX2487 Overview
The LMX2487 device is a low power, high performance delta-sigma fractional-N PLL with an auxiliary integer-N PLL. It is fabricated using TI’s advanced process. With delta-sigma architecture, fractional spurs at lower offset frequencies are pushed to higher frequencies outside the loop bandwidth.
LMX2487 Key Features
- 1 Quadruple Modulus Prescaler for Lower Divides
- RF PLL: 16/17/20/21 or 32/33/36/37
- IF PLL: 8/9 or 16/17
- Advanced Delta Sigma Fractional pensation
- 12-Bit or 22-Bit Selectable Fractional Modulus
- Up to 4th Order Programmable Delta-Sigma Modulator
- Improved Lock Times
- Fastlock / Cycle Slip Reduction With SingleWord Write to Change Frequencies
- Integrated Time-Out Counter
- Wide Operating Range
