LMX2485
Overview
The LMX2485 device is a low power, high performance delta-sigma fractional-N PLL with an auxiliary integer-N PLL. The device is fabricated using Texas Instruments' advanced process.
- 1 Quadruple Modulus Prescaler for Lower Divides - RF PLL: 8/9/12/13 or 16/17/20/21 - IF PLL: 8/9 or 16/17
- Advanced Delta-Sigma Fractional Compensation - 12-Bit or 22-Bit Selectable Fractional Modulus - Up to 4th Order Programmable Delta-Sigma Modulator
- Features for Improved Lock Time - Fastlock / Cycle Slip Reduction With Integrated Time-Out Counter Which Requires Only a Single-Word Write
- Wide Operating Range - LMX2485 RF PLL: 500 MHz to 3.0 GHz - LMX2485E RF PLL: 50 MHz to 3.0 GHz
- Useful Features - Digital Lock Detect Output - Hardware and Software Power-Down Control - On-Chip Input Frequency Doubler. - RF Phase Detector Frequency up to 50 MHz - 2.5 to 3.6 V Operation With ICC = 5.0 mA
