LMX2531数据手册开发板套件编程器的评估演示板及套件规格书PDF

描述 Description

The LMX2531 is a low-power, high-performance frequency synthesizer system which includes a fully integrated delta-sigma PLL and VCO with fully integrated tank circuit. The third and fourth poles are also integrated and adjustable. Ultra-low noise and high-precision LDOs are integrated for the PLL and VCO, which yield higher supply-noise immunity and more consistent performance. When combined with a high-quality reference oscillator, the LMX2531 device generates very stable, low-noise local-oscillator signals for up and down conversion in wireless communication devices. The LMX2531 device is a monolithic integrated circuit, fabricated in an advanced BiCMOS process. Several different versions of this product accommodate different frequency bands.

特性 Features

• Multiple Frequency Options Available
- See Device Information Table
• Frequencies From: 553 MHz to 3132 MHz
• PLL Features
- Fractional-N Delta-Sigma Modulator Order Programmable up to Fourth Order
• FastLock/Cycle Slip Reduction with Timeout Counter
• Partially Integrated, Adjustable Loop Filter
• Very Low Phase Noise and Spurs
• VCO Features
- Integrated Tank Inductor
• Low Phase Noise
• Other Features
- 2.8-V to 3.2-V Operation
• Low Operating Current
• Low Power-Down Current
• 1.8-V MICROWIRE Support
• 36-Pin 6-mm × 6-mm × 0.8-mm WQFN Package