- 制造厂商：TI
- 产品类别：射频与微波
- 技术类目：射频 PLL 与合成器
- 功能描述：具有 800MHz 整数 N PLL 的 2.6GHz Δ-Σ 分数 N PLL
- 点击这里打开及下载LMX2470的技术文档资料
- TI代理渠道，提供当日发货、严格的质量标准，满足您的目标价格
The LMX2470 is a low power, high performance delta-sigma fractional-N PLL with an auxiliary integer-N PLL. The device is fabricated using TI’s advanced BiCMOS process.
With delta-sigma architecture, fractional spur compensation is achieved with noise shaping capability of the delta-sigma modulator and the inherent low pass filtering of the PLL loop filter. Fractional spurs at lower frequencies are pushed to higher frequencies outside the loop bandwidth. Unlike analog compensation, the digital feedback techniques used in the LMX2470 are highly resistant to changes in temperature and variations in wafer processing. With delta-sigma architecture, the ability to push close in spur and phase noise energy to higher frequencies is a direct function of the modulator order. The higher the order, the more this energy can be spread to higher frequencies. The LMX2470 has a programmable modulator up to order four, which allows the designer to select the optimum modulator order to fit the phase noise, spur, and lock time requirements of the system.
Programming is fast and simple. Serial data is transferred into the LMX2470 via a three line MICROWIRE interface (Data, Clock, Load Enable). Nominal supply voltage is 2.5 V. The LMX2470 features a typical current consumption of 4.1 mA at 2.5 V. The LMX2470 is available in a 24 lead 3.5 X 4.5 X 0.6 mm package.
- Low In-Band Phase Noise and Low Fractional Spurs
- 12 Bit or 22 Bit Selectable Fractional Modulus
- Up to 4th Order Programmable Delta-Sigma Modulator
- Enhanced Anti-Cycle Slip Fastlock Circuitry
- Fastlock
- Cycle Slip Reduction
- Integrated Timeout Counters
- Digital Lock Detect Output
- Prescalers Allow Wide Range of N Values
- RF PLL: 16/17/20/21
- IF PLL: 8/9 or 16/17
- Crystal Reference Frequency up to 110 MHz
- On-chip Crystal Reference Frequency Doubler.
- Phase Comparison Frequency up to 30 MHz
- Hardware and Software Power-down Control
- Ultra Low Consumption: ICC = 4.1 mA (Typical)
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- Integrated VCO
- No
- Output frequency (Min) (MHz)
- 500
- Output frequency (Max) (MHz)
- 2600
- Normalized PLL phase noise (dBc/Hz)
- -210
- Current consumption (mA)
- 3.9
- 1/f noise (10-kHz offset at 1-GHz carrier) (dBc/Hz)
- -104
LMX2470的完整型号有：LMX2470SLEX、LMX2470SLEX/NOPB，以下是这些产品的关键参数及官网采购报价：
LMX2470SLEX，工作温度：-40 to 85，封装：ULGA (NPF)-24，包装数量MPQ：2500个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIAU，TI官网LMX2470SLEX的批量USD价格：1.76（1000+）
LMX2470SLEX/NOPB，工作温度：-40 to 85，封装：ULGA (NPF)-24，包装数量MPQ：2500个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIAU，TI官网LMX2470SLEX/NOPB的批量USD价格：1.76（1000+）
PLLATINUMSIM-SW — PLLatinum 仿真工具
PLLATINUMSIM-SW 是一款仿真工具，允许用户创建我们 PLLatinum 集成电路的详细设计和仿真，其中包括 LMX 系列锁相环 (PLL) 和合成器。CODELOADER — CodeLoader 器件寄存器编程
The CodeLoader 4 software is used to program the LMX PLLs and LMK timing devices through either the USB or line print terminal (LPT) port of a computer. This software also provides information on how to program the device by showing the bits that are actually sent.Which software do I use?
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