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LTC6946

具集成型 VCO 的超低噪声及杂散 0.37GHz 至 6.39GHz 整数 N 合成器

英文数据手册

推荐新设计使用

顶部

替代器件

LTC5585

具 IIP2 和 DC 偏移控制功能的宽带 IQ 解调器

概览

优势和特点
产品详情

优势和特点

具集成型 VCO 的低噪声整数 N PLL
–226dBc/Hz 归一化带内相位噪声层
–274dBc/Hz 归一化带内 1/f 噪声
–157dBc/Hz 宽带输出相位噪声层
超卓的杂散性能
输出分频器 (1 至 6，50% 占空比)
输出缓冲静噪
低噪声基准缓冲器
充电泵电流可调范围：250μA 至 11.2mA
可配置状态输出
SPI 兼容型串行端口控制
PLLWizard^™ 软件设计支持工具

产品详情

LTC^®6946 是具全集成型 VCO 的高性能、低噪声、6.39GHz 锁相环 (PLL)，包括一个基准分频器、具锁相指示器的相位-频率检测器 (PFD)、超低噪声充电泵、整数反馈分频器和 VCO 输出分频器。充电泵包含可选的高电压及低电压箝位，可用于 VCO 监视。

集成型低噪声 VCO 未采用任何外部组件。它在内部进行校准以校正输出频率，而无需外部系统支持。

该器件具有一个缓冲的可编程 VCO 输出分频器 (分 1 ~ 6 级)，从而可提供一个很宽的频率范围。

应用

无线基站 (LTE、WiMAX、W-CDMA、PCS)
宽带无线接入
军用及安全无线电
测试和测量

产品分类

时钟与定时
- 整数 N PLL
- 具集成化 VCO 的 PLL

射频和微波
- 集成压控振荡器(VCO)的PLL
- 整数N分频PLL

产品生命周期推荐新设计使用

本产品已上市。数据手册包含所有最终性能规格和工作条件。ADI公司推荐新设计使用这些产品。

评估套件 (5)

DC1705C-C

LTC6946-3 Demo Board | Ultralow Noise and Spurious 640MHz to 5.79GHz Integer-N Synthesizer with Integrated VCO (Requires DC590 or DC2026)
DC1705C-D

LTC6946-4 Demo Board | Ultralow Noise and Spurious 700MHz to 6.39GHz Integer-N Synthesizer with Integrated VCO (Requires DC590 or DC2026)
DC1705C-B

LTC6946-2 Demo Board | Ultralow Noise and Spurious 513MHz to 4.91GHz Integer-N Synthesizer with Integrated VCO (Requires DC590 or DC2026)
DC1705C-A

LTC6946-1 Demo Board | Ultralow Noise and Spurious 373MHz to 3.74GHz Integer-N Synthesizer with Integrated VCO (Requires DC590 or DC2026)
DC2429A

LT3042 Low Noise PLL/VCO Power Supply Board with Onboard 100MHz Reference Frequency

DC1705C-B

查看此评估套件详细信息

DC1705C features the LTC6946, an ultralow noise and spurious integer-N frequency synthesizer with integrated VCO. The VCO uses no external components and is internally calibrated without external system support. There are three versions of the DC1705C, one for each version of the LTC6946. The DC1705C-A contains the LTC6946-1, the DC1705C-B incorporates the LTC6946-2 and DC1705C-C uses the LTC6946-3.

软件

QuikEval

DC1705C-A

查看此评估套件详细信息

软件

QuikEval

DC2429A

查看此评估套件详细信息

Demonstration Circuit 2429A is a PLL/VCO Supply and Reference Frequency Board that features the LT3042, an ultralow noise and ultrahigh PSRR RF linear regulator. When powered from a 6V to 20V lab or wall wart supply, the DC2429A produces four ultralow noise supplies using seven LT3042s. These supplies include a fixed 3.3V/800mA supply (four LT3042's in parallel), a fixed 5V/200mA supply, a fixed 3.3V/200mA supply that powers an onboard 100MHz ultralow jitter crystal oscillator, and an adjustable voltage (2.5V to 15V), 200mA supply ideal for powering external VCOs. The DC2429 ensures PLL/VCO evaluation meets data sheet performance.

文档

数据手册 (1)

PDF

570.00K

LTC6946: Ultralow Noise and Spurious 0.37GHz to 6.39GHz Integer-N Synthesizer with Integrated VCO Data Sheet

Reliability Data (1)

PDF

53.84 K

R565 Reliability Data

应用笔记 (1)

PDF

250.00K

AN143 - A Simple Method to Accurately Predict PLL Reference Spur Levels Due to Leakage Current

解决方案通报和手册 (1)

PDF

439.00K

LTC6946 - The New Low in Frequency Synthesis

评估板套件使用手册 (1)

PDF

677.00K

DC1705C - Demo Manual

设计笔记 (2)

PDF

280.00K

DN555 - 用于 16 位 2.5Gsps 高性能 DAC 的卓越时钟解决方案

PDF

219.00K

DN555 - Uncompromised Clocking Solution for 16-Bit 2.5Gsps High Performance DAC

软件代码及系统需求

评估软件

PLLWizard

PLLWizard is used to communicate with the LTC6945 and LTC6946 synthesizers. It uses the DC590 controller to translate between USB and SPI-compatible serial communications formats. It also includes advanced PLL design and simulation capabilities which aid in loop filter design and selecting the correct SPI map register values.