AD9540: Low Jitter, DDS-based Clock Generator and Synthesizer
The AD9540 supports a variety of functions including signal synthesis and low jitter clock generation useful in a wide variety of applications. The device features high performance PLL circuitry including a flexible 200 MHz Phase Frequency Detector and a digitally controlled charge pump current. The device also provides a low jitter, 655 MHz CML mode (PECL compatible) output driver with programmable slew rates. External VCO rates up to 2.7 GHz are supported. An onboard 400 MSPS DDS provides extremely fine tuning resolution and phase programmability. Information is loaded into the AD9540 via a serial I/O port which has a device write speed of 25Mbit/sec. The AD9540 frequency divider block can also be programmed to support a spread spectrum clocking mode.
The AD9540 is specified to operate over the extended automotive range of -40°C to +85°C.
产品应用领域 Applications
- Clocking high performance data converters
- Basestation clocking applications
- Network (SONET/SDH) clocking
- Gigabit Ethernet (GbE) clocking
- Instrumentation clocking circuits
AD9540 特点
- Intrinsic Jitter performance < 500 fs
- Synthesizes signals to 2.7 GHz
- Generates clock signals to 655 MHz
- 25 Mbit/sec write speed Serial I/O Control
- 200 MHz Phase Frequency Detector Inputs
- 400 MSPS DDS onboard
Programmable edge delay w/ 93 fs resolution
Frequency resolution <2.33 uHz - 655 MHz Programmable Input Dividers for the Phase Frequency Detector (÷M,N) {M,N =1..16} (bypassable)
- 8 Programmable internal clock rates
- 1.8 V Supply for device operation
3.3 V Supply for I/O, CML Driver & Charge Pump Output - Software controlled power-down
- 48-lead LFCSP package
- Programmable charge pump current (up to 4 mA)
AD9540 功能框图
| 产品型号 | 产品状态 | 封装 | 引脚 | 温度范围 |
|---|---|---|---|---|
| AD9540-VCO/PCB | 量产 | 评估板 | 48 | 工业 |
| AD9540-VCO/PCBZ | 量产 | 评估板 | 48 | 工业 |
| AD9540/PCB | 量产 | 评估板 | 48 | 工业 |
| AD9540/PCBZ | 量产 | 评估板 | 48 | 工业 |
| AD9540BCPZ | 量产 | 48 ld LFCSP 7x7mm (5.25EP) | 48 | 工业 |
| AD9540BCPZ-REEL7 | 量产 | 48 ld LFCSP 7x7mm (5.25EP) | 48 | 工业 |
AD9540 应用技术支持与电子电路设计开发资源下载
- AD9540 数据手册DataSheet 下载 . PDF
- ADI 模拟器件公司比较器产品选型指南 . PDF
- Analog Devices, Inc. 美国模拟器件公司产品订购手册 .PDF
- 时钟和定时IC产品介绍 . PDF