AD9956 基于400 MSPS、14位DAC、48位FTW、1.8 V CMOS DDS的AgileRF™频率合成器

AD9956: 基于400 MSPS、14位DAC、48位FTW、1.8 V CMOS DDS的AgileRF™频率合成器

AD9956 功能框图 AD9956是ADI公司的首款AgileRF频率合成器，由一个DDS和PLL电路组成。DDS具有一个工作速度最高达400 MSPS的14位DAC和一个48位频率调谐字。PLL电路含有一个相位检波器，该检波器具有可调整的200 MHz输入（预标定器输入的工作频率最高达650 MHz），并且可以对电荷泵电流进行数字控制。该器件还内置一个具有可编程压摆率的650 MHz PECL驱动器。AD9956采用先进的DDS技术，内置高速、高性能数模转换器和先进的相位检波器/电荷泵组合，可以合成最高达2.7 GHz的数字可编程、频率捷变模拟输出正弦波。该器件专为提供快速跳频和精密调谐分辨率（48位频率调谐字）而设计。信息通过一个串行I/O端口载入AD9956，器件写入速度为25 Mb/秒。AD9956 DDS模块还支持用户定义的线性扫描工作模式。AD9956的额定工作温度范围为−40°C至+125°C扩展汽车应用温度范围。

The AD9956 is Analog Devices’s first AgileRF synthesizer. The device is comprised of a DDS and PLL circuitry. The DDS features a 14-bit DAC operating up to 400 MSPS and a 48-bit frequency tuning word. The PLL Circuitry includes a phase detector with scaleable 200 MHz inputs (pre-scalar inputs operate up to 650 MHz) and digital control over the charge pump current. The device also includes a 650 MHz PECL driver with programmable slew rates.The AD9956 uses advanced DDS technology, an internal high-speed, high performance D/A converter and an advance phase-detector/charge pump combination to enable the synthesis of digitally-programmable, frequency-agile analog output sinusoidal waveforms up to 2.7 GHz. The AD9956 is designed to provide fast frequency hopping and fine tuning resolution (48-bit frequency tuning word). Information is loaded into the AD9956 via a serial I/O port which has a device write speed of 25 MBit/sec. The AD9956 DDS block also supports a user defined linear sweep mode of operation.The AD9956 is specified to operate over the extended automotive range of −40°C to +125°C.

特点

400 MSPS内部DDS时钟速度
48位调谐字
14位可编程相位偏移
集成14位DAC
出色的动态性能
SFDR：- 80 dB（160 MHz ± 100 kHz，失调IOUT）
串行I/O控制写入速度：25 Mb/秒
200 MHz相位检波器输入
可编程(1-16)相位检波器650 MHz预标定器(÷M、÷N)
可编程RF预标定器(÷R) {R = 2, 4, 8}
8种相位/频率方案
采用1.8 V电源供电
I/O和电荷泵输出采用3.3 V电源供电
软件控制省电模式
48引脚LFCSP封装
400 MSPS Internal DDS Clock Speed
48-bit tuning word
14-bit Programmable Phase Offset
Integrated 14-bit DAC Excellent Dynamic Performance - 80 dB SFDR @ 160 MHz (±100 kHz Offset IOUT) 25 MBit/sec-write Speed Serial I/O Control
200 MHz Phase Detector Inputs
Programmable (1-16) phase detector 650 MHz pre-scalars (÷M, ÷N)
Programmable RF Prescaler (÷R) {R = 2, 4, 8}
8 Phase/frequency Profiles
1.8 V Supply for Device Operation
3.3 V Supply for I/O and Charge Pump Output
Software Controlled Power-down
48-lead LFCSP

应用领域

LO捷变频合成
雷达和扫描系统的FM线性调频源
汽车雷达
测试与测量设备
声光器件驱动器
Agile L.O. frequency synthesis
FM chirp source for radar and scanning systems
Automotive radars
Test and measurement equipment
Acousto-optic device drivers

技术指标

Master fclk : 400MHz
Resolution (Bits): 14bit
Tuning Word Width (bits): 48bit
I/O Interface: Serial
REFCLK Multiplier: No
Compliance Range (V): 2.3V
FS Iout (mA nom): 10mA

订购指南

产品型号	封装	引脚	温度范围	包装和数量	报价*(100-499)	报价*1000 pcs	RoHS
AD9956YCPZ 产品状态: 量产	48 ld LFCSP 7x7mm (5.25EP)	48	工业	Tray, 260	$ 20.53	$ 17.45	Y 材料信息

开发工具

产品型号	描述	报价	RoHS
AD9956/PCB 产品状态: 停产	Evaluation Board	$ 0.00	否
AD9956-VCO/PCBZ 产品状态: 量产	Evaluation Board	$ 400.00	是