AD9858 1 GSPS直接数字频率合成器

AD9858: 1 GSPS直接数字频率合成器

AD9858 功能框图 AD9858是一款直接数字频率合成器(DDS)，内置一个10位DAC，工作速度最高达1 GSPS。该器件采用先进的DDS技术，内置一个高速、高性能数模转换器，构成数字可编程的完整高频合成器，能够产生最高400+ MHz的频率捷变模拟输出正弦波。AD9858专为提供快速跳频和精密调谐分辨率（32位频率调谐字）而设计。频率调谐和控制字以并行（8位）或串行加载格式载入AD9858。该器件内置一个集成式电荷泵(CP)和相位频率检波器(PFD)，适合同时要求高速DDS与锁相环功能的频率合成应用。此外还提供一个片内模拟混频器，适合同时拥有DDS、PLL和混频器的应用，如频率转换环路、调谐器等。AD9858的时钟输入上还具有二分频特性，使外部时钟速率可以高达2 GHz。AD9858的额定工作温度范围为–40°C至+85°C工业温度范围。

The AD9858 is a direct digital synthesizer (DDS) featuring a 10-bit digital-to-analog converter (DAC) operating up to 1 GSPS. The AD9858 uses advanced DDS technology coupled with an internal high speed, high performance DAC to form a digitally programmable, complete high frequency synthesizer capable of generating a frequency-agile analog output sine wave at up to 400 MHz. The AD9858 is designed to provide fast frequency hopping and fine tuning resolution (32-bit frequency tuning word). The frequency tuning and control words are loaded into the AD9858 via parallel (8-bit) or serial loading formats. The AD9858 contains an integrated charge pump (CP) and phase frequency detector (PFD) for synthesis applications requiring the combination of a high speed DDS along with phase-locked loop (PLL) functions. An analog mixer is also provided on chip for applications requiring the combination of a DDS, PLL, and mixer, such as frequency translation loops and tuners. The AD9858 also features a divide-by-2 on the clock input, allowing the external reference clock to be as high as 2 GHz.The AD9858 is specified to operate over the extended industrial temperature range of –40°C to +85°C.

特点

1 GSPS内部时钟速度
最高2 GHz输入时钟（可选二分频）
集成10位数模转换器
出色的相位噪声和SFDR
32位可编程频率寄存器
简化的8位并行和SPI®串行控制接口
自动频率扫描功能
4种频率方案
3.3 V电源
功耗：2 W（典型值）
集成可编程电荷泵和相位频率检波器，具有快速锁定电路
欲了解更多信息，请参考数据手册
1 GSPS internal clock speed
Up to 2 GHz input clock (selectable divide-by-2)
Integrated 10-bit DAC
Excellent phase noise and SFDR
32-bit programmable frequency register
Simplified 8-bit parallel and SPI serial control interface
Automatic frequency sweeping capability
4 frequency profiles
3.3 V power supply
Power dissipation: 2 W typical
Integrated programmable charge pump and phase frequency detector with fast lock circuit
See data sheet for additional features

应用领域

VHF/UHF LO频率合成
调谐器
仪器仪表
捷变时钟频率合成
蜂窝基站跳频合成器
雷达
Sonet/SDH时钟频率合成
VHF/UHF LO synthesis
Tuners
Instrumentation
Agile clock synthesis
Cellular base station hopping synthesizers
Radars
SONET/SDH clock synthesis

技术指标

Master fclk : 1000MHz
Resolution (Bits): 10bit
Tuning Word Width (bits): 32bit
I/O Interface: Parallel,Serial
REFCLK Multiplier: No
Compliance Range (V): 3.8V
FS Iout (mA nom): 40mA

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
AD9858BSV 产品状态: 停产	100 ld TQFP-ED(w/ 6.5mm exposed pad)	100	工业	Tray, 90	$ 0.00	$ 0.00	N 材料信息
AD9858BSVZ 产品状态: 量产	100 ld TQFP-ED(w/ 6.5mm exposed pad)	100	工业	Tray, 90	$ 53.73	$ 45.66	Y 材料信息

开发工具

产品型号	描述	报价	RoHS
AD9858/FDPCB 产品状态: 停产	Evaluation Board	$ 0.00	否
AD9858/PCBZ 产品状态: 量产	Evaluation Board	$ 400.00	是