AD8642ARMZ:  低功耗、轨到轨输出、精密JFET双路放大器

The AD8641/AD8642/AD8643 are low power, precision JFET input amplifiers featuring extremely low input bias current and rail-to-rail output. The ability to swing nearly rail-to-rail at the input and rail-to-rail at the output enables designers to buffer CMOS DACs, ASICs, and other wide output swing devices in single-supply systems. The outputs remain stable with capacitive loads of more than 500 pF.

The AD8641/AD8642/AD8643 are suitable for applications utilizing multichannel boards that require low power to manage heat. Other applications include photodiodes, ATE reference level drivers, battery management, and industrial controls.

The AD8641/AD8642/AD8643 are fully specified over the extended industrial temperature range of –40°C to +125°C. The AD8641 is available in 5-lead SC70 and 8-lead SOIC lead-free packages. The AD8642 is available in 8-lead MSOP and 8-lead SOIC lead-free packages. The AD8643 is available in 14-lead SOIC and 16-lead, 3 mm × 3 mm, LFCSP lead-free packages.

AD8641/AD8642/AD8643均为低功耗、精密JFET输入放大器,具有极低的输入偏置电流和轨到轨输出特性。此外还具有近似轨到轨输入与轨到轨输出摆幅能力,因而设计人员可以在单电源系统中缓冲CMOS DAC、ASIC及其它宽输出摆幅器件。当容性负载大于500 pF时,输出仍能保持稳定。

AD8641/AD8642/AD8643适合采用多通道电路板、要求低功耗、便于散热管理的应用。其它应用包括光电二极管、ATE基准电平驱动器、电池管理和工业控制。

AD8641/AD8642/AD8643的额定温度范围为-40°C至+125°C扩展工业温度范围。AD8641提供5引脚SC70和8引脚SOIC无铅封装。AD8642提供8引脚MSOP和8引脚SOIC无铅封装。AD8643提供14引脚SOIC和3 mm × 3 mm、16引脚LFCSP无铅封装。

产品应用领域 Applications
AD8642ARMZ 特点
AD8642ARMZ 功能框图

AD8642ARMZ 技术指标
-3dB Bandwidth 3.5MHz Vcc-Vee Supply (V) 5 to 26
Slew Rate 3V/µs Iq per Amplifier 290µA
Vos 50µV # OpAmps per Pkg 2
Ib 0.25pA Operating Temp Range -40 to +125
Input Noise (nV/rtHz) 27.5nV/rtHz Packages SOIC,SOP
AD8642 订购指南
产品型号 产品状态 封装 引脚 温度范围
AD8642ARMZ 量产   8 工业
AD8642ARMZ-REEL 量产 8 ld MSOP 8 工业
AD8642ARZ 量产 8 ld SOIC 8 工业
AD8642ARZ-REEL 量产 8 ld SOIC 8 工业
AD8642ARZ-REEL7 量产 8 ld SOIC 8 工业
AD8642ARMZ 应用技术支持与电子电路设计开发资源下载
  1. 运算放大器系列AD8642 数据手册DataSheet 下载 . pdf
  2. ADI 模拟器件公司比较器产品选型指南 . pdf
  3. Analog Devices, Inc. 美国模拟器件公司产品订购手册 .pdf