双Picoampere输入电流双极运算放大器 Dual Picoampere Input Current Bipolar Op Amp
Product Details
The AD706 is a dual, low power, bipolar op amp that has the low input bias current of a JFET amplifier, but which offers a significantly lower IB drift over temperature. It utilizes superbeta bipolar input transistors to achieve picoampere input bias current levels similar to FET input amplifiers at room temperature, while its IB typically only increases by 5× at 125°C unlike a JFET amp, for which IB doubles every 10°C for a 1000× increase at 125°C. The AD706 also achieves the microvolt offset voltage and low noise characteristics of a precision bipolar input amplifier.
Since it has < 200 pA of bias current, the AD706 does not require the commonly used “balancing” resistor. Furthermore, the current noise is only 50 fA/√Hz, which makes this amplifier usable with very high source impedances. At 600 µA max supply current per amplifier, the AD706 is well suited for today’s high density boards.
The AD706 is an excellent choice for use in low frequency active filters in 12-bit and 14-bit data acquisition systems, in precision instrumentation, and as a high quality integrator. The AD706 is internally compensated for unity gain and is available in five performance grades. The AD706J is rated over the commercial temperature range of 0°C to +70°C. The AD706A is rated for the extended industrial temperature range of –40°C to +85°C.
The AD706 is offered in two varieties of an 8-lead package: plastic mini-DIP and surface-mount SOIC.
**Product Highlights**
1. The AD706 is a dual low drift op amp that offers JFET
level input bias currents, yet has the low IB drift of a bipolar
amplifier. It may be used in circuits using dual op amps
such as the LT1024.
2. The AD706 provides both low drift and high dc precision.
3. The AD706 can be used in applications where a chopper
amplifier would normally be required but without the
chopper’s inherent noise.
**Applications**
### Features and Benefits
供电电流 750 µA
电路数 2
通道数 2
耗散功率 0.65 W
共模抑制比 110 dB
输入电容 2.00 pF
转换速率 150 mV/μs
增益频宽积 0.8 MHz
输入阻抗 300 GΩ
输入补偿电压 30 µV
输入偏置电流 50 pA
工作温度Max 85 ℃
工作温度Min -40 ℃
3dB带宽 800 kHz
增益带宽 110 dB
耗散功率Max 650 mW
共模抑制比Min 110 dB
安装方式 Surface Mount
引脚数 8
封装 SOIC-8
长度 5 mm
宽度 4 mm
高度 1.5 mm
封装 SOIC-8
工作温度 -40℃ ~ 85℃
产品生命周期 Active
包装方式 Tape & Reel TR
RoHS标准 RoHS Compliant
含铅标准 Lead Free
军工级 No
ECCN代码 EAR99
型号/品牌 | 代替类型 | 替代型号对比 |
---|---|---|
AD706ARZ-REEL ADI 亚德诺 | 当前型号 | 当前型号 |
AD706AR-REEL7 亚德诺 | 完全替代 | AD706ARZ-REEL和AD706AR-REEL7的区别 |
AD706ARZ 亚德诺 | 类似代替 | AD706ARZ-REEL和AD706ARZ的区别 |
AD706AR 亚德诺 | 类似代替 | AD706ARZ-REEL和AD706AR的区别 |