Analog Devices / Maxim Integrated MAX44267 单电源双运算放大器
美信 MAX44267 单电源双通道运算放大器是一款精密的低噪音、低漂移双通道运算放大器，具有真正的零输出。这实现了输出过零，令模数转换器的动态范围最大化，并提高了分辨率。此外，输入共模范围更大，从 +13.5V 至 -12V。MAX44267 集成电荷泵电路，与外部电容配合产生负电压轨。这使得该放大器可采用 +4.5V 至 +15V 的单电源供电，但与通常的双轨±4.5V 至 ±15V 放大器同样有效。该器件具有的架构使其无需使用负电源供电轨，从而降低了系统成本和尺寸。
特性
- True bipolar output greater than ±10V from a single +15V supply eliminates space and cost of negative power supply
- True zero output from a single supply
- High-accuracy sensing over temperature
- Low input VOS (50µV (max.))
- Low 0.4µV/°C (max.) of offset drift
- 9nV/√Hz low input noise at 1kHz provides wide ADC dynamic range
- 5MHz gain-bandwidth product provides wide frequency input range
- Low 2.4mA (max.) quiescent current enables lower power dissipation and cooler operation
- Integrated EMI filter reduces sensitivity to motors and other high-frequency noise generators
- 14-pin TSSOP package with external charge-pump capacitors enables noise optimization
应用
- Analog level shifting/conditioning
- Bridge sensors
- PLC analog I/O modules
- Pressure sensors
- Sensor interfaces
Block Diagram
发布日期: 2015-04-02
| 更新日期: 2023-04-18