Analog Devices / Maxim Integrated MAX44267 Single-Supply Dual Operational Amplifiers
Analog Devices Inc. MAX44267 Single-Supply Dual Operational Amplifiers are a precision, low-noise, low-drift dual operational amplifier that offers true-zero output. These capabilities allow the output to cross zero, maximizing the dynamic range of an ADC and increasing resolution. In addition, the input common-mode range extends from +13.5V down to -12V. The ADI MAX44267 integrates charge-pump circuitry that generates the negative voltage rail in conjunction with external capacitors. This feature allows the amplifier to operate from a single +4.5V to +15V power supply, but it is still as effective as a normal dual-rail ±4.5V to ±15V amplifier. The architecture of this device eliminates the need for a negative power-supply rail, saving system cost and size.
Features
- 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
Applications
- Analog level shifting/conditioning
- Bridge sensors
- PLC analog I/O modules
- Pressure sensors
- Sensor interfaces
Block Diagram
Associated Tool
Analog Devices / Maxim Integrated Kit de evaluación MAX44267EVKIT
Diseño comprobado para evaluar el MAX44267, un amplificador operativo dual de precisión, bajo nivel de ruido y escasos cambios.
Publicado: 2015-04-02
| Actualizado: 2023-04-18