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.