MAX951

    The MAX951MAX954 feature combinations of a micropower operational amplifier, comparator, and reference in an 8-pin package. In the MAX951 and MAX952, the comparator's inverting input is connected to an internal 1.2V ±2% bandgap reference. The MAX953 and MAX954 are offered without an internal reference. The MAX951/MAX952 operate from a single +2.7V to +7V supply with a typical supply current of 7µA, while the MAX953/MAX954 operate from +2.4V to +7V with a 5µA typical supply current. Both the op amp and comparator feature a common-mode input voltage range that extends from the negative supply rail to with in 1.6V of the positive rail, as well as output stages that swing rail to rail. 

    The op amps in the MAX951/MAX953 are internally compensated to be unity-gain stable, while the opamps in the MAX952/MAX954 feature 125kHz typical bandwidth, 66V/ms slew rate, and stability for gains of 10V/V or greater. These op amps MAX951 have a unique output stage that enables them to operate with an ultra-low supply current while maintaining linearity under loaded conditions. In addition, they have been designed to exhibit good DC characteristics over their entire operating temperature range, minimizing input referred errors.

    The comparator output stage of these MAX951 continuously sources as much as 40mA. The comparators eliminate power-supply glitches that commonly occur when changing logic states, minimizing parasitic feedback and making the MAX951 easier to use. In addition,they contain ±3mV internal hysteresis to ensure cleanoutput switching, even with slow-moving input signals.