LMC6772BIM Datasheet/PDFLMC6772BIM application field and working principle
Linear - Comparators
The LMC6772BIM, or Low-Voltage, Low-Power, Rail-to-Rail CMOS Operational Amplifier, is an integrated circuit manufactured by National Semiconductor. It is a high-performance, low-power op-amp intended for use in several linear comparator applications. The op-amp is characterized by its low voltage and power requirements, its rail-to-rail output capability and its low-distortion performance.
The LMC6772BIM is a dual-rail input, single-rail output CMOS op-amp suitable for use as a comparator, an electronic switch or amplifier. The op-amp supports rail-to-rail output swings, with an input offset voltage of less than 10mV. The device is designed with a nominal supply voltage of 5V, with a quiescent current of 9µA and can operate with supply voltages down to 2.8V.
The LMC6772BIM is a cost-efficient, low-noise circuit intended for use in a wide range of linear comparator applications. It is suitable for input stages of single and dual supply instrumentation amplifiers, bridge circuits, RTDs, high-speed comparators, voltage-to-frequency converters, peak detectors and precision rectifiers.
The LMC6772BIM works by using two differential amplifiers, each described by a gain of gm. The amplifier takes a positive or negative-going input signal on its non-inverting or inverting input respectively, and its output will be proportional to the difference between the two input voltages. This output is then further amplified by an external voltage gain stage.
The op-amp takes a positive or negative-going input signal on its non-inverting or inverting input respectively, and its differential output will be proportional to the difference between the two input voltages. The output of each amplifier is then further amplified by an external voltage gain stage. The amplifiers also have a low-pass filter that prevents high-frequency noise from affecting the input signal.
The LMC6772BIM is highly suitable for use in a variety of linear comparator applications, thanks to its low voltage and power requirements, rail-to-rail output capability and low-distortion performance. This makes it an ideal choice for input stages of single and dual supply instrumentation amplifiers, bridge circuits, RTDs, high-speed comparators, voltage-to-frequency converters, peak detectors and precision rectifiers.