LMC6484IM

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The LMC6484IM is a low-power, dual-channel rail-to-rail input/output CMOS operational amplifier. It is designed to operate with a single power supply with a power range of 3.0V to 12.5V. This amplifier is designed for ADC and DAC analog-to-digital and digital-to-analog applications. This device is ideal for high-accuracy instrumentation amplifiers, active filters and active switching circuits.

The operational amplifier consists of two independent, high-gain, and low-distortion operational amplifiers with a common power supply. They provide rail-to-rail input and output over the 3V to 12.5V supply range. The open-loop gain can be greater than 1 million and the output offset voltage is typically less than 1mV. The device is slew-rate limited and can operate up to relatively high frequencies.

The LMC6484IM is designed to operate with negative feedback, resulting in a high common-mode rejection ratio, excellent temperature characteristics, low input bias currents, and low noise. It can easily interface with analog or digital circuits with a single supply. The operating temperature range is -40ºC to +125ºC.

The LMC6484IM is suitable for a variety of applications, including high-accuracy instrumentation amplifier, active filters, and active switching circuits. For instrumentation amplifiers, the device provides a low noise-gain bandwidth product and low dc offset voltage, allowing the use of low-cost passive components in the feedback loop. It can also be used in active filter circuits to provide high accuracy and low distortion of the signal. The device can be used as a switch in analog voltage control circuits and can deliver high performance for audio applications.

The LMC6484IM utilizes internal cross-coupled transistors to achieve rail-to-rail operation. It consists of two transconductance amplifiers that are directly coupled to each other. The dual transconductance amplifiers drive a single transimpedance amplifier that drives the output. This device has a high-speed output that can drive up to 50pf capacitive loads, allowing the device to be used in high-speed, pulsed applications.

The LMC6484IM offers several features that make it well suited to many types of applications. It has a low voltage noise level and provides low power consumption. Additionally, the device offers high frequency operation and excellent ac parameters, such as an open-loop gain flatness of 0.1dB. The device also has an internal power-on reset circuit that resets the output amplifiers under abnormal supply conditions, ensuring reliable operation.

In summary, the LMC6484IM is a low-power, dual-channel rail-to-rail input/output CMOS operational amplifier. It is designed for high-accuracy instrumentation amplifiers, active filters, and active switching circuits. The device has a low noise-gain bandwidth product and low dc offset voltage, which allows for the use of low-cost passive components in the feedback loop. It also offers high frequency operation, low voltage noise, and low power consumption.

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