LTC6102HVIMS8#PBF

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The LTC6102HVIMS8#PBF is a low-noise, low-power, single-ended-input, fully differential high-voltage amplifier used in applications where a low-power, high-precision, low-distortion signal amplification is required. It operates over an extended range of -5uV to 40V and can provide gains ranging from 1 to 500 V/V (/Vµ).

Applications

The LTC6102HVIMS8#PBF is an ideal choice for use in instrumentation, control, and signal conditioning applications. It is ideally suited for use in low-level signal conditioning, as the amplifier has a very low noise floor when compared to other high-voltage amplifiers. It can be used to amplify signals in the range of 0 to 5V or -5V to 40V, and has the ability to provide gains up to 500V/V. It can be used in applications such as:

• Piezo transducer conditioning
• Weigh-scale force balance systems
• Process control systems
• Strain gage signal conditioning
• Voltmeter and multimeters
• Potentiometer signal conditioning
• Temperature sensor signal conditioning
• Voltage-to-current converters
• Motion detectors
• Position and vibration transducers

Working Principle

The LTC6102HVIMS8#PBF is a high-input/low-output differential amplifier with a low noise floor. It is a three terminal, high-voltage amplifier that is designed to operate with a gain set by an external resistor. This amplifier is hysteresis-free and has an output buffer which provides the capability to interface to a low-impedance load.

The amplifier consists of four main parts: input stage, first output stage, second output stage and control stage. The input stage converts the differential input voltage into a low-impedance current signal. The first and second output stages together form a differential voltage amplifier with a gain set by an external resistor. The control stage adjusts the bias current in the output stages, which determines the gain. The output buffer isolates the input from the output to ensure a clean signal.

The LTC6102HVIMS8#PBF operates from 4.5V to 16V, and can deliver gains from 1 to 500V/V in 1V/V steps. It has a very low supply current, typically 0.5mA, making it an ideal choice for battery-powered operations. It is unity-gain stable and has a wide common-mode input voltage range of 0 to 200V.

The amplifier provides excellent signal-to-noise performance and is designed to minimize output signal distortion. The amplifier’s wide bandwidth of up to 1.8MHz ensures excellent signal fidelity and fast settling times, while its low harmonic distortion of less than 0.2% ensures excellent performance in a wide variety of applications.

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