LT6235IGN#PBF

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LT6235IGN#PBF Application Field and Working Principle

The LT6235IGN#PBF is a high-performance monolithic amplifier with a wide range of linear applications. It belongs to the Instrumentation, OP Amps, Buffer Amplifiers category, and is a product of Linear Technology. With its wide input common-mode range and high differential gain accuracy, the amplifier is suitable for transimpedance, voltage and current sensing applications.

Physically, the LT6235IGN#PBF is in a 6-pin narrow SOIC surface-mount package and is rated for a supply voltage range from 3.0 V to 36 V. Other features of the amplifier include a minimum specified gain of 10 dB to 1000 MHz with an input-referred offset voltage of 3 mV and a power-supply rejection phase (PSRR) of 120 dB. Additionally, the amplifier has a bandwidth of 1.0 GHz and a current consumption of 10 mA.

LT6235IGN#PBF Operating Principle

The LT6235IGN#PBF operates on the principle of differential input, single-ended output, low-power consumption along with high gain, large common-mode rejection ratio (CMRR), and fast small-signal transient response. In addition, the device has a wide input common-mode range and low-input bias current, an extremely low differential input voltage noise of 1 nV/√Hz, and a settling time of 0.2 µs to 0.01%.

The LT6235IGN#PBF is comprised of a single monolithic amplifier, dual gain stage and step recovery diode circuits. The amplifier has high linearity at large signal excursions, providing the preamplifier with excellent gain accuracy, low noise and wide dynamic range. The dual gain stage and step recovery circuits are responsible for the fast transient response and wideband gain characteristic.

The wide common-mode input range of the LT6235IGN#PBF allows for fast and accurate wideband gain measurement. The amplifier is driven from a fast thermocouple-drive pulse source and differential transimpedance transducers, which enables the device to achieve a wide gain accuracy and fast transient response. Additionally, the high output voltage swing and wide bandwidth of the LT6235IGN#PBF facilitate higher frequency AC measurements.

LT6235IGN#PBF Applications

The LT6235IGN#PBF is suitable for transimpedance, voltage and current sensing applications. It can be used in applications such as transducer acquisition, biomedical transducer amplifiers, cable-transmission systems and time-domain reflectometers. For example, it can be used as in a wideband AC transimpedance amplifier where it will provide transmission of high-frequency signals with an AC voltage response that remains linear over the entire frequency range.

The LT6235IGN#PBF is also suitable for automotive-Ethernet systems, smart-load sensing networks and multimedia displays. Additionally, the amplifier is suitable for high-frequency measurements, such as audio and RF transmission, where accuracy and dynamic range is essential.

Conclusion

The LT6235IGN#PBF is a high-performance monolithic amplifier designed for high-bandwidth applications such as transimpedance and current sensing. With its wide input common-mode range, high differential gain accuracy, wide gain range and low-input bias current, the device is well suited for many applications such as transducer acquisition, biomedical transducer amplifiers, cable-transmission systems, time-domain reflectometers, automotive-Ethernet systems, smart-load sensing networks and multimedia displays.

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