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LT6235CGN#TRPBF Application Field and Working Principle

Linear Amplifiers - Instrumentation, OP Amps, Buffer Amps

The LT6235CGN#TRPBF is a general-purpose wide-band amplifier specifically designed for transimpedance and transresistance applications from DC to 2MHz. It features a low VOS output shift and low noise with excellent compression characteristics thanks to its precision CMRR beyond 90dB. With its very wide bandwidth, it is an ideal amplifier for a range of applications in the general-purpose category, most notably in instrumentation, op amps, and buffer amps.

Applications

The LT6235CGN#TRPBF is ideal for applications such as transimpedance and transresistance signal conversion, high voltage amplification, current mode driver, and wide band gain blocks. It is ideal for applications where wide bandwidth, low noise, and low VOS output shift. It is also a great option for RC filters, signal conditioning, and signal buffering.

Features

• Wide bandwidth: DC to 2MHz
• Low VOS output shift
• Low noise
• Excellent compression characteristics
• High precision CMRR beyond 90dB
• Ideal for transimpedance and transresistance signal conversion, current mode driver, wideband gain block
• Ideal for RC filters, signal conditioning, and signal buffering

Working Principle

The LT6235CGN#TRPBF has a wide bandwidth from DC to 2MHz and is able to handle high currents without compromising on power and noise. The amplifier is designed to work with signals with both low and high input voltages, as well as various load and source impedances. This is achieved by having an open loop gain of up to 300dB, a phase margin of 45°, and a wide common mode input voltage range. The device also features a wide common mode rejection ratio of over 90dB and low bias current. The device is also able to handle wide common mode input voltages while still providing good dc accuracy and precision.

The working of the amplifier is done through the output buffer stage. This stage consists of a differential pair of transistors whose collectors are connected to the output voltage. The accurate output voltage is generated when the common mode feedback system is enabled. The amplifier also uses drain negative feedback to improve the differential and common mode gain accuracy. This feedback also minimizes the input referred noise and distortion, resulting in a clean output.

Conclusion

The LT6235CGN#TRPBF is a general-purpose wide-band amplifier specifically designed for transimpedance and transresistance applications from DC to 2MHz. It is ideal for a range of applications in the general-purpose category, most notably in instrumentation, op amps, and buffer amps. It features a low VOS output shift and low noise with excellent compression characteristics thanks to its precision CMRR beyond 90dB.

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