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Due to their low noise, high slew rate, low input bias current, and offset voltage, JFET operational amplifiers are ideal for high impedance applications requiring precision and low noise.
When compared to comparable competitive parts, the user gets outstanding value and flexibility from the combination of precision, low noise, high speed, and a small footprint.
Photodiode amplifiers, precision power supply controls, industrial controls, and precision medical and analytical instrumentation are all examples of applications for these amplifiers.
In a low-noise circuit, amplifying sensors’ minute signals is a common but challenging challenge. Due to their broadband noise and low flicker (1/f), operational amplifiers (op amps) with bipolar inputs are frequently used by designers to achieve this amplification.
When the small signal of interest is generated by a sensor with a high source impedance that is unable to supply sufficient current to the amplifier’s input, bipolar op amps present a further obstacle.
In comparison to their CMOS- and junction field-effect transistor (JFET)-input counterparts, bipolar op amps have higher input bias currents in the nanoampere range or higher and a lower input impedance.
The Global Low Noise JFET Operational Amplifiers market accounted for $XX Billion in 2023 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2024 to 2030.
The single JFET op amps LT1792 and LT1793 have the lowest total noise across a wide range of transducer impedances thanks to their extremely low voltage noise (4nV/Hz for the LT1792 and 6nV/Hz for the LT1793) and low current noise (10fA/Hz for the LT1792 and 0.8fA/Hz for the LT1793).
Due to their lower current noise, the LT1792/LT1793 JFET op amps will prevail over the lowest voltage noise bipolar op amps for high transducer impedance.
An amplifier’s input bias current (IB) determines its current noise (2qIB).Due to their lower voltage noise for the same tail current of the differential input pair, bipolar op amps typically prevail over conventional JFET op amps when it comes to lower transducer impedance.
The voltage noise of the LT1792/LT1793 op amps is intended to be comparable to that of bipolar op amps. The LT1792/LT1793 can be used in precision applications due to their high DC gain of four million and low offset voltage of 250 V.
All of these op amps are unconditionally stable for gains of one or more. The gain-bandwidth product, voltage noise, and slew rate are all tested to the hilt. The SO-8 package is used to keep track of all of the specifications.