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The LT1793CS8 creates a new standard of excellence in noise performance for JFET op amps. The combination of low voltage noise (6nV/√Hz) and very low current noise (0.8fA/√Hz) provides the lowest total noise for high impedance transducer applications. Unlike most JFET op amps, the LT1793 maintains a very low input bias current (3pA typical) over the entire common-mode range, which results in an extremely high input resistance (1013Ω). When combined with a very low input capacitance (1.5pF), this produces an extremely high input impedance, making the LT1793 preferable for amplifying low-level signals from high-impedance transducers. In addition, the low input capacitance ensures high gain linearity when buffering AC signals from high impedance transducers.

For gain values of 1 or greater, the LT1793 is unconditionally stable, even with capacitive loads of 1000pF. Other key features of the device include a 250μV VOS and a voltage gain in excess of 4,000,000. Each individual amplifier is 100% tested for voltage noise, slew rate (3.4V/μs) and gain-bandwidth product (4.2MHz).

LT1793CS8 Features

Input bias current, warm-up: 10pA (max)

Low voltage noise 100% tested: 8nV/√Hz (max)

Class A device 100% tested over temperature

Out-of-range voltage over full temperature range: 1mV (max)

Input resistance: 1013Ω

Very low input capacitance: 1.5pF

Voltage Gain: 1,000,000 (min)

Gain-bandwidth product: 4.2MHz (typical)

Provides guaranteed specifications with ±5V supply

LT1793CS8 Applications

Photocurrent amplifiers

Hydrophone amplifiers

High-sensitivity piezoelectric accelerometers

Low voltage and current noise instrumentation amplifier front ends

Two- and three-op-amp instrumentation amplifiers

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• 1.Is the inventory and price seen on the platform accurate?

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