PA85

The PA85 is an instrumentation op-amp designed to provide excellent accuracy, stability, and reliability in most applications. It is suitable for use in low-level instrumentation and control circuits such as AC/DC and DC/DC converters, data acquisition systems, automotive and industrial control systems, and even medical instrumentation.

The PA85 is a general-purpose operational amplifier that provides 0.8 V/μs slew rate, 38MHz gain bandwidth, 1.0 μA supply current, and 10 mA output drive capability. It features a comparatively wide range of input and output voltage swings as well as a wide bandwidth of -3dB at 6MHz. It has a low input offset voltage at 0.75mV and a low input bias current of 1.5pA. The supply voltage range is 4.75 V to 16.5 V.

The working principle of the PA85 is simple. It has two inputs and one output. The inputs are referred to as the inverting and non-inverting inputs. The output voltage is equal to the differential voltage between the two inputs multiplied by a gain factor set by the user. The inverting input is used as the reference for the output voltage and the non-inverting input is connected to the voltage input. The device then amplifies the difference between the two inputs, unless the gain is set to zero.

The PA85 has a slew rate of 0.8 V/μs and an open-loop gain of 1 million or greater. It is able to accurately measure small signals up to 1.3V peak-to-peak and larger signals up to 30V peak-to-peak when the gain is set to 10V/V. It also has a high input impedance of 200kΩ, meaning that it does not draw much current from the connected voltage source.

The PA85 can be used for a variety of applications in both industrial and automotive applications. It is often used as a current loop in industrial control applications such as servos, DC and stepper motors, and also in automotive applications such as ABS systems. The PA85 can also be used in data acquisition systems to accurately measure analogue signals and convert them to digital values.

The PA85 is a versatile device and is suitable for a wide range of applications. Its low power consumption, wide input and output voltage swings, wide gain bandwidth, and low input bias current make it one of the best choices for precision instrumentation and control applications.