Low cost ph meter

With a guaranteed 1 pA input bias, the ICL 8007A is ideal for use as a pH meter or for long-term sample and hold applications.

The ICL 8007A is a precision operational amplifier specifically designed for low-level signal processing, making it particularly well-suited for applications requiring high input impedance and low bias current. Its guaranteed input bias current of 1 pA ensures minimal interference with sensitive measurements, such as those encountered in pH meter applications. This low bias current is crucial when measuring high-impedance sensors, as it prevents the loading effect that can distort readings.

In pH measurement systems, the ICL 8007A can be configured in a non-inverting amplifier setup, where the pH sensor output is fed directly into the amplifier. The high input impedance of the ICL 8007A allows it to accurately capture the small voltage changes produced by the pH sensor without affecting its operation. This configuration can be further enhanced with a suitable feedback network to provide the desired gain and bandwidth for the application.

For long-term sample and hold operations, the ICL 8007A can be integrated into a sample and hold circuit design, where it can maintain the voltage level of the input signal for a defined period. This is particularly useful in data acquisition systems where it is necessary to capture transient signals and hold them stable for analog-to-digital conversion. The low input bias current ensures that the sample and hold circuit retains accuracy over extended periods, making the ICL 8007A a reliable choice for precision applications.

In summary, the ICL 8007A operational amplifier offers exceptional performance for applications requiring low input bias current and high input impedance, making it an ideal component for pH meters and long-term sample and hold circuits in various electronic systems.With guaranteed 1 pA input bias, the ICL 8007A is ideal as a pH meter or long term sample and hold.