Differential Analog Circuit Switch
The circuit features a dual differential multiplexer configuration, which allows for the selection of multiple analog input signals while maintaining signal integrity. The FM1208 multiplexer is specifically designed to minimize the variations in on-resistance, ensuring that the selected signals are accurately represented at the output. This is particularly crucial in applications where precision is paramount, such as in instrumentation and sensor interfacing.
The LM107 operational amplifiers are selected for their low offset voltage and low bias current, which further enhances the accuracy of the circuit. These op-amps are configured in a way that optimizes the performance of the multiplexer, providing high input impedance and low output impedance, which is essential for driving loads without significant signal degradation.
In addition to the multiplexer and op-amps, the circuit may include passive components such as resistors and capacitors that help filter noise and stabilize the operation. Proper layout techniques should be employed to minimize parasitic capacitance and inductance, which can affect the performance of high-frequency signals.
Overall, this differential analog switch circuit is well-suited for applications requiring high precision and low error rates, making it an ideal choice for various electronic systems that demand reliable and accurate signal processing.This circuit is a differential analog circuit switches. The FM1208 monolithic dual differential multiplexer used in applications where the RDS (ON) must be the same match. Since RDS (ON) for monolithic dual tracks at better than 1% of the broad temperature range (-25 to 125 C) is making an unusual choice, but ideal for a multiplexer accurate.
This greatly reduces the close tracking errors due to common mode signals. OP-Amp used are LM107 🔗 External reference
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