AN2223 - PSoC® 1 - Approximating an Opamp with a Switched Capacitor Integrator | Cypress Semiconductor
AN2223 - PSoC® 1 - Approximating an Opamp with a Switched Capacitor Integrator
Opamps have simplified circuit design for engineers. They form a basic building block for the analog and mixed-signal design. PSoC 1 analog blocks, both continuous time (CT) and switched capacitor (SC) do not have a native opamp mode. They are wired so that they can create PGAs, INSAMPs, Filters, Integrators, and so on. However, in some designs only a plain opamp is required. This application note shows how to configure a switched capacitor block so that it approximates the functionality of an opamp.
The application note discusses the following topics:
- A brief explanation of how an opamp works.
- An explanation of how a switched capacitor integrator can emulate an opamp (faux opamp).
- Examples of faux opamp circuits.
This application note does not give in depth information about switched capacitor blocks. For more information please refer AN2041 PSoC 1 – Understanding PSoC 1 Switched Capacitor Analog Blocks.
|Supported H/W and S/W||Supported PSoC1 Devices|
|PSoC Designer Version||H/W Kit||CY8C20xxx||CY8C21xxx||CY8C22xxx||CY8C23xxx||CY8C24xxx||CY8C27xxx||CY8C28xxx||CY8C29xxx|