AN2223 - PSoC® 1 - Approximating an Opamp with a Switched Capacitor Integrator
Last Updated: 12/11/2012
|
|
|
Version: *C
|
| AN2223 demonstrates how a switched capacitor Integrator can approximate an Opamp. |
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.
Example Project |
Supported H/W and S/W |
Supported PSoC1 Devices |
|
PSoC Designer Version |
H/W Kit |
CY8C20xxx |
CY8C21xxx |
CY8C22xxx |
CY8C23xxx |
CY8C24xxx |
CY8C27xxx |
CY8C28xxx |
CY8C29xxx |
|
Yes |
5.1 |
CY3210-PSoCEVAL1 |
|
|
|
|
x23A, x94 |
x43 |
x |
x66 |
|
这些文档仅供参考。赛普拉斯、赛普拉斯管理层、雇员及分销商对翻译错误不承担任何责任。当您在设计开发过程中使用这些文档时，我们强烈建议您参照英文版本。
これらの文献はあくまでもご参考のためのみに日本語翻訳されています。誤訳によるトラブルが発生した場合、Cypress Semiconductor Corp. 全ての子会社、関連会社、役員、従業員、販売代理店は一切の責任を負いかねます。
最新の英語版オリジナル文献を必ずご参照いただくことをお勧め致します。
Related Application Notes:
Domain Tags: Analog, Amplifiers, Opamp, TIA, Signal Conditioning
Market Segment Tags: Industrial Equipment, Consumer Equipment, Energy & Lighting, Medical
Related Knowledge Base: Analog, Opamp, SC Block, Switch Capacitor
Spec No: 001-33763;
Sunset Owner: GRAA;
Secondary Owner: GULA;
Sunset Date: 06/06/11
|
|