0-5v to -10v—+10v voltage

NothingDine

0-5v to -10v—+10v voltage [Copy link]

How do I convert the 0-5v voltage output by the microcontroller DA into a -10v-+10v voltage? Are there any ready-made conversion chips or circuits?

maychang

The 0-5v voltage output by the microcontroller DA is converted into a -10v—+10v voltage. A 2.5V reference voltage is first subtracted from the DA output, and then accurately amplified by 4 times.

chunyang

To build a circuit with an operational amplifier, you need a positive and negative dual power supply. As mentioned above, you can just add and amplify by subtraction.

philips_lu

chunyang posted on 2019-11-24 14:51 To build a circuit with an operational amplifier, you need a positive and negative dual power supply. As mentioned above, you can just add and amplify by subtraction.

Top one, there is another idea of digital power amplifier

chunyang

philips_lu posted on 2019-11-25 22:24 I like this one. There is another idea of digital amplifier

Digital power amplifier solutions are suitable for occasions that require high power output, and may have low-frequency or even DC operating parameter requirements for digital power amplifiers. Linearity, accuracy and other indicators are more difficult to achieve a better level than op amps, so they are usually just special cases of flexible applications and are not universal. In most cases, op amp circuits are still used. Of course, the original poster did not explain the specific application requirements clearly. Without this premise, the digital power amplifier solution is also the correct answer.

philips_lu

chunyang published on 2019-11-26 16:25 The digital power amplifier solution is suitable for occasions that require higher power output, and may have low-frequency or even DC working parameter requirements for the digital power amplifier, linearity, precision...