By switching the disable input of the op amp at a reference frequency and lowpass-filtering its output, you can obtain a dc voltage proportional to the phase difference of the switching frequency and the input frequency
| Authors | W Bruce Warren |
| Main Document | Article «Switched-gain op amp serves as phase detector or mixer» |
| Description | Figure 1 |
| File Format / Size | PDF / 27 Kb |
| Document Language | English |
