Jester
Full Member level 6
![Full Member level 6](/styles/images/ranks/flevel3.gif)
I have the need for a low frequency (say 1kHz) oscillator as follows:
- Really inexpensive
- Reliable start-up -40 +90 deg C
- 0-5V output @ <10uA
- Accuracy 20%
- Duty cycle 25 - 75%
- power source; +5Vdc
The tried and true 555 circuit is pretty cheap: $0.44@qty10, or $0.22@qty100 (Digi-Key pricing)
Does anyone have a cheaper or more elegant solution?
![1kHz.png 1kHz.png](https://www.edaboard.com/data/attachments/52/52316-e8778bb7e403dba74dba3ecfe4250837.jpg)
- Really inexpensive
- Reliable start-up -40 +90 deg C
- 0-5V output @ <10uA
- Accuracy 20%
- Duty cycle 25 - 75%
- power source; +5Vdc
The tried and true 555 circuit is pretty cheap: $0.44@qty10, or $0.22@qty100 (Digi-Key pricing)
Does anyone have a cheaper or more elegant solution?
![1kHz.png 1kHz.png](https://www.edaboard.com/data/attachments/52/52316-e8778bb7e403dba74dba3ecfe4250837.jpg)