Difference between revisions of "TinySA"
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| Line 20: | Line 20: | ||
* Built | * Built | ||
| − | ** Standard | + | ** Standard 5% resistor values |
** R2 = 2 paralleled 120 Ohm 1/4W resistors paralleled with 470 ohms = 53.2 ohms | ** R2 = 2 paralleled 120 Ohm 1/4W resistors paralleled with 470 ohms = 53.2 ohms | ||
** R1 = 820 in parallel with 22K = 790.6 ohms | ** R1 = 820 in parallel with 22K = 790.6 ohms | ||
| Line 26: | Line 26: | ||
** Measured -29.6dB | ** Measured -29.6dB | ||
** 53.4 ohms | ** 53.4 ohms | ||
| + | ** 1/2W max | ||
[[file:30dB_Attenuator_R10.PNG]] | [[file:30dB_Attenuator_R10.PNG]] | ||
Revision as of 00:32, 6 September 2021
TinySA - Spectrum Analyzer
- Maximum input level
- 0 dBm = 1 mW
- dBm = 10*LOG(milliwatts)
- -10 dBm = 0.1 mW
- +10dBm = 10 mW
- +20dBm = 1000 mW
- 3.3V at 50 Ohm = 0.2178W
- 217.8 mW = 23.4 dBm
- tinySA wiki
Attenuators
30 dBm Attenuator
- Built
- Standard 5% resistor values
- R2 = 2 paralleled 120 Ohm 1/4W resistors paralleled with 470 ohms = 53.2 ohms
- R1 = 820 in parallel with 22K = 790.6 ohms
- Flat from 0-30 MHz
- Measured -29.6dB
- 53.4 ohms
- 1/2W max
Videos
