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| EP20K60EFI324-2X资料 | |
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EP20K60EFI324-2X PDF Download |
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File Size : 116 KB
Manufacturer:ALTERA Description:Finally, trimming the various pins for lowest distortion deserves some attention. With pins 7 and 8 connected together and the pot at pin 7 and 8 externally set at its maxi- mum, adjust the ratio of RA and RB for 50% duty cycle. Then adjust a pot on pin 12 or both pins 1 and 12 depending on minimum distortion desired. After these trims have been made, set the voltage on pin 8 for the lowest frequency of interest. The principle error here is due to the excess current of Q7 causing a shift in the duty cycle. This can be partially compensated for by bleeding a small current away from pin 5. The simplest way to do this is to connect a high value of resistance (10MΩ to 20MΩ) from pin 5 to V- to bring the duty cycle back to 50%. This should result in a reasonable com- promise between low distortion and large sweep range. |
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| ◆ XC68HC912D60CPV8 | |
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| ◆ XC68HC912BD32CFU | |
| ◆ XC68HC912B32VFU8 | |
| ◆ XC68HC912B32MFU8 | |
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| ◆ XC56303VF100 | |
| 1PCS | 100PCS | 1K | 10K | ||
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型 号:EP20K60EFI324-2X 厂 家:ALTERA 封 装:110 批 号:06+ 数 量:BGA 说 明: |
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运 费: 所在地: 新旧程度: |
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| 公司地址: Huaqiang Electronic World, Futian District, Shenzhen, China |