Datenblatt-Suchmaschine für elektronische Bauteile |
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TSH346 Datenblatt(PDF) 8 Page - STMicroelectronics |
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TSH346 Datenblatt(HTML) 8 Page - STMicroelectronics |
8 / 18 page Power supply considerations and improvement of the PSRR TSH346 8/18 3 Power supply considerations and improvement of the PSRR Correct power supply bypassing is very important to optimize performance in low and high- frequency ranges. Bypass capacitors should be placed as close as possible to the IC pin (pin 4) to improve high-frequency bypassing. A capacitor (CLF) greater than 10 µF is necessary to improve the PSRR in low frequencies. For better quality bypassing, a capacitor of 100 nF (CHF) can be added. CHF must be placed as close as possible to the IC pin, to improve the noise supply rejection in the higher frequency ranges. A coil can be added in order to better reject the noise from the supply and to prevent current peaks as much as possible. Figure 21. Circuit for power supply bypassing +VCC C LF + C HF TSH346 R G B 4 5 Coil AM00824 |
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