Implementation system of low-voltage reference source
A technology for realizing system and reference source, applied in the field of realizing low-voltage reference source system, it can solve the problems of high internal resistance, image mixed with streak interference, and few types, so as to reduce output load, reduce reference voltage fluctuation, and achieve flexible application. Effect
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[0013] Specific implementation mode 1. Combination figure 1 Describe this implementation mode, a low-voltage reference source realization system,
[0014] The reference source and its resistor divider circuit generate the required reference voltage through voltage division, and the noise of the reference source is filtered by the first RC passive low-pass filter circuit; the voltage output by the power supply is used as the power supply of the operational amplifier, and the second The RC passive low-pass filter circuit filters the noise of the power supply to reduce the noise to the output of the operational amplifier; on the one hand, the active low-pass filter circuit composed of the operational amplifier filters out high-frequency noise, allowing low-frequency DC signals to pass through, and on the other hand uses The low output resistance characteristic of the operational amplifier improves its load capacity; the output voltage of the active low-pass filter circuit compose...
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