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Constant current/constant voltage generation circuit with reduced noise upon switching of operation mode
Constant current/constant voltage generation circuit with reduced noise upon switching of operation mode
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机译:恒定电流/恒定电压生成电路,可在切换操作模式时降低噪声
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摘要
In a circuit producing a reference voltage that is used in an internal circuit having an operation mode switched by utilizing a MOS transistor receiving a constant voltage on its gate, a signal changing in a direction controlling a voltage change caused on a gate node is applied to the gate or a drain of the MOS transistor receiving the constant voltage on the gate when the operation mode is switched. The constant voltage can be suppressed from varying through capacitive coupling of a parasitic capacitance of the constant voltage MOS transistor when the operation mode is switched, so that the reference voltage can be stably produced.
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