Correctable low-power consumption voltage reference source with power-on reset function
A technology of voltage reference source and electrical reset, applied in the field of power supply, can solve the problems of high cost and inability to judge the power supply voltage, and achieve the effect of small area, low power consumption and high precision
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[0019] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments, so as to obtain a better understanding.
[0020] Figure 5 Shown is a circuit connection diagram of a correctable low-power voltage reference source with power-on reset in the present invention, including a power-on reset circuit, a startup circuit, a core circuit of a reference voltage source, a reference voltage correction circuit, and a buffer circuit. The present invention utilizes the characteristics of low current of MOS tubes in the sub-threshold region to design a reference voltage source with power-on reset, correctability, low power consumption, small area and low temperature coefficient.
[0021] image 3 Shown is the reference voltage source core circuit and buffer circuit, transistor M 1 with M 4 , M 3 with M 6 A cascode structure is formed respectively, which effectively improves the power supply rejection ra...
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