Reference source circuit and electronic equipment

Abstract

The invention discloses a reference source circuit and electronic equipment, and relates to the technical field of integrated circuits, the reference source circuit comprises a voltage and current reference generation module, and the voltage and current reference generation module comprises a first PMOS tube, a second PMOS tube, a second mirror current device, an NMOS voltage division branch, a first resistor, a first capacitor, a fifth NMOS tube and a sixth NMOS tube. The reference current signal, the reference voltage signal and the reference frequency signal can be generated through the voltage and current reference generation module and the frequency reference generation module, the circuit structure is simple, the voltage and current reference generation module does not need to use a power-consuming operational amplifier, and power consumption can be reduced.

Description

Technical field [0001] The present invention relates to the field of integrated circuit technology, in particular to a reference source circuit and electronic devices. Background [0002] In integrated circuits, a reference source is usually provided to ensure the reliable operation of the circuit. In related technologies, the general reference circuit is only used to generate a reference signal (such as a current reference signal or a voltage reference signal), and a small number of reference circuits can use the zero temperature coefficient characteristics of the NMOS tube to generate both current and voltage references at the same time to provide a two-in-one ultra-low-power reference signal, but still can not meet the application needs of some occasions. In addition, although the 2-in-1 ultra-low-power reference circuit of the related technology can reduce the use of op amps, it requires a super-large resistance (100 megohm) resistor for the nanoampere level of current refere...

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Problems solved by technology

In the related art, the general reference source circuit is only used to generate a reference signal (such as a current reference signal or a voltage reference signal), and a small number of reference source circuits can generate both current and voltage references at the same time by utilizing the zero temperature coefficient characteristic of the NMOS tube. To provide a two-in-one ultra-low power reference signal, but still cannot meet the application requirements of some occasions

In addition, although the two-in-one ultra-low power reference circuit of the related art can reduce the use of operational amplifiers, it needs a resistor with a large resistance value (100 megaohms) to realize it for a current reference source at the nanoamp level, which will Increased power consumption and area cost

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