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Voltage amplitude limiting circuit

A voltage limiting and circuit technology, which is applied in the field of control switch structure and voltage limiting circuit, can solve the problems of limiting the dynamic function of DAC, and achieve the effect of reducing burrs and stabilizing the swing

Inactive Publication Date: 2017-05-10
INST OF MICROELECTRONICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When there is no amplitude circuit in the circuit, usually V 0 The size of VDD is high, and the voltage is high. Due to the influence of clock feedthrough, the fast-jumping digital signals INN and INP will generate large glitches at the output of the DAC, which severely limits the dynamic function of the DAC.

Method used

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Embodiment Construction

[0016] Certain embodiments of the invention will be described more fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments are shown. Indeed, various embodiments of the invention may be embodied in many different forms and should not be construed as limited to these set forth embodiments; rather, these embodiments are provided so that this invention will satisfy applicable legal requirements.

[0017] In this specification, the various embodiments described below to describe the principles of the present invention are illustrative only and should not be construed as limiting the scope of the invention in any way. The following description with reference to the accompanying drawings is provided to assist in a comprehensive understanding of exemplary embodiments of the present invention as defined by the claims and their equivalents. The following description includes numerous specific details to aid in understanding, but these shoul...

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Abstract

The invention discloses a voltage amplitude limiting circuit comprising a biasing structure circuit used for forming a first stable reference voltage and a second stable reference voltage; and a transmission gate control circuit used for controlling on and off of a transmission gate to generates a first switch control signal and a second switch control signal by using the first reference voltage and the second reference voltage.

Description

technical field [0001] The invention relates to the technical field of integrated circuits, and more specifically relates to a voltage limiting circuit, which is used to control a control switch structure of a current source in a current-steering digital-to-analog converter. Background technique [0002] Digital to Analog Converter (DAC) is an important interface circuit capable of converting digital signals into analog signals, and is an important part of a signal processing system. Current Steering DAC (CurrentSteering DAC) has the advantages of fast speed, high precision, strong driving ability, etc., and is widely used in image, video, communication and other fields. The working principle of the current steering DAC (digital-to-analog converter) is to control the corresponding current source switch according to the input digital signal, and after the current is summed, it passes through a resistor to complete the transformation from current to voltage. [0003] A typica...

Claims

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Application Information

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IPC IPC(8): H03M1/06H03M1/66
CPCH03M1/0607H03M1/66
Inventor 熊利伟杜占坤
Owner INST OF MICROELECTRONICS CHINESE ACAD OF SCI