Auxiliary digital to analog converter and method for operating same

A digital-to-analog and data converter technology, applied in the field of auxiliary digital-to-analog converter devices, can solve problems such as large silicon area, and achieve the effects of small silicon area, low current consumption, and wide power supply range

Inactive Publication Date: 2018-03-09
IPGREAT INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

A system usually places multiple auxiliary DACs at the same time, so if the area of ​​the auxiliary DAC is not compact enough, the occupied silicon area will be a big problem

Method used

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  • Auxiliary digital to analog converter and method for operating same
  • Auxiliary digital to analog converter and method for operating same
  • Auxiliary digital to analog converter and method for operating same

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Embodiment Construction

[0024] The present invention will be described with respect to particular embodiments and with reference to certain drawings but the invention is not limited thereto but only by the claims. The drawings are only schematic diagrams and do not limit the invention. In the drawings, the size of some components may be exaggerated for illustrative purposes rather than the actual size.

[0025] Terms such as first, second, third and similar terms used in the detailed description and claims of the present invention are only used to distinguish similar components and not necessarily to describe a sequential or temporal order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the invention are capable of operation in other sequences than that described herein.

[0026] In addition, it should be noted that the term "comprising" used in the claims should not be interpreted as being limited by the means described...

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Abstract

The invention discloses an anxiliary digital to analog converter including a single-end capacitive digital to analog converter (DAC); a transconductance (GM) buffer having an output, a positive inputcoupled to the DAC and a negative input coupled to the output; a resistor and a capacitor load in parallel coupled to the output at one terminal and to ground at the other terminal. The developed architecture of comprising single end capacitive DAC and GM-based buffer provides fast conversion rate, low current consumption, small silicon area and wide supply range for general-purpose auxiliary DACapplications.

Description

technical field [0001] The present invention relates to a device and method for assisting a digital-to-analog converter, and in particular to a device and method for using a digital-to-analog converter with the characteristics of fast conversion, small area, ultra-low power and wide power supply range. Background technique [0002] An auxiliary digital to analog converter (DAC) is a common functional block in an integrated circuit system. In addition to being primarily used in industrial control and automated test applications, DACs are also used in automatic gain control (AGC) in communication transceiver ICs (communication transceivers ICs). For the servo control system (servo control system), the monotonic auxiliary DAC (monotonic auxiliary DAC) is crucial for the closure of the servo loop (servo loop). For data acquisition systems, auxiliary DACs are widely used for calibration or trimming of high-resolution data converters. For RF systems, the adoption of an auxiliary...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03M1/00H03M1/74
CPCH03M1/002H03M1/742H03M1/802H03M1/38H03M1/785
Inventor 赵渊儒朱大舜
Owner IPGREAT INC
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