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Differential to single-ended convertor

A converter, single-ended technology, applied in the field of differential to single-ended converters, can solve the problems of high power consumption, inability to use radio frequency circuits, limited application range, etc., and achieve large-scale effects

Inactive Publication Date: 2013-01-30
SHANGHAI HUAHONG GRACE SEMICON MFG CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the conventional differential-to-single-ended converter consumes too much power under high-frequency conditions, and the amplitude of the output signal is low, so it cannot be used in radio frequency circuits, and its application range is limited.

Method used

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  • Differential to single-ended convertor

Examples

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Embodiment Construction

[0026] As mentioned in the background, the conventional differential-to-single-ended converter consumes too much power under high-frequency conditions, and the amplitude of the output signal is low, so it cannot be used in radio frequency circuits, and its application range is limited.

[0027] For existing radio frequency circuits, as the frequency increases, the more stray capacitance and stray inductance, the greater the impact on circuit performance, so the radio frequency circuit should minimize stray capacitance and stray inductance to improve The response of the circuit, reducing the delay, and reducing the power consumption in the radio frequency circuit; wherein the stray inductance exists in the wires in the circuit and the self-inductance in the device, and the stray capacitance exists in the parasitic capacitance in the semiconductor device , and between the device and the ground, so the stray capacitance and stray inductance in the circuit cannot be avoided; it can...

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Abstract

The invention discloses a differential to single-ended convertor. The differential to single-ended convertor comprises an amplifying circuit, a phase inverting circuit, and a superposed circuit, wherein the amplifying circuit is used for receiving a first input signal and a second input signal, outputting a first amplified signal after amplifying the first input signal, and outputting a second amplified signal after amplifying the second input signal, wherein the phase of the first input signal is opposite to the second input signal; the inverting circuit is used for receiving the second amplified signal and outputting the second phase-inverted amplified signal after inverting the phase of the second amplified signal; and the superposed circuit is used for receiving the first amplified signal and the second phase-inverted amplified signal and outputting a superposed signal after superposing the first amplified signal and the second phase-inverted amplified signal. The differential to single-ended convertor can be applied to a radio-frequency circuit.

Description

technical field [0001] The invention relates to the technical field of integrated circuits, in particular to a differential-to-single-end converter. Background technique [0002] In prior art integrated circuits, devices with double-terminal differential outputs, such as oscillators, are usually used. In order to meet the application requirements of single-ended clocks in integrated circuits, it is usually necessary to convert double-ended signals into single-ended signals. At this time, a differential to single-ended converter (Differential to Single-Ended Convertor, D2C) is required to realize the conversion. . [0003] State-of-the-art differential to single-ended converters such as figure 1 As shown, it includes: a first amplifying circuit composed of a first NMOS transistor MN1, a first PMOS transistor MP1 and a second PMOS transistor MP2, the first differential signal is input from the gate of the first NMOS transistor MN1, and is transmitted by the The source of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03K5/13H03F3/45H03K5/134
Inventor 陈丹凤
Owner SHANGHAI HUAHONG GRACE SEMICON MFG CORP
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