阅读说明：本技术 可组态式放大器模块 (Configurable formula amplifier module ) 是由 杨思哲 林文琦 陈耿男 于 2018-05-21 设计创作，主要内容包括：本揭示涉及一种可组态式放大器模块,该可组态式放大器模块包括：一第一放大器,具有一非反相输入端、一反相输入端、以及一第一输出端；一第二放大器,具有一非反相输入端、一反相输入端、以及一第二输出端；一第一电阻；一第二电阻；一第三电阻；一侦测单元,连接至该第二放大器之该第二输出端并用于侦测是否有一电流流经该侦测单元；以及一控制单元,连接至该第二电阻及该侦测单元并用于根据该侦测单元之一侦测结果控制该第二电阻连接至该第三电阻或一直流信号。(This announcement is related to a kind of configurable formula amplifier module, which includes: one first amplifier, has a non-inverting input, an inverting input terminal and one first output end；One second amplifier has a non-inverting input, an inverting input terminal and a second output terminal；One first resistor；One second resistance；One 3rd resistor；Whether one detecting unit is connected to the second output terminal of second amplifier and has an electric current to flow through the detecting unit for detecting；And a control unit, it is connected to the second resistance and the detecting unit and is connected to the 3rd resistor or a direct current signal for controlling the second resistance according to one of detecting unit detecting result.)

1. a kind of configurable formula amplifier module characterized by comprising

One first amplifier has a non-inverting input, an inverting input terminal and one first output end, first amplification The non-inverting input of device is for receiving one first input signal；

One second amplifier has a non-inverting input, an inverting input terminal and a second output terminal, second amplification The non-inverting input of device is for receiving one second input signal, and wherein first input signal and second input signal are Differential signal；

One first resistor, has a first end and a second end, and the first end of the first resistor is connected to first amplification The second end of first output end of device, the first resistor is connected to the inverting input terminal of first amplifier；

One second resistance, has a first end and a second end, and the first end of the second resistance is connected to the first resistor The second end；

One 3rd resistor, has a first end and a second end, and the first end of the 3rd resistor is connected to second amplification The second end of the inverting input terminal of device, the 3rd resistor is connected to the second output terminal of second amplifier；

One detecting unit is connected to the second output terminal of second amplifier and detects for whether detecting to have an electric current to flow through this Survey unit；And

One control unit is connected to the second resistance and the detecting unit,

The second end that wherein control unit is used to control the second resistance according to one of detecting unit detecting result connects To the first end or a direct current signal of the 3rd resistor.

2. configurable formula amplifier module according to claim 1, which is characterized in that further comprise that a load is connected to Whether the detecting unit, the detecting unit have the electric current to flow through the detecting unit through the load validation.

3. configurable formula amplifier module according to claim 1, which is characterized in that the detecting unit does not detect the electricity Stream flows through the detecting unit, the second end which controls the second resistance be connected to the 3rd resistor this first End.

4. configurable formula amplifier module according to claim 1, which is characterized in that the detecting unit detects the electric current The detecting unit is flowed through, the second end which controls the second resistance is connected to the direct current signal.

5. configurable formula amplifier module according to claim 4, which is characterized in that the first resistor and the second resistance For trimmable resistance.

6. a kind of configurable formula amplifier module characterized by comprising

One first amplifier has a non-inverting input, an inverting input terminal and one first output end, first amplification The non-inverting input of device is for receiving one first input signal；

One second amplifier has a non-inverting input, an inverting input terminal and a second output terminal, second amplification The non-inverting input of device is for receiving a direct current signal；

One first resistor, has a first end and a second end, and the first end of the first resistor is connected to first amplification The second end of first output end of device, the first resistor is connected to the inverting input terminal of first amplifier；

One second resistance, has a first end and a second end, and the first end of the second resistance is connected to the first resistor The second end；

One 3rd resistor, has a first end and a second end, and the first end of the 3rd resistor is connected to second amplification The second end of the inverting input terminal of device, the 3rd resistor is connected to the second output terminal of second amplifier；

One detecting unit is connected to the second output terminal of second amplifier and detects for whether detecting to have an electric current to flow through this Survey unit；And

One control unit is connected to the second resistance and the detecting unit,

The second end that wherein control unit is used to control the second resistance according to one of detecting unit detecting result connects To the first end or the direct current signal of the 3rd resistor.

7. configurable formula amplifier module according to claim 6, which is characterized in that further comprise that a load is connected to Whether the detecting unit, the detecting unit have the electric current to flow through the detecting unit through the load validation.

8. configurable formula amplifier module according to claim 6, which is characterized in that the detecting unit does not detect the electricity Stream flows through the detecting unit, the second end which controls the second resistance be connected to the 3rd resistor this first End.

9. configurable formula amplifier module according to claim 6, which is characterized in that the detecting unit detects the electric current The detecting unit is flowed through, the second end which controls the second resistance is connected to the direct current signal.

10. configurable formula amplifier module according to claim 9, which is characterized in that the first resistor and second electricity Resistance is trimmable resistance.

Technical field

This announcement is related to amplifier technique field, more particularly to a kind of configurable formula amplifier module.

Background technique

In the existing operational amplifier (Operational Amplifier, OP) with both-end output, both-end is exported not It can be adjusted according to the variation of load.More particularly, when the one of them of both-end output does not need in use, the one of them (turned off) cannot be closed.Therefore, the power wastage of operational amplifier is caused.

Therefore it needs to propose a kind of solution for above-mentioned problem of the prior art.

Summary of the invention

This announcement provides a kind of configurable formula amplifier module, can solve the problems of the prior art.

The configurable formula amplifier module of this announcement includes: one first amplifier, has a non-inverting input, a reverse phase Input terminal and one first output end, the non-inverting input of first amplifier is for receiving one first input signal；One Second amplifier, has a non-inverting input, an inverting input terminal and a second output terminal, which is somebody's turn to do Non-inverting input is for receiving one second input signal, and wherein first input signal and second input signal are difference letter Number；One first resistor, has a first end and a second end, and the first end of the first resistor is connected to first amplifier First output end, the second end of the first resistor is connected to the inverting input terminal of first amplifier；One second electricity Resistance, has a first end and a second end, and the first end of the second resistance is connected to the second end of the first resistor；One 3rd resistor, has a first end and a second end, and the first end of the 3rd resistor is connected to being somebody's turn to do for second amplifier The second end of inverting input terminal, the 3rd resistor is connected to the second output terminal of second amplifier；One detecting unit, even It is connected to the second output terminal of second amplifier and whether there is an electric current to flow through the detecting unit for detecting；And one control Unit, is connected to the second resistance and the detecting unit, which is used for according to the detecting result control of one of the detecting unit The second end for making the second resistance is connected to first end or a direct current signal of the 3rd resistor.

The configurable formula amplifier module of this announcement includes: one first amplifier, has a non-inverting input, a reverse phase Input terminal and one first output end, the non-inverting input of first amplifier is for receiving one first input signal；One Second amplifier, has a non-inverting input, an inverting input terminal and a second output terminal, which is somebody's turn to do Non-inverting input is for receiving a direct current signal；One first resistor has a first end and a second end, the first resistor The first end be connected to first output end of first amplifier, the second end of the first resistor is connected to this and first puts The inverting input terminal of big device；One second resistance, has a first end and a second end, and the first end of the second resistance connects It is connected to the second end of the first resistor；One 3rd resistor, has a first end and a second end, the 3rd resistor this One end is connected to the inverting input terminal of second amplifier, the second end of the 3rd resistor be connected to second amplifier it The second output terminal；One detecting unit is connected to the second output terminal of second amplifier and whether has an electricity for detecting Stream flows through the detecting unit；And a control unit, it is connected to the second resistance and the detecting unit, which is used for root According to the second end that one of detecting unit detecting result controls the second resistance be connected to the 3rd resistor the first end or The direct current signal.

In the configurable formula amplifier module of this announcement, can penetrate whether the load is set to adjust the configurable formula and put Big device module is both-end output amplifier or Single-end output amplifier, when the configurable formula amplifier module is Single-end output amplification When device, the one of them of first amplifier and second amplifier can be closed to achieve the purpose that save power consumption.Furthermore when this When configurable formula amplifier module is Single-end output amplifier, the resistance value for adjusting the first resistor and the second resistance can pass through Increase amplification factor.

For the above content of this announcement can be clearer and more comprehensible, preferred embodiment is cited below particularly, and cooperate institute's accompanying drawings, makees Detailed description are as follows:

Detailed description of the invention

Fig. 1 shows the configurable formula amplifier module according to one embodiment of this announcement.

Fig. 2 shows the configurable formula amplifier module according to another embodiment of this announcement.

Specific embodiment

To keep the purpose, technical solution and effect of this announcement clearer, clear, develop simultaneously embodiment pair referring to schema This announcement is further described.It should be appreciated that specific embodiment described herein is only to explain that this announcement, this announcement are said The word " embodiment " used in bright book means serving as example, example or illustration, is not used to limit this announcement.In addition, originally taking off Show that the article " one " used in specification and appended book can generally be interpreted to mean " one or more ", It unless specified otherwise or can understand from context and determine singular.Also, in institute's accompanying drawings, structure, function it is similar or Identical component is indicated with same components labels.

Referring to Fig. 1, Fig. 1 shows the configurable formula amplifier module according to one embodiment of this announcement.

The configurable formula amplifier module includes one first amplifier 10, one second amplifier 12, a first resistor R1, one Second resistance R2, a 3rd resistor R3, a detecting unit 14, one load 16 and a control unit 18.

First amplifier 10 have a non-inverting input+, an inverting input terminal-and one first output end 100. The non-inverting input of first amplifier 10+for receiving one first input signal Va1.

Second amplifier 12 have a non-inverting input+, an inverting input terminal-and a second output terminal 120. The non-inverting input of second amplifier 12+for receiving one second input signal Va2.

In this present embodiment, the first input signal Va1 and the second input signal Va2 is differential signal (differential signals)。

First resistor R1 has a first end and a second end.The first end of first resistor R1 be connected to this First output end 100 of one amplifier 10.The second end of first resistor R1 be connected to first amplifier 10 this is anti- Phase input terminal-.

Second resistance R2 has a first end and a second end.The first end of second resistance R2 be connected to this The second end of one resistance R1.

3rd resistor R3 has a first end and a second end.The first end of 3rd resistor R3 be connected to this The inverting input terminal-of two amplifiers 12.The second end of 3rd resistor R3 be connected to second amplifier 12 this second Output end 120.

The detecting unit 14 is connected between the second output terminal 120 of second amplifier 12 and the load 16.This is detectd Whether survey unit 14 has an electric current to flow through the detecting unit 14 for detecting.

The control unit 18 is connected to second resistance R2 and the detecting unit 14.

The configurable formula amplifier module of this announcement further comprises that the load 16 is connected to the detecting unit 14, the detecting Unit 14 is confirmed whether have the electric current to flow through the detecting unit 14 through the load 16.More particularly, when the not set load When 16, which will not be generated, therefore the detecting unit 14 does not detect the electric current and flows through the detecting unit 14, the control unit 18 for according to one of the detecting unit 14 detecting result, (i.e. the detecting unit 14 not to detect the electric current and flows through the detecting unit 14) second end for controlling second resistance R2 is connected to the first end of 3rd resistor R3.The configurable formula amplifier mould Block is as one double-width grinding-both-end output amplifier.Double-width grinding include first amplifier 10 the non-inverting input+and The non-inverting input of second amplifier 12+.Both-end output include first amplifier 10 first output end 100 and The second output terminal 120 of second amplifier 12.

When the load 16 is arranged, which can be generated, therefore the detecting unit 14 detects the electric current and flows through the detecting Unit 14, the control unit 18 is for according to the detecting result of the detecting unit 14, (i.e. the detecting unit 14 to detect the electricity Stream flows through the detecting unit 14) second end that controls second resistance R2 is connected to a direct current signal Vcm.The configurable formula is put Big device module is as one double-width grinding-Single-end output amplifier.Double-width grinding include first amplifier 10 this is noninverting defeated Enter end+and the second end of second resistance R2.Single-end output includes first output end 100 of first amplifier 10.By In first input signal Va1 be input to the non-inverting input of first amplifier 10+, the configurable formula amplifier module It is configured as a non-inverting amplifier.Second amplifier 12 can be closed by the control unit 18 or other control circuits (turned off) achievees the purpose that save power consumption whereby.

When the configurable formula amplifier module is as double-width grinding-Single-end output amplifier, due to be only left this first Amplifier 10 is used, therefore gain can reduce.In an embodiment, first resistor R1 and second resistance R2 are adjustable Resistance.The configurable formula amplifier module can pass through adjustment first resistor R1 and second resistance R2 resistance value (such as by The resistance value of the control unit 18 adjustment first resistor R1 and second resistance R2) to increase the double-width grinding-Single-end output The amplification factor of amplifier (first amplifier 10).

The detecting unit 14 and the load 16 can be set to first output of first amplifier 10 by similar mode End 100.Achieve the purpose that save power consumption through first amplifier 10 is closed.

Referring to Fig. 2, Fig. 2 shows the configurable formula amplifier module according to another embodiment of this announcement.

The difference of the configurable formula amplifier module of the configurable formula amplifier module and Fig. 1 of Fig. 2 is that Fig. 2's is configurable In formula amplifier module, the non-inverting input of first amplifier 10+for receiving one first input signal Va1, this The non-inverting input of two amplifiers 12+for receiving a direct current signal Vcm.That is, the first input signal Va1 and Direct current signal Vcm is not differential signal.The part not described sees the description of Fig. 1 correlation, this does not add to repeat.

When the not set load 16, which will not be generated, therefore the detecting unit 14 does not detect the electric current and flows through The detecting unit 14, the control unit 18 is for according to one of the detecting unit 14 detecting result, (i.e. the detecting unit 14 not to be detectd Measure the electric current and flow through the detecting unit 14) control second resistance R2 the second end be connected to 3rd resistor R3 this One end.Due to second amplifier 12 the non-inverting input+receive direct current signal Vcm, the configurable formula amplifier mould Block is as one double-width grinding-both-end output amplifier.Double-width grinding include first amplifier 10 the non-inverting input+and The non-inverting input of second amplifier 12+.Both-end output include first amplifier 10 first output end 100 and The second output terminal 120 of second amplifier 12.

When the load 16 is arranged, which can be generated, therefore the detecting unit 14 detects the electric current and flows through the detecting Unit 14, the control unit 18 is for according to the detecting result of the detecting unit 14, (i.e. the detecting unit 14 to detect the electricity Stream flows through the detecting unit 14) second end that controls second resistance R2 is connected to direct current signal Vcm.The configurable formula is put Big device module is as one double-width grinding-Single-end output amplifier.Double-width grinding include first amplifier 10 this is noninverting defeated Enter end+and the second end of second resistance R2.Single-end output includes first output end 100 of first amplifier 10.By In first input signal Va1 be input to the non-inverting input of first amplifier 10+, the configurable formula amplifier module It is configured as a non-inverting amplifier.Second amplifier 12 can be closed by the control unit 18 or other control circuits, whereby Achieve the purpose that save power consumption.

When the configurable formula amplifier module is as double-width grinding-Single-end output amplifier, due to be only left this first Amplifier 10 is used, therefore gain can reduce.In an embodiment, first resistor R1 and second resistance R2 are adjustable Resistance.The configurable formula amplifier module can through adjustment first resistor R1 and second resistance R2 resistance value (such as By the resistance value of the control unit 18 adjustment first resistor R1 and second resistance R2) it is single-ended defeated to increase the double-width grinding- The amplification factor of amplifier (first amplifier 10) out.

The detecting unit 14 and the load 16 can be set to first output of first amplifier 10 by similar mode End 100.Achieve the purpose that save power consumption through first amplifier 10 is closed.

In the configurable formula amplifier module of this announcement, can penetrate whether the load is set to adjust the configurable formula and put Big device module is both-end output amplifier or Single-end output amplifier, when the configurable formula amplifier module is Single-end output amplification When device, the one of them of first amplifier and second amplifier can be closed to achieve the purpose that save power consumption.Furthermore when this When configurable formula amplifier module is Single-end output amplifier, the resistance value for adjusting the first resistor and the second resistance can pass through Increase amplification factor.

Although above preferred embodiment is not to limit in conclusion this announcement is disclosed above with preferred embodiment This announcement is made, those skilled in the art can make various changes and profit in the spirit and scope for not departing from this announcement Decorations, therefore the protection scope of this announcement subjects to the scope of the claims.