CN204859132U - Adopt 4580 to transport active low -pass filter circuit of putting - Google Patents
Adopt 4580 to transport active low -pass filter circuit of putting Download PDFInfo
- Publication number
- CN204859132U CN204859132U CN201520612568.9U CN201520612568U CN204859132U CN 204859132 U CN204859132 U CN 204859132U CN 201520612568 U CN201520612568 U CN 201520612568U CN 204859132 U CN204859132 U CN 204859132U
- Authority
- CN
- China
- Prior art keywords
- filter circuit
- resistance
- pass filter
- circuit
- electric capacity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Networks Using Active Elements (AREA)
- Amplifiers (AREA)
Abstract
The utility model discloses an adopt 4580 to transport active low -pass filter circuit of putting, put the operational circuit and the pi type filter circuit of chip including adopting 4580 fortune, operational circuit connects pi type filter circuit, pi type filter circuit is the pi type RC low pass filter circuit that electric capacity C2, electric capacity C3 and resistance R3 constitute, and the output of pi type RC low pass filter ware is connected with operational circuit, utilizes 4580 fortune to put the active low pass filter circuit of a section that the chip was put up, can with the low frequency signal that needs through and the signal amplification carries out, the high frequency signal that not need is held back to the while for the subsequent processing circuit can have a suitable frequency signal to handle.
Description
Technical field
The utility model relates to electronic circuit technology field, specifically, is the active low-pass filter circuit of a kind of employing 4580 amplifiers.
Background technology
Low pass filter allows to pass through lower than the signal of cut-off frequency, but higher than the intransitable electronic filtering device of signal of cut-off frequency.
Active low-pass filter:
Filter a kind ofly useful frequency signal can be made to pass through and suppress the electronic installation of unwanted frequency signal simultaneously, is usually used in the aspects such as signal transacting, transfer of data and AF panel, and active low-pass filter circuit is made up of integrated transporting discharging and passive component resistance and electric capacity.Its function be allow from zero to the signal of certain cut-off frequency undamped pass through, and have inhibitory action to the signal of other frequencies.Active low-pass filter circuit can be used for filtering high-frequency interferencing signal.
The effect of filter circuit is exactly allow the signal within the scope of certain band frequency to pass through, and stops or weaken the signal of other frequency ranges.Active filter circuit is made up of resistance, electric capacity and integrated operational amplifier, is also called active filter.Active filter can also play amplification to signal while filtering, and this is that passive filtering cannot be accomplished.Pass through according to filter circuit or stop signal frequency range different, filter circuit can be divided into low pass, high pass, band to lead to and band resistance circuit.
Amplifier, the abbreviation of operational amplifier is current most widely used a kind of device, although each middle different amplifier structure is different, for external circuit, its characteristic is all the same.Operational amplifier is generally made up of 4 parts, biasing circuit, input stage, intergrade, output stage, wherein input stage is generally adopt differential amplifier circuit (suppression power supply), and intergrade generally adopts the cascode load circuit (raising multiplication factor) of active load, and output stage generally adopts mutual symmetry output-stage circuit (improving the ability of drives load).
The performance index of operational amplifier comprise 5, open loop differential voltage amplification, maximum output voltage, difference-mode input resistance, output resistance, common-mode rejection ratio CMRR.(open loop differential mode multiplication factor refers to that integrated transporting discharging is in the multiplication factor without differential mode voltage when additional feedback loop.Under maximum output voltage refers to that it refers to certain voltage, the peak of the maximum nondistortion output voltage of integrated transporting discharging--peak value.The size of difference-mode input resistance reflects integrated transporting discharging input asks for size from electric current to differential input signal source.Require that it is larger better.The size of output resistance reflects the load capacity of integrated transporting discharging when small-signal exports.Common-mode rejection ratio has shown the rejection ability of integrated transporting discharging to common mode input signal, and it defines same differential amplifier circuit.CMRR is the bigger the better).
Utility model content
The purpose of this utility model is the active low-pass filter circuit providing a kind of employing 4580 amplifiers, utilize a active low-pass filter circuit that 4580 amplifier chips are built, the low-frequency signals of needs can be passed through and carry out signal amplification, unwanted high-frequency signal is retained simultaneously, make subsequent process circuit that a suitable frequency signal can be had to process.
The utility model is achieved through the following technical solutions: the active low-pass filter circuit of a kind of employing 4580 amplifiers, comprises discharge circuit and the π type filter circuit of employing 4580 amplifier chip, and described discharge circuit connects π type filter circuit.
Further for better to realize the utility model, described π type filter circuit is the π type RC low-pass filter circuit that electric capacity C2, electric capacity C3 and resistance R3 are formed, and the output of π type RC low pass filter is connected with discharge circuit.
Further for better to realize the utility model, described electric capacity C2 adopts 102pf ceramic disc capacitor, and described electric capacity C3 adopts 122pf ceramic disc capacitor, and described resistance R3 adopts 4.7K Ω resistance.
Further for better to realize the utility model, be also connected with resistance R4 at the input of described π type RC low pass filter, described resistance R4 adopts 5.8K Ω resistance.
Further for better to realize the utility model, described discharge circuit comprises 4580 amplifier chip IC 1, resistance R1, resistance R2, electric capacity C1, between the output that described electric capacity C1 is connected to 4580 amplifier chip IC 1 and inverting input; Described resistance R1 connects the output of π type filter circuit and the output of 4580 amplifier chip IC 1, the output of described π type filter circuit is connected with the inverting input of 4580 amplifier chip IC 1 by resistance R2, the in-phase input end ground connection of described 4580 amplifier chip IC 1.
Further for better to realize the utility model, described 4580 amplifier chip IC 1 adopt RC4580 amplifier chip, and described electric capacity C1 adopts 101pf ceramic disc capacitor, and described resistance R1 adopts 20K Ω resistance, and described resistance R2 adopts 4.7K Ω resistance.
Further for better to realize the utility model, described 4580 amplifier chip IC 1 adopt ± 9v Power supply.
The utility model compared with prior art, has the following advantages and beneficial effect:
A active low-pass filter circuit that the utility model utilizes 4580 amplifier chips to build, the low-frequency signals of needs can be passed through and carry out signal amplification, unwanted high-frequency signal is retained simultaneously, make subsequent process circuit that a suitable frequency signal can be had to process.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present utility model.
Embodiment
Below in conjunction with embodiment, the utility model is described in further detail, but execution mode of the present utility model is not limited thereto.
Embodiment 1:
The active low-pass filter circuit of a kind of employing 4580 amplifiers, utilize a active low-pass filter circuit that 4580 amplifier chips are built, the low-frequency signals of needs can be passed through and carry out signal amplification, unwanted high-frequency signal is retained simultaneously, make subsequent process circuit that a suitable frequency signal can be had to process, be provided with following structure especially: the discharge circuit and the π type filter circuit that comprise employing 4580 amplifier chip, described discharge circuit connects π type filter circuit.
Embodiment 2:
The present embodiment is at the enterprising one-step optimization in the basis of above-described embodiment, further for better to realize the utility model, as shown in Figure 1, described π type filter circuit is the π type RC low-pass filter circuit that electric capacity C2, electric capacity C3 and resistance R3 are formed, and the output of π type RC low pass filter is connected with discharge circuit.
Embodiment 3:
The present embodiment is at the enterprising one-step optimization in the basis of above-described embodiment, further for better to realize the utility model, as shown in Figure 1, described electric capacity C2 adopts 102pf ceramic disc capacitor, described electric capacity C3 adopts 122pf ceramic disc capacitor, and described resistance R3 adopts 4.7K Ω resistance.
Embodiment 4:
The present embodiment is at the enterprising one-step optimization in the basis of above-described embodiment, further for better to realize the utility model, as shown in Figure 1, is also connected with resistance R4 at the input of described π type RC low pass filter, and described resistance R4 adopts 5.8K Ω resistance.
Embodiment 5:
The present embodiment is at the enterprising one-step optimization in the basis of above-mentioned any embodiment, further for better to realize the utility model, as shown in Figure 1, described discharge circuit comprises 4580 amplifier chip IC 1, resistance R1, resistance R2, electric capacity C1, between the output that described electric capacity C1 is connected to 4580 amplifier chip IC 1 and inverting input; Described resistance R1 connects the output of π type filter circuit and the output of 4580 amplifier chip IC 1, the output of described π type filter circuit is connected with the inverting input of 4580 amplifier chip IC 1 by resistance R2, the in-phase input end ground connection of described 4580 amplifier chip IC 1.
Embodiment 6:
The present embodiment is at the enterprising one-step optimization in the basis of above-described embodiment, further for better to realize the utility model, as shown in Figure 1, described 4580 amplifier chip IC 1 adopt RC4580 amplifier chip, described electric capacity C1 adopts 101pf ceramic disc capacitor, described resistance R1 adopts 20K Ω resistance, and described resistance R2 adopts 4.7K Ω resistance.
Embodiment 7:
The present embodiment is at the enterprising one-step optimization in the basis of above-described embodiment, and further for better to realize the utility model, as shown in Figure 1, described 4580 amplifier chip IC 1 adopt ± 9v Power supply.
The above; it is only preferred embodiment of the present utility model; not do any pro forma restriction to the utility model, every any simple modification, equivalent variations done above embodiment according to technical spirit of the present utility model, all falls within protection range of the present utility model.
Claims (7)
1. adopt an active low-pass filter circuit for 4580 amplifiers, it is characterized in that: the discharge circuit and the π type filter circuit that comprise employing 4580 amplifier chip, described discharge circuit connects π type filter circuit.
2. the active low-pass filter circuit of a kind of employing according to claim 1 4580 amplifiers, it is characterized in that: described π type filter circuit is the π type RC low-pass filter circuit that electric capacity C2, electric capacity C3 and resistance R3 are formed, and the output of π type RC low pass filter is connected with discharge circuit.
3. the active low-pass filter circuit of a kind of employing according to claim 2 4580 amplifiers, it is characterized in that: described electric capacity C2 adopts 102pf ceramic disc capacitor, described electric capacity C3 adopts 122pf ceramic disc capacitor, and described resistance R3 adopts 4.7K Ω resistance.
4. the active low-pass filter circuit of a kind of employing 4580 amplifiers according to Claims 2 or 3, is characterized in that: be also connected with resistance R4 at the input of described π type RC low pass filter, described resistance R4 adopts 5.8K Ω resistance.
5. the active low-pass filter circuit of a kind of employing according to claim 1 4580 amplifiers, it is characterized in that: described discharge circuit comprises 4580 amplifier chip IC 1, resistance R1, resistance R2, electric capacity C1, between the output that described electric capacity C1 is connected to 4580 amplifier chip IC 1 and inverting input; Described resistance R1 connects the output of π type filter circuit and the output of 4580 amplifier chip IC 1, the output of described π type filter circuit is connected with the inverting input of 4580 amplifier chip IC 1 by resistance R2, the in-phase input end ground connection of described 4580 amplifier chip IC 1.
6. the active low-pass filter circuit of a kind of employing according to claim 5 4580 amplifiers, it is characterized in that: described 4580 amplifier chip IC 1 adopt RC4580 amplifier chip, described electric capacity C1 adopts 101pf ceramic disc capacitor, described resistance R1 adopts 20K Ω resistance, and described resistance R2 adopts 4.7K Ω resistance.
7. the active low-pass filter circuit of a kind of employing 4580 amplifiers according to claim 5 or 6, is characterized in that: described 4580 amplifier chip IC 1 adopt ± 9v Power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520612568.9U CN204859132U (en) | 2015-08-14 | 2015-08-14 | Adopt 4580 to transport active low -pass filter circuit of putting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520612568.9U CN204859132U (en) | 2015-08-14 | 2015-08-14 | Adopt 4580 to transport active low -pass filter circuit of putting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204859132U true CN204859132U (en) | 2015-12-09 |
Family
ID=54749643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520612568.9U Expired - Fee Related CN204859132U (en) | 2015-08-14 | 2015-08-14 | Adopt 4580 to transport active low -pass filter circuit of putting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204859132U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105024669A (en) * | 2015-08-14 | 2015-11-04 | 成都易思科科技有限公司 | Active low-pass filter circuit using 4580 operation amplifier |
| CN106209018A (en) * | 2016-08-01 | 2016-12-07 | 合肥佳瑞林电子技术有限公司 | A kind of high-power band filter of ground radar |
| CN106209019A (en) * | 2016-08-01 | 2016-12-07 | 合肥佳瑞林电子技术有限公司 | A kind of radar low-power consumption band filter |
-
2015
- 2015-08-14 CN CN201520612568.9U patent/CN204859132U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105024669A (en) * | 2015-08-14 | 2015-11-04 | 成都易思科科技有限公司 | Active low-pass filter circuit using 4580 operation amplifier |
| CN106209018A (en) * | 2016-08-01 | 2016-12-07 | 合肥佳瑞林电子技术有限公司 | A kind of high-power band filter of ground radar |
| CN106209019A (en) * | 2016-08-01 | 2016-12-07 | 合肥佳瑞林电子技术有限公司 | A kind of radar low-power consumption band filter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103219961A (en) | Bandwidth-adjustable operational amplifier circuit | |
| CN104348432B (en) | A kind of difference output gain-phase high balance and sane single turn double low-noise amplifier | |
| CN204859132U (en) | Adopt 4580 to transport active low -pass filter circuit of putting | |
| CN104000584A (en) | Weak signal acquisition circuit with high SNR (Signal to Noise Ratio) | |
| US7619472B1 (en) | Noise-shaped blocker-reject amplifier | |
| CN203071878U (en) | Wideband direct-current amplifier based on voltage-controlled operational amplifier | |
| CN102118668B (en) | Loudspeaker system and loudspeaker driving circuit | |
| CN107819445A (en) | A kind of big output voltage swing drive circuit of high speed | |
| CN103335679A (en) | Signal processing circuit of outflow-type electromagnetic flowmeter | |
| CN105024669A (en) | Active low-pass filter circuit using 4580 operation amplifier | |
| CN204517766U (en) | A kind of high-gain common mode feedback loop being applied to high impedance current source load differential mode amplification circuit | |
| CN101964936B (en) | Processing chip for digital microphone, input circuit thereof and digital microphone | |
| CN204929209U (en) | Microphone monomer that restraines resonance | |
| CN101997514A (en) | Active high-pass wave filter amplification circuit | |
| CN205566237U (en) | Low pass filter's variable gain instrument amplifier | |
| CN206117607U (en) | Active bandwidth -limited circuit of low frequency | |
| CN105897205A (en) | Low-pass filtering variable gain instrument amplifier | |
| CN104333336B (en) | Phase-splitting circuit applied to transimpedance amplification circuit | |
| CN206865425U (en) | Fourth-order band-pass wave filter with gain amplifier | |
| CN206728280U (en) | A kind of binaural sound amplifying circuit | |
| CN206195736U (en) | A filter circuit for signal processing | |
| CN207039550U (en) | A kind of anti-interference low bit error wave filter | |
| CN104053094B (en) | A kind of active rejector circuit | |
| CN207200676U (en) | The Zone electromagnetic interference preventing device of integrated circuit | |
| CN206117611U (en) | Passive filter circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151209 Termination date: 20160814 |