CN202282766U - Filter circuit based on filter - Google Patents
Filter circuit based on filter Download PDFInfo
- Publication number
- CN202282766U CN202282766U CN2011204603419U CN201120460341U CN202282766U CN 202282766 U CN202282766 U CN 202282766U CN 2011204603419 U CN2011204603419 U CN 2011204603419U CN 201120460341 U CN201120460341 U CN 201120460341U CN 202282766 U CN202282766 U CN 202282766U
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- CN
- China
- Prior art keywords
- pin
- filter
- tlc04
- circuit based
- filter circuit
- 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
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Abstract
The utility model discloses a filter circuit based on a filter, comprising a filter TLC04 which comprises eight pins. A resistor RF is connected between the first pin and the second pin, the seventh pin and the fourth pin are connected with a positive power supply Vcc and a negative power supply Vss respectively, and the sixth pin is grounded; the eighth pin is connected with a signal input end, and the fifth pin is connected with a signal output end. In the utility model, by employing the above structure, the filter circuit based on the filter can possess a higher stability.
Description
Technical field
The utility model relates to a kind of filter circuit, specifically is a kind of filter circuit based on filter.
Background technology
Filter (filter) is a kind of device that is used for eliminating jamming incoherent signal, obtains pure direct current with inputing or outputing through filtration.To the circuit that the frequency or the frequency beyond this frequency of CF are carried out effective filtering, be exactly filter, its function obtains a CF exactly or eliminates a CF.TLC04 is the Butterworth quadravalence switching capacity low pass filter that American TI Company generates, and is the chief component of filter circuit, adopts the dual power supply of Schmidt trigger oscillator self-timing usually.TLC04 comprises 8 pins, and 1 pin is an input end of clock, and 2 pin are clock resistance terminal, and 3 pin are level mobile terminals, and 4 pin are negative supply inputs, and 5 pin are filter outputs, and 6 pin are earth terminals, and 7 pin are positive supply inputs, and 8 pin are filter input ends.The stability of the cut-off frequency of TLC04 is only relevant with clock frequency stability, and the cut-off frequency clock is adjustable, and its clock one cut-off frequency is than being 50:1.And the less stable of general filter or filter circuit, the factor that influences filter or filter circuit stability is more, is difficult for controlling.
The utility model content
The utility model provides a kind of filter circuit based on filter, has solved filter or filter circuit less stable in the past, and is difficult for controlling the problem of destabilizing factor.
The utility model is that the technical solution problem mainly realizes through following technical scheme: a kind of filter circuit based on filter; Comprise filter TLC04, said filter TLC04 comprises 8 pins, is connected with resistance R F between the 1st pin and the 2nd pin; The 7th pin and the 4th pin meet positive supply Vcc and negative supply Vss respectively; The 6th pin ground connection, the 8th pin connects signal input part, and the 5th pin connects signal output part.
Be connected to capacitor C F on the 1st pin of said filter TLC04, the other end ground connection of capacitor C F.
Be connected to negative supply Vss on the 3rd pin of said filter TLC04.
The utility model compared with prior art has the following advantages and beneficial effect: the utility model adopts TLC04 as filter; TLC04 is a Butterworth quadravalence switching capacity low pass filter; Be the chief component of filter circuit, adopt the dual power supply of Schmidt trigger oscillator self-timing usually, the stability of the cut-off frequency of TLC04 is only relevant with clock frequency stability; Therefore, be easy to obtain advantages of higher stability.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Embodiment
Below in conjunction with embodiment the utility model is done further to specify, but the execution mode of the utility model is not limited thereto.
Embodiment:
As shown in Figure 1; The utility model comprises filter TLC04, and said filter TLC04 comprises 8 pins, is connected with resistance R F between the 1st pin and the 2nd pin; The 7th pin and the 4th pin meet positive supply Vcc and negative supply Vss respectively; The 6th pin ground connection, the 8th pin connects signal input part, and the 5th pin connects signal output part.
Be connected to capacitor C F on the 1st pin of the filter TLC04 of present embodiment, the other end ground connection of capacitor C F.
Be connected to negative supply Vss on the 3rd pin of the filter TLC04 of present embodiment.
The operation principle of the utility model is: at first; Signal gets into from the 8th pin of TLC04; Realize in filter that then clock shaping, clock level move; The resistance R F and the capacitor C F that connect on the 1st pin of TLC04 and the 2nd pin can regulate, and obtain required clock frequency, through the 5th pin output of filtered signal from TLC04.
As stated, then can realize the utility model well.
Claims (3)
1. filter circuit based on filter; It is characterized in that: comprise filter TLC04, said filter TLC04 comprises 8 pins, is connected with resistance R F between the 1st pin and the 2nd pin; The 7th pin and the 4th pin meet positive supply Vcc and negative supply Vss respectively; The 6th pin ground connection, the 8th pin connects signal input part, and the 5th pin connects signal output part.
2. a kind of filter circuit based on filter according to claim 1 is characterized in that: be connected to capacitor C F on the 1st pin of said filter TLC04, the other end ground connection of capacitor C F.
3. a kind of filter circuit based on filter according to claim 1 is characterized in that: be connected to negative supply Vss on the 3rd pin of said filter TLC04.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204603419U CN202282766U (en) | 2011-11-18 | 2011-11-18 | Filter circuit based on filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204603419U CN202282766U (en) | 2011-11-18 | 2011-11-18 | Filter circuit based on filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202282766U true CN202282766U (en) | 2012-06-20 |
Family
ID=46228917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204603419U Expired - Fee Related CN202282766U (en) | 2011-11-18 | 2011-11-18 | Filter circuit based on filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202282766U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103532514A (en) * | 2012-07-03 | 2014-01-22 | 四川蓝讯宝迩电子科技有限公司 | Filter circuit based on wave filter |
-
2011
- 2011-11-18 CN CN2011204603419U patent/CN202282766U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103532514A (en) * | 2012-07-03 | 2014-01-22 | 四川蓝讯宝迩电子科技有限公司 | Filter circuit based on wave filter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120620 Termination date: 20121118 |