CN201699849U - Integrated circuit with bias and polarization choice function - Google Patents
Integrated circuit with bias and polarization choice function Download PDFInfo
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- CN201699849U CN201699849U CN2010202405813U CN201020240581U CN201699849U CN 201699849 U CN201699849 U CN 201699849U CN 2010202405813 U CN2010202405813 U CN 2010202405813U CN 201020240581 U CN201020240581 U CN 201020240581U CN 201699849 U CN201699849 U CN 201699849U
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- circuit
- reference voltage
- current
- amplifier tube
- integrated circuit
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Abstract
An integrated circuit with bias and polarization choice function comprises a reference voltage and current circuit, a control circuit, a first and a second amplifying pipe bias and protection circuits, a third amplifying pipe bias and protection circuit, a negative voltage generating circuit and a drain current regulator circuit. According to the comparison result of polarization choice signals which are input by an external signal receiving device and reference voltage and current signals which are provided by the reference voltage and current circuit, the control circuit chooses a horizontal or vertical polarization access to be in work state. The first and the second amplifying pipe bias and protection circuits are respectively connected with a first amplifying pipe and a second amplifying pipe which are externally arranged to form the horizontal and the vertical polarization accesses. The third amplifying pipe bias and protection circuit is connected with an external third amplifying pipe. The negative voltage generating circuit is connected with the reference voltage and current circuit and is used for providing negative voltage for the first, the second and the third amplifying pipe bias and protection circuits. The drain current regulator circuit is connected with the reference voltage and current circuit and is used for adjusting drain current which is transported to the first, the second and the third amplifying pipes. The utility model has the advantages of high stability, low cost, and simple structure, is applicable to mass production and can be applied to satellite TV tuner and the like.
Description
Technical field
The utility model relates to a kind of LNB (Low Noise Block, tuner) in the satellite television receiving equipment, relates in particular to the integrated circuit that has biasing and polarization selection function concurrently among a kind of LNB of can be applicable to.
Background technology
Along with developing rapidly of satellite television, the kind of LNB is also more and more abundanter, but every kind of LNB needs corresponding biasing and polarization to select circuit.Tradition LNB circuit mostly adopts discrete device, but uses the discrete device system loaded down with trivial details, poor stability, and the production cycle is long, and cost is higher.Adopted integrated circuit though some LNB also occur at present, had biasing concurrently and the LNB of the particular types of the selection that polarizes for needs, these circuit design still can not provide suitable pin function.
The utility model content
The purpose of this utility model is to propose a kind of LNB that can be the particular types that has biasing and polarization selection concurrently the integrated circuit of proper function and pin position etc. is provided, thereby overcomes deficiency of the prior art.
For achieving the above object, the utility model has adopted following technical scheme:
A kind of integrated circuit that has biasing and polarization selection function concurrently comprises:
Reference voltage and current circuit are for other circuit modules provide required normal voltage of work or electric current;
Control circuit, it can be according to the reference voltage of being selected signal and reference voltage and current circuit to provide by the polarization of peripheral hardware signal receiver input or the comparative result of current signal, and it is in running order to choose one of a horizontal polarization path and a perpendicular polarization path;
First, second amplifier tube bias and protective circuit, it is connected to form horizontal polarization path and perpendicular polarization path with first, second amplifier tube of peripheral hardware respectively, also is connected with control circuit respectively simultaneously;
The 3rd amplifier tube bias and protective circuit, it is connected with the 3rd amplifier tube of peripheral hardware;
Negative voltage generation circuit, it is connected with reference voltage and current circuit, in order to provide negative voltage to first, second, third amplifier tube bias and protective circuit;
Drain current adjustment circuit, it is connected with reference voltage and current circuit, in order to adjust respectively the drain current of transporting to first, second, third amplifier tube through first, second, third amplifier tube bias and protective circuit.
Say further: described integrated circuit also comprises comparison circuit, and will polarize reference voltage or the current signal of selecting signal and reference voltage and current circuit to provide of this comparison circuit compares, and exports comparative result to control circuit.
Described negative voltage generation circuit comprises negative voltage generation module and oscillator, and described oscillator is connected with the negative voltage generation module with reference voltage and current circuit respectively, also connects an electric capacity between its bipod simultaneously.
Described negative voltage generation module is through a capacity earth.
Described drain current adjustment circuit comprises the drain current adjusting module, and this drain current adjusting module is connected with first, second, third amplifier tube bias and protective circuit with reference voltage and current circuit respectively, and simultaneously through a variable resistor ground connection.
Described peripheral hardware signal receiver comprises other module except that integrated circuit described in the utility model in satellite signal receiver and the tuner.
Compared with prior art, the utlity model has following advantage:
(1) required peripheral components is few, only external two electric capacity, a resistance;
(2) has better anti-high-frequency noise than discrete device system and antinoise signal is disturbed characteristic mutually;
(3) has better consistency than discrete device system;
(4) system is succinct, be convenient to produce in enormous quantities, and for ease of maintenaince;
(5) the amplifier tube drain current is adjustable;
(6) has the better protect function.
In general, the beneficial effects of the utility model are: this integrated circuit structure that has biasing and polarization selection function concurrently is simply compact, be easy to produce and safeguard, interference free performance is good, the operation stability height, with low cost, and long service life, be suitable for extensive use in such as the first-class equipment of satellite television high frequency.
Description of drawings
Below in conjunction with the drawings and the specific embodiments the technical solution of the utility model is described further.
Fig. 1 is the theory diagram that has the integrated circuit of biasing and polarization selection function concurrently;
Fig. 2 is the pin figure of integrated circuit shown in Figure 1 chip that forms after encapsulating.
Embodiment
Be a kind of integrated circuit that has biasing and polarization selection function concurrently as shown in Figure 1, it only is the preferred embodiment of the utility model, and only this embodiment only for the usefulness of explanation, is not subjected to the restriction of this structure in patent application.
This integrated circuit has 3 the tunnel and amplifies biasing and 2 tunnel polarization selections, and it comprises:
One reference voltage and current circuit 6;
One comparison circuit 2, it will be compared by reference voltage or the current signal that the polarization of satellite signal receiver 1 input selects signal and reference voltage and current circuit 6 to provide, and exports comparative result to control circuit 3;
First, second amplifier tube bias and protective circuit 8,9, it is connected to form horizontal polarization path and perpendicular polarization path with first, second amplifier tube of peripheral hardware respectively, also is connected with control circuit 3 respectively simultaneously;
The 3rd amplifier tube bias and protective circuit 10, it is connected with the 3rd amplifier tube of peripheral hardware;
Negative voltage generation circuit, it is connected with reference voltage and current circuit, in order to provide negative voltage to first, second, third amplifier tube bias and protective circuit;
Drain current adjustment circuit, it is connected with reference voltage and current circuit, in order to adjust respectively the drain current of transporting to first, second, third amplifier tube through first, second, third amplifier tube bias and protective circuit.
Further say, described negative voltage generation circuit comprises negative voltage generation module 5 and oscillator 4, described oscillator is connected with the negative voltage generation module with reference voltage and current circuit respectively, also connect a capacitor C 1 between its bipod simultaneously, described negative voltage generation module is through a capacitor C 2 ground connection, the oscillator signal that oscillator produces certain frequency is input to the negative voltage generation module, the negative voltage generation module produces negative voltage VSUB by the current potential at periodic change capacitor C 1 two ends, and capacitor C 2 is in order to eliminate the ripple on the negative voltage VSUB.
Described drain current adjustment circuit comprises drain current adjusting module 7; this drain current adjusting module is connected with first, second, third amplifier tube bias and protective circuit with reference voltage and current circuit respectively; and, can adjust the drain current that flows through first, second and third amplifier tube by the size of regulating resistance R 1 simultaneously through a variable resistor R1 ground connection.
Above-mentioned each amplifier tube bias and protective circuit are used under negative voltage generation module short circuit or overload situations, and when the drain current of external amplifier tube was no longer controlled, the drain electrode power supply then was turned off with the protection amplifier tube leakage current that do not exceeded the quata and damages.
This integrated circuit can adopt Bipolar integrated circuit production technology to make.
Be to adopt SOP14 integrated circuit packing forms as shown in Figure 2 with the above-mentioned formed chip in integrated circuit encapsulation back that has biasing and polarization selection function concurrently.
Each pin title, type and function etc. see following table for details shown in Fig. 1, Fig. 2:
| The pin position | | Type | Function | |
| 1 | VPOL | I | |
|
| 2 | RCAL | I/O | Outer meeting resistance is regulated the drain current that this outside resistance value can obtain mating to |
|
| 3 | VCC | | Chip power | |
| 4 | G1 | I/O | Connect the outside first |
|
| 5 | D1 | I/O | Connect outside first amplifier |
|
| 6 | G2 | I/O | Connect the outside second |
|
| 7 | D2 | I/O | Connect outside second amplifier |
|
| 8 | G3 | I/O | Connect outside the 3rd |
|
| 9 | D3 | I/O | Connect outside the 3rd amplifier |
|
| 10 | GND | GND | Chip ground | |
| 11 | N/C | N/C | |
|
| 12 | CNB1 | I/O | With the indirect electric capacity of |
|
| 13 | CNB2 | I/O | With the indirect electric capacity of |
|
| 14 | CSUB | I/O | The negative voltage port is with the indirect electric capacity of GND pin |
The course of work of this integrated circuit is: satellite receiver provides one tunnel polarization and selects signal, the reference voltage signal (or current signal) that this signal and reference voltage and current circuit produce outputs to control circuit through comparison circuit after relatively, control circuit is selected a kind of in the following two states according to the comparative result of input, promptly, first kind of state is that the first amplifier tube work, second amplifier tube are closed, second kind of state is that the second amplifier tube work, first amplifier tube are closed, but the arbitrary state in this two states, the 3rd amplifier tube is always worked.It is in running order that every kind of above-mentioned state is respectively applied for the road polarization path of selecting in horizontal polarization or the perpendicular polarization, and another road is in closed condition.
This have concurrently the biasing and the polarization selection function integrated circuit than the discrete device system have better anti-high-frequency noise, antinoise signal is disturbed characteristic and consistency mutually; the amplifier tube drain current is adjustable; has the better protect function; and required peripheral components is few; simple for structure; be convenient to assembling and safeguard, with low cost, be suitable for large-scale production.
The foregoing description only is explanation technical conceive of the present utility model and characteristics, and its purpose is to allow the personage who is familiar with this technology can understand content of the present utility model and enforcement according to this, can not limit protection range of the present utility model with this.All equivalences of being done according to the utility model spirit change or modify, and all should be encompassed within the protection range of the present utility model.
Claims (6)
1. one kind has biasing concurrently and the integrated circuit of the selection function that polarizes, and it is characterized in that: described integrated circuit comprises:
Reference voltage and current circuit;
Control circuit, it can be according to the reference voltage of being selected signal and reference voltage and current circuit to provide by the polarization of peripheral hardware signal receiver input or the comparative result of current signal, and it is in running order to choose one of a horizontal polarization path and a perpendicular polarization path;
First, second amplifier tube bias and protective circuit, it is connected to form horizontal polarization path and perpendicular polarization path with first, second amplifier tube of peripheral hardware respectively, also is connected with control circuit respectively simultaneously;
The 3rd amplifier tube bias and protective circuit, it is connected with the 3rd amplifier tube of peripheral hardware;
Negative voltage generation circuit, it is connected with reference voltage and current circuit, in order to provide negative voltage to first, second, third amplifier tube bias and protective circuit;
Drain current adjustment circuit, it is connected with reference voltage and current circuit, in order to adjust respectively the drain current of transporting to first, second, third amplifier tube through first, second, third amplifier tube bias and protective circuit.
2. the integrated circuit that has biasing and polarization selection function concurrently according to claim 1, it is characterized in that: described integrated circuit also comprises comparison circuit, to polarize reference voltage or the current signal of selecting signal and reference voltage and current circuit to provide of this comparison circuit compares, and exports comparative result to control circuit.
3. the integrated circuit that has biasing and polarization selection function concurrently according to claim 1, it is characterized in that: described negative voltage generation circuit comprises negative voltage generation module and oscillator, described oscillator is connected with the negative voltage generation module with reference voltage and current circuit respectively, also connects an electric capacity between its bipod simultaneously.
4. the integrated circuit that has biasing and polarization selection function concurrently according to claim 3, it is characterized in that: described negative voltage generation module is through a capacity earth.
5. the integrated circuit that has biasing and polarization selection function concurrently according to claim 1; it is characterized in that: described drain current adjustment circuit comprises the drain current adjusting module; this drain current adjusting module is connected with first, second, third amplifier tube bias and protective circuit with reference voltage and current circuit respectively, and simultaneously through a variable resistor ground connection.
6. the integrated circuit that has biasing and polarization selection function concurrently according to claim 1, it is characterized in that: described peripheral hardware signal receiver comprises other module except that described integrated circuit in satellite signal receiver and the tuner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202405813U CN201699849U (en) | 2010-06-29 | 2010-06-29 | Integrated circuit with bias and polarization choice function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202405813U CN201699849U (en) | 2010-06-29 | 2010-06-29 | Integrated circuit with bias and polarization choice function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201699849U true CN201699849U (en) | 2011-01-05 |
Family
ID=43401096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202405813U Expired - Lifetime CN201699849U (en) | 2010-06-29 | 2010-06-29 | Integrated circuit with bias and polarization choice function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201699849U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101895698A (en) * | 2010-06-29 | 2010-11-24 | 苏州市华芯微电子有限公司 | Integrated circuit with functions of bias and polarization selection |
| CN103297074A (en) * | 2013-03-18 | 2013-09-11 | 苏州华芯微电子股份有限公司 | Satellite receiver high-frequency special integrated circuit |
-
2010
- 2010-06-29 CN CN2010202405813U patent/CN201699849U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101895698A (en) * | 2010-06-29 | 2010-11-24 | 苏州市华芯微电子有限公司 | Integrated circuit with functions of bias and polarization selection |
| CN101895698B (en) * | 2010-06-29 | 2012-10-03 | 苏州华芯微电子股份有限公司 | Integrated circuit with functions of bias and polarization selection |
| CN103297074A (en) * | 2013-03-18 | 2013-09-11 | 苏州华芯微电子股份有限公司 | Satellite receiver high-frequency special integrated circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110105 Effective date of abandoning: 20121003 |