CN206178786U - Be applied to radio -frequency signal source's USB drive circuit - Google Patents
Be applied to radio -frequency signal source's USB drive circuit Download PDFInfo
- Publication number
- CN206178786U CN206178786U CN201621217282.1U CN201621217282U CN206178786U CN 206178786 U CN206178786 U CN 206178786U CN 201621217282 U CN201621217282 U CN 201621217282U CN 206178786 U CN206178786 U CN 206178786U
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- CN
- China
- Prior art keywords
- control chip
- drive control
- resistance
- usb
- pl2303hx
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Abstract
The utility model discloses a be applied to radio -frequency signal source's USB drive circuit, including drive control chip PL2303HX, USB joint, emitting diode LED, resistance R1, resistance R2, resistance R3, resistance R4, the power pin VCC of resistance R4's one end and USB joint is connected, and its other end is connected with emitting diode LED's positive pole, emitting diode's cathode grounded, the anodal D+ of data line that resistance R2's one end and USB connect is connected, and its other end is connected with drive control chip PL2303HX's DP pin, the data line negative pole D that resistance R3 one end and USB connect connect, its other end is connected with drive control chip PL2303HX's DM pin, the anodal D+ of data line that resistance R1's one end and USB connect is connected, and its other end is connected with drive control chip PL2303HX's VO pin. The utility model discloses depend on drive control chip PL2303HX and peripheral circuit, make USB interface can establish ties 5 equipment and job stabilization, can effectively promote the transmission speed and the transmission efficiency of data, can stabilize the working property that promote radio -frequency signal source simultaneously.
Description
Technical field
This utility model is related to a kind of drive circuit, and in particular to be applied to the USB drive circuits of radio-frequency signal source.
Background technology
In radio-frequency signal source, frequency synthesis technique often applies indirect synthesis technique, by phase-locked loop by the frequency of main vibration source
Connect with the frequency of reference frequency source, necessary hardware equipment is few, reliability is high, wide frequency range.Loop filter is tool
There is the low pass filter of certain gain, phase demodulation frequency and its harmonic wave can be filtered, to obtain tuning oscillator output frequencies most
Good phase noise.Radio-frequency signal source needs stable work just using USB interface and extraneous exchange data, its USB drive circuit
Can guarantee that the steady operation of signal source, although USB interface of the prior art can realize that in theory the tandem of 127 equipment connects
Connect, but 3 to 4 equipment of connecting during practical application are possible to failure.
Utility model content
Technical problem to be solved in the utility model be USB interface in actual applications can only 3 to 4 equipment of tandem and
Job insecurity after tandem, it is therefore intended that offer is applied to the USB drive circuits of radio-frequency signal source, enables USB interface to connect 5
Individual equipment and working stability, can stably lift the service behaviour of radio-frequency signal source.
This utility model is achieved through the following technical solutions：
Be applied to the USB drive circuits of radio-frequency signal source, including drive control chip PL2303HX, USB joint, luminous two
Pole pipe LED, resistance R1, resistance R2, resistance R3, resistance R4, one end of the resistance R4 connects with power pins VCC of USB joint
Connect, its other end is connected with the anode of LED, the minus earth of light emitting diode；One end of the resistance R2 with
The data wire positive pole D+ connections of USB joint, its other end is connected with the DP pins of drive control chip PL2303HX；The resistance
R3 one end is connected with the data wire negative pole D- of USB joint, and its other end is connected with the DM pins of drive control chip PL2303HX；
One end of the resistance R1 is connected with the data wire positive pole D+ of USB joint, and its other end is with drive control chip PL2303HX's
VO pins connect；The data wire positive pole D+ and data wire negative pole D- of the USB joint is used for the transmission of data, the data transmitted
Interact with storage device through the data receiver pin RXD and data is activation pin TXD of drive control chip PL2303HX.
Using drive control chip PL2303HX, full duplex asynchronous serial communication device can be provided and be coupled with USB functional interfaces facility, and
The chip can realize that USB turns serial ports, and the extension for radio-frequency signal source provides advantage.Meanwhile, using drive control chip
PL2303HX can effectively strengthen the tandem function of USB.
Further, the USB drive circuits of radio-frequency signal source are applied to, also including electrochemical capacitor C1 and electrochemical capacitor C6,
The electrochemical capacitor C1 positive terminals are connected and connect positive 5V power supplys with power pins VCC of USB joint, its negative pole end ground connection；It is described
Electrochemical capacitor C6 positive terminals are connected and connect 3.3V power supplys, its negative pole end and driving with the VO pins of drive control chip PL2303HX
The GND pin connection of control chip PL2303HX and ground connection.There is electrochemical capacitor stopping direct current, bypass, coupling, filtering, temperature to mend
The function such as repay, tune, the effect of electrochemical capacitor C1 and electrochemical capacitor C6 is stopping direct current, filtering.
Further, the USB drive circuits of radio-frequency signal source are applied to, also including crystal oscillator X1, electric capacity C8, electric capacity C9, institute
State crystal oscillator X1 one end to be connected with the OSC1 pins of drive control chip PL2303HX, its other end and drive control chip
The OSC2 pins connection of PL2303HX, described electric capacity C8 one end is connected with the OSC1 pins of drive control chip PL2303HX, its
The other end is grounded, and described electric capacity C9 one end is connected with the OSC2 pins of drive control chip PL2303HX, its other end ground connection.It is brilliant
Shake X1 and provide stable clock signal for drive control chip PL2303HX, make the work that drive circuit is more stable.
This utility model compared with prior art, has the following advantages and advantages：This utility model depends on drive
Dynamic control chip PL2303HX and peripheral circuit, enable USB interface to connect 5 equipment and working stability, can effectively lift number
According to transmission speed and efficiency of transmission, while the service behaviour of radio-frequency signal source can be lifted stably.
Description of the drawings
Accompanying drawing described herein is used for providing further understanding this utility model embodiment, constitutes the one of the application
Part, does not constitute the restriction to this utility model embodiment.In the accompanying drawings：
Fig. 1 is this utility model structural representation.
Specific embodiment
To make the purpose of this utility model, technical scheme and advantage become more apparent, with reference to embodiment and accompanying drawing,
The utility model is described in further detail, and exemplary embodiment of the present utility model and its explanation are only used for explaining this
Utility model, is not intended as to restriction of the present utility model.
Embodiment
As shown in figure 1, the USB drive circuits of radio-frequency signal source are applied to, including drive control chip PL2303HX, USB
Joint, LED, resistance R1, resistance R2, resistance R3, resistance R4, one end of the resistance R4 and the electricity of USB joint
Source pin VCC connects, and its other end is connected with the anode of LED, the minus earth of light emitting diode；The resistance
One end of R2 is connected with the data wire positive pole D+ of USB joint, and its other end connects with the DP pins of drive control chip PL2303HX
Connect；Described resistance R3 one end is connected with the data wire negative pole D- of USB joint, and its other end is with drive control chip PL2303HX's
DM pins connect；One end of the resistance R1 is connected with the data wire positive pole D+ of USB joint, its other end and drive control chip
The VO pins connection of PL2303HX；The data wire positive pole D+ and data wire negative pole D- of the USB joint is used for the transmission of data, institute
The data of transmission set through the data receiver pin RXD and data is activation pin TXD of drive control chip PL2303HX with storage
It is standby to interact.Power pins VCC of electrochemical capacitor C1 and electrochemical capacitor C6, the electrochemical capacitor C1 positive terminals and USB joint
Connect and connect positive 5V power supplys, its negative pole end ground connection；The VO of the electrochemical capacitor C6 positive terminals and drive control chip PL2303HX
Pin connects and connects 3.3V power supplys, and its negative pole end is connected and is grounded with the GND pin of drive control chip PL2303HX.Crystal oscillator
X1, electric capacity C8, electric capacity C9, described crystal oscillator X1 one end is connected with the OSC1 pins of drive control chip PL2303HX, its other end
It is connected with the OSC2 pins of drive control chip PL2303HX, described electric capacity C8 one end is with drive control chip PL2303HX's
OSC1 pins connect, and its other end ground connection, described electric capacity C9 one end is connected with the OSC2 pins of drive control chip PL2303HX,
Its other end ground connection.
After USB joint is connected with equipment, equipment is detected and is attached, and the DM of drive control chip PL2303HX draws
Foot and DP pins can at full speed send the SOF bags at 1ms intervals or the SOF bags at 125us intervals.When the equipment that USB joint is connected is needed
Data are input into, drive control chip PL2303HX will control RXD pin receiving datas, through drive control chip
The process of PL2303HX transfers data to USB joint, by data output；When the equipment of USB joint connection needs output data
When, data are input into data through USB joint, and data transfer is to drive control chip PL2303HX, drive control chip
PL2303HX will control TXD pins and data is activation is gone out.
The specification of the components and parts used in the present embodiment is as follows：Resistance R1-1.5K ohms；Resistance R2-27 ohms；Resistance
R3-27 ohms；Resistance R4-470 ohms；Electrochemical capacitor C1-220uF；Electric capacity C8-22pF；Electric capacity C9-22pF；Electrochemical capacitor
C6-10uF；Electric capacity C7-0.1uF；Crystal oscillator X1-12MHz.
Above-described specific embodiment, is entered to the purpose of this utility model, technical scheme and beneficial effect
One step is described in detail, be should be understood that and be the foregoing is only specific embodiment of the present utility model, is not used to limit
Fixed protection domain of the present utility model, all any modifications within spirit of the present utility model and principle, made, equivalent are replaced
Change, improve, should be included within protection domain of the present utility model.
Claims (3)
1. the USB drive circuits of radio-frequency signal source are applied to, it is characterised in that connect including drive control chip PL2303HX, USB
Head, LED, resistance R1, resistance R2, resistance R3, resistance R4, one end of the resistance R4 and the power supply of USB joint
Pin VCC connects, and its other end is connected with the anode of LED, the minus earth of light emitting diode；The resistance R2
One end be connected with the data wire positive pole D+ of USB joint, its other end is connected with the DP pins of drive control chip PL2303HX；
Described resistance R3 one end is connected with the data wire negative pole D- of USB joint, the DM of its other end and drive control chip PL2303HX
Pin connects；One end of the resistance R1 is connected with the data wire positive pole D+ of USB joint, its other end and drive control chip
The VO pins connection of PL2303HX；The data wire positive pole D+ and data wire negative pole D- of the USB joint is used for the transmission of data, institute
The data of transmission set through the data receiver pin RXD and data is activation pin TXD of drive control chip PL2303HX with storage
It is standby to interact.
2. USB drive circuits for being applied to radio-frequency signal source according to claim 1, it is characterised in that also including electrolysis
Electric capacity C1 and electrochemical capacitor C6, the electrochemical capacitor C1 positive terminals are connected with power pins VCC of USB joint and to meet positive 5V electric
Source, its negative pole end ground connection；The electrochemical capacitor C6 positive terminals are connected and connect with the VO pins of drive control chip PL2303HX
3.3V power supplys, its negative pole end is connected and is grounded with the GND pin of drive control chip PL2303HX.
3. USB drive circuits for being applied to radio-frequency signal source according to claim 1, it is characterised in that also including crystal oscillator
X1, electric capacity C8, electric capacity C9, described crystal oscillator X1 one end is connected with the OSC1 pins of drive control chip PL2303HX, its other end
It is connected with the OSC2 pins of drive control chip PL2303HX, described electric capacity C8 one end is with drive control chip PL2303HX's
OSC1 pins connect, and its other end ground connection, described electric capacity C9 one end is connected with the OSC2 pins of drive control chip PL2303HX,
Its other end ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621217282.1U CN206178786U (en) | 2016-11-11 | 2016-11-11 | Be applied to radio -frequency signal source's USB drive circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621217282.1U CN206178786U (en) | 2016-11-11 | 2016-11-11 | Be applied to radio -frequency signal source's USB drive circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206178786U true CN206178786U (en) | 2017-05-17 |
Family
ID=58684291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621217282.1U Expired - Fee Related CN206178786U (en) | 2016-11-11 | 2016-11-11 | Be applied to radio -frequency signal source's USB drive circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206178786U (en) |
-
2016
- 2016-11-11 CN CN201621217282.1U patent/CN206178786U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20170517 Termination date: 20171111 |