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參數(shù)資料
| 型號： | ZNBG3116 |
| 廠商： | Zetex Semiconductor |
| 元件分類： | 圓形連接器 |
| 英文描述： | Circular Connector; MIL SPEC:MIL-DTL-38999 Series III; Body Material:Metal; Series:TVP00; Number of Contacts:42; Connector Shell Size:25; Connecting Termination:Crimp; Circular Shell Style:Wall Mount Receptacle; Body Style:Straight |
| 中文描述： | 場效應(yīng)管偏置控制器，偏振開關(guān)與音調(diào)檢測 |
| 文件頁數(shù)： | 7/14頁 |
| 文件大?。?/td> | 1845K |
| 代理商： | ZNBG3116 |
ZNBG3115
ZNBG3116
ISSUE 1 - JUNE 2001
7
FUNCTIONAL DIAGRAM
FUNCTIONAL DESCRIPTION
The ZNBG devices provide all the bias requirements for external FETs, including the generation of the negative
supply required for gate biasing, from the single supply voltage.The diagram above shows a single stage from
the ZNBG series. The ZNBG3115/16 contains 3 such stages. The negative rail generator is common to both
devices.
The drain voltage of the external FET Q
N
is set by the ZNBG device to its normal operating voltage. This is
determined by the on board V
D
Set reference, for the ZNBG3115 this is nominally 2.2 volts whilst the ZNBG3116
provides nominally 2 volts.
ThedraincurrenttakenbytheFETismonitoredbythelowvalueresistorIDSense.Theamplifierdrivingthegate
of the FET adjusts the gate voltage of Q
N
so that the drain current taken matches the current called for by an
external resistor R
CAL
.
SincetheFETisadepletionmodetransistor,itisoftennecessarytodriveitsgatenegativewithrespecttoground
to obtain the required drain current. To provide this capability powered from a single positive supply, the device
includes a low current negative supply generator. This generator uses an internal oscillator and two external
capacitors, C
NB
and C
SUB
.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ZNBG3211 | TV 30C 30MIX SKT WALL RECP |
| ZNBG3211Q20 | Circular Connector; MIL SPEC:MIL-DTL-38999 Series III; Body Material:Metal; Series:TVP00; No. of Contacts:24; Connector Shell Size:25; Connecting Termination:Crimp; Circular Shell Style:Wall Mount Receptacle; Body Style:Straight |
| ZNBG4000 | FET BIAS CONTROLLER |
| ZNBG4210Q24 | |
| ZNBG4001Q16 | FET BIAS CONTROLLER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ZNBG3116Q16 | 制造商:ZETEX 制造商全稱:ZETEX 功能描述:FET BIAS CONTROLLER WITH POLARISATION SWITCH AND TONE DETECTION |
| ZNBG3116Q16(1) | 制造商:ZETEX 制造商全稱:ZETEX 功能描述: |
| ZNBG3116Q20 | 制造商:ZETEX 制造商全稱:ZETEX 功能描述:FET BIAS CONTROLLER WITH POLARISATION SWITCH AND TONE DETECTION |
| ZNBG3116Q20(1) | 制造商:ZETEX 制造商全稱:ZETEX 功能描述: |
| ZNBG3118 | 制造商:DIODES 制造商全稱:Diodes Incorporated 功能描述:LNA GaAs FET BIAS CONTROLLER WITH POLARIZATION AND BAND SELECT |
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