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參數(shù)資料
| 型號： | ZNBG2001 |
| 廠商： | Zetex Semiconductor |
| 英文描述： | FET BIAS CONTROLLER |
| 中文描述： | 場效應(yīng)管偏置控制器 |
| 文件頁數(shù)： | 4/7頁 |
| 文件大?。?/td> | 514K |
| 代理商： | ZNBG2001 |
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 ZNBG2000/1 contains 2 such
stages.
The drain voltage of the external FET Q
is set by the
ZNBG device to its normal operating voltage. This is
determined by the on board V
Set reference, for the
ZNBG2000 this is nominally 2.2 volts whilst the
ZNBG2001 provides nominally 2 volts.
The drain current taken by the FET is monitored by
the low value resistor I
Sense. The amplifier driving
the gate 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
. Both ZNBG
devices have the facility to program different drain
currents into selected FETs.
Since the FET is a depletion mode transistor, it is
usually necessary to drive its gate negative with
respect to ground 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
.
ISSUE 1 - AUGUST 2001
4
ZNBG2000
ZNBG2001
FUNCTIONAL DIAGRAM
7
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ZNBG3000 | Circular Connector; MIL SPEC:MIL-DTL-38999 Series III; Body Material:Metal; Series:TVP00; No. of Contacts:55; Connector Shell Size:23; Connecting Termination:Crimp; Circular Shell Style:Wall Mount Receptacle; Body Style:Straight |
| ZNBG3001Q16 | FET BIAS CONTROLLER |
| ZNBG3000Q16 | TV 6C 6#8(TWINAX) PIN RECP |
| ZNBG3001 | TV 6C 6#8(TWINAX) PIN RECP |
| ZNBG3010 | TV 6C 6#8(TWINAX) SKT RECP |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ZNBG2001X10 | 制造商:ZETEX 制造商全稱:ZETEX 功能描述:FET BIAS CONTROLLER |
| ZNBG3000 | 制造商:ZETEX 制造商全稱:ZETEX 功能描述:FET BIAS CONTROLLER |
| ZNBG3000Q16 | 制造商:ZETEX 制造商全稱:ZETEX 功能描述:FET BIAS CONTROLLER |
| ZNBG3000Q16TC | 功能描述:MOSFET 3BIAS GENERATOR 2.2V RoHS:否 制造商:STMicroelectronics 晶體管極性:N-Channel 汲極/源極擊穿電壓:650 V 閘/源擊穿電壓:25 V 漏極連續(xù)電流:130 A 電阻汲極/源極 RDS（導(dǎo)通）:0.014 Ohms 配置:Single 最大工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:Max247 封裝:Tube |
| ZNBG3001 | 制造商:DIODES 制造商全稱:Diodes Incorporated 功能描述:FET BIAS CONTROLLER |
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