Electronic Components Datasheet Search
  English  ▼

Delete All
ON OFF
ALLDATASHEET.COM

X  

Preview PDF Download HTML

ZNBG3010 Datasheet(PDF) 5 Page - Zetex Semiconductors

Part No. ZNBG3010
Description  FET BIAS CONTROLLER AND POLARITY SWITCH
Download  10 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Maker  ZETEX [Zetex Semiconductors]
Homepage  http://www.diodes.com/
Logo 

ZNBG3010 Datasheet(HTML) 5 Page - Zetex Semiconductors

 
Zoom Inzoom in Zoom Outzoom out
 5 / 10 page
background image
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 ZNBG3010/11 contains 3 such stages. The
negative rail generator is common to both devices.
The drain voltage of the external FET QN is set by the ZNBG device to its normal operating voltage.
This is determined by the on board VD Set reference, for the ZNBG3010 this is nominally 2.2 volts
whilst the ZNBG3011 provides nominally 2 volts.
The drain current taken by the FET is monitored by the low value resistor ID Sense. The amplifier
driving the gate of the FET adjusts the gate voltage of QN so that the drain current taken matches
the current called for by an external resistor RCAL.
Since the FET is a depletion mode transistor, it is often 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, CNB and CSUB.
ZNBG3010
ZNBG3011
4-118


Html Pages

1  2  3  4  5  6  7  8  9  10 


Datasheet Download




Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ]  

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Alldatasheet API   |   Link Exchange   |   Manufacturer List
All Rights Reserved© Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn