Datasheet > ZNBG3010

ZNBG3010

更新时间： 2024-11-25 07:43:39

品牌	Logo	应用领域
美台 - DIODES		开关控制器
页数	文件大小	规格书
10页	380K
描述
FET BIAS CONTROLLER AND POLARITY SWITCH

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ZNBG3010 数据手册

FET BIAS CONTROLLER AND

POLARITY SWITCH

ISSUE 1 - FEBRUARY 1998

ZNBG3010

ZNBG3011

DEVICE DESCRIPTION

These devices are unconditionally stable

over the full working temperature with the

FETs in place, subject to the inclusion of the

recommended gate and drain capacitors.

These ensure RF stability and minimal

injected noise.

The ZNBG series of devices are designed to

meet the bias requirements of GaAs and

HEMT FETs commonly used in satellite

receiver LNBs, PMR cellular telephones etc.

with a minimum of external components.

It is possible to use less than the devices full

complement of FET bias controls, unused

drain and gate connections can be left open

circuit without affecting operation of the

remaining bias circuits.

With the addition of two capacitors and a

resistor, the devices provide drain voltage

and current control for three external

grounded source FETs, generating the

regulated negative rail required for FET gate

biasingwhilstoperatingfromasinglesupply.

This negative bias, at -3 volts, can also be

used to supply other external circuits.

In order to protect the external FETs the

circuits have been designed to ensure that,

under any conditions including power

up/down transients, the gate drive from the

bias circuits cannot exceed the range -3.5V

to 1V. Furthermore if the negative rail

experiences a fault condition, such as

overload or short circuit, the drain supply to

the FETs will shut down avoiding excessive

current flow.

The ZNBG3010/11 includes bias circuits to

drive up to three external FETs. A control

input to the device selects either one of two

FETs as operational, the third FET is

permanently active. This feature is

particularly used as an LNB polarisation

switch.

The ZNBG3010/11 are available in QSOP16

for the minimum in device size. Device

operating temperature is -40 to 70°C to suit

a wide range of environmental conditions.

Drain current setting of the ZNBG3010/11 is

user selectable over the range 0 to 15mA,

this is achieved with addition of a single

resistor. The series also offers the choice of

drain voltage to be set for the FETs, the

ZNBG3010 gives 2.2 volts drain whilst the

ZNBG3011 gives 2 volts.

FEATURES

APPLICATIONS

Provides bias for GaAs and HEMT FETs

Satellite receiver LNBs

•

Drives up to three FETs

Private mobile radio (PMR)

•

Dynamic FET protection

Cellular telephones

•

Drain current set by external resistor

•

Regulated negative rail generator

requires only 2 external capacitors

•

Choice in drain voltage

•

Wide supply voltage range

•

Polarisation switch for LNBs

•

QSOP surface mount package

4-114

12 3 4 5 6 7...10

中文翻译

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与ZNBG3010相关器件

型号	品牌	获取价格	描述	数据表
ZNBG3010Q16	ZETEX	获取价格	FET BIAS CONTROLLER AND POLARITY SWITCH
ZNBG3010Q16TC	ZETEX	获取价格	Analog Circuit, 1 Func, PDSO16, QSOP-16
ZNBG3011	ZETEX	获取价格	FET BIAS CONTROLLER AND POLARITY SWITCH
ZNBG3011	DIODES	获取价格	FET BIAS CONTROLLER AND POLARITY SWITCH
ZNBG3011Q16	ZETEX	获取价格	FET BIAS CONTROLLER AND POLARITY SWITCH
ZNBG3011Q16TA	ZETEX	获取价格	Analog Circuit, 1 Func, PDSO16, QSOP-16
ZNBG3110	ZETEX	获取价格	FET BIAS CONTROLLER WITH POLARISATION SWITCH AND TONE DETECTION
ZNBG3110Q20	ZETEX	获取价格	FET BIAS CONTROLLER WITH POLARISATION SWITCH AND TONE DETECTION
ZNBG3110Q20TA	DIODES	获取价格	Analog Circuit, 1 Func, PDSO20, QSOP-20
ZNBG3110Q20TC	ZETEX	获取价格	Analog Circuit, 1 Func, PDSO20, QSOP-20

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