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參數(shù)資料
| 型號： | ZNBG3116Q16(1) |
| 廠商： | Zetex Semiconductor |
| 文件頁數(shù)： | 1/14頁 |
| 文件大?。?/td> | 1845K |
| 代理商： | ZNBG3116Q16(1) |
1
FET BIAS CONTROLLER WITH POLARISATION
SWITCH AND TONE DETECTION
ISSUE 1 - JUNE 2001
DEVICE DESCRIPTION
TheZNBGseriesofdevicesaredesignedtomeetthe
bias requirements of GaAs and HEMT FETs
commonly used in satellite receiver LNBs, PMR,
cellular telephones etc. with a minimum of external
components.
ZNBG3115
ZNBG3116
ISSUE 1 - JUNE 2001
Withtheadditionoftwocapacitorsandaresistorthe
devicesprovidedrainvoltageandcurrentcontrolfor
three external grounded source FETs, generating
the regulated negative rail required for FET gate
biasing whilst operating from a single supply. This
negative bias, at -2.8 volts, can also be used to
supply other external circuits.
The ZNBG3115/16 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
normally used as an LNB polarisation switch. Also
specific to Universal LNB applications is the 22kHz
tone detection and logic output feature which is
used to enable high and low band frequency
switching.
The ZNBG3115/16 has been designed to cope with
DiSEqC ready set top boxes and rejects all
transients from channel switching.
Drain current setting of the ZNBG3115/16 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
3115gives2.2voltsdrainwhilstthe3116gives2volts.
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.
It is possible to use less than the devices full
complementofFETbiascontrols,unuseddrainandgate
connections can be left open circuit without affecting
operation of the remaining bias circuits.
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.
Additionally each stage has its own individual current
limiter. 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 ZNBG3115/16 are available in QSOP16 and QSOP20
for the minimum in device size. Device operating
temperature is -40 to 80°C to suit a wide range of
environmental conditions.
FEATURES
Provides bias for GaAs and HEMT FETs
Drives up to three FETs
Dynamic FET protection
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
22kHz tone detection for band switching
Tone detector ignores unwanted signals
Support fr MIMIC, FET and Bipolar local
oscillator devices
Compliant with ASTRA control specifications
QSOP 16 and 20 surface mount packages
APPLICATIONS
Satellite receiver LNBs
Private mobile radio (PMR)
Cellular telephones
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ZNBG3116Q20(1) | |
| ZNBG3115Q16 | Circular Connector; MIL SPEC:MIL-DTL-38999 Series III; Body Material:Metal; Series:TVP00; No. of Contacts:42; Connector Shell Size:25; Connecting Termination:Crimp; Circular Shell Style:Wall Mount Receptacle; Body Style:Straight |
| ZNBG3115Q20 | 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 |
| ZNBG3116 | 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 |
| ZNBG3211 | TV 30C 30MIX SKT WALL RECP |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)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 |
| ZNBG3118JA16TC | 功能描述:線性穩(wěn)壓器 - 標準 LNA GaAs FET BIAS Polarized Band CNTRL RoHS:否 制造商:STMicroelectronics 輸出類型: 極性: 輸出電壓:1.8 V 輸出電流:150 mA 負載調(diào)節(jié): 最大輸入電壓:5.5 V 線路調(diào)整率: 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:SOT-323-5L |
| ZNBG3210 | 制造商:DIODES 制造商全稱:Diodes Incorporated 功能描述:FET BIAS CONTROLLER WITH POLARISATION |
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