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ZNBG3114Q20 PDF预览

ZNBG3114Q20

更新时间： 2024-09-14 22:06:51
品牌 Logo 应用领域
捷特科 - ZETEX 模拟IC开关信号电路光电二极管控制器
页数 文件大小 规格书
17页 687K
描述
FET BIAS CONTROLLER WITH POLARISATION SWITCH AND TONE DETECTION

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中文翻译

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ZNBG3114Q20 技术参数

是否Rohs认证： 不符合生命周期：Transferred
包装说明：QSOP-20Reach Compliance Code：unknown
HTS代码：8542.39.00.01风险等级：5.1
Is Samacsys：N模拟集成电路 - 其他类型：ANALOG CIRCUIT
JESD-30 代码：R-PDSO-G20JESD-609代码：e0
长度：8.65 mm湿度敏感等级：1
标称负供电电压 (Vsup)：-3 V功能数量：1
端子数量：20封装主体材料：PLASTIC/EPOXY
封装代码：SSOP封装形状：RECTANGULAR
封装形式：SMALL OUTLINE, SHRINK PITCH峰值回流温度（摄氏度）：NOT SPECIFIED
认证状态：Not Qualified座面最大高度：1.75 mm
最大供电电压 (Vsup)：10 V最小供电电压 (Vsup)：5 V
表面贴装：YES端子面层：Tin/Lead (Sn/Pb)
端子形式：GULL WING端子节距：0.635 mm
端子位置：DUAL处于峰值回流温度下的最长时间：NOT SPECIFIED
宽度：3.9116 mmBase Number Matches：1

ZNBG3114Q20 数据手册

 浏览型号ZNBG3114Q20的Datasheet PDF文件第2页浏览型号ZNBG3114Q20的Datasheet PDF文件第3页浏览型号ZNBG3114Q20的Datasheet PDF文件第4页浏览型号ZNBG3114Q20的Datasheet PDF文件第5页浏览型号ZNBG3114Q20的Datasheet PDF文件第6页浏览型号ZNBG3114Q20的Datasheet PDF文件第7页 
FET BIAS CONTROLLER WITH POLARISATION  
SWITCH AND TONE DETECTION  
ISSUE 1 - OCTOBER 1998  
ZNBG3113  
ZNBG3114  
DEVICE DESCRIPTION  
Drain current setting of the ZNBG3113/14 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 3113 gives  
2.2 volts drain whilst the 3114 gives 2 volts.  
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.  
With the addition of two capacitors and a  
resistorthedevicesprovide drainvoltageand  
current control for 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 -3 volts, can also be used to  
supply other external circuits.  
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  
complement of FET bias controls, unused  
drain and gate connections can be left open  
circuit without affecting operation of the  
remaining bias circuits.  
The ZNBG3113/14 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. Also specific to LNB applications is  
the 22kHz tone detection and logic output  
feature which is used to enable high and low  
band frequency switching.  
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 facility to control the tone switching  
delay is provided. This allows the rejection  
of other lower frequency tones tat may be  
present in multiple LNB applications.  
The ZNBG3113/14 are available in QSOP20  
for the minimum in device size. Device  
operating temperature is -40 to 70°C to suit  
a wide range of environmental conditions.  
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  
•
•
22KHz tone detection for band  
switching  
Programmable tone delay  
•
•
Compliant with ASTRA control  
specifications  
QSOP surface mount package  
•
4-123  
1234567...17

中文翻译

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