Press Center
 
Home About us Products Support Quality & Certification Career Contact us
• Power Management
    Linear Regulators
    Low Dropout Linear Regulators
    DDR Termination Regulators
    Shunt Reference Regulators
    Step Down Switching Regulators
    Switching Regulator
    Step-Up DC-DC Converter
    PWM Controller
    White LED Driver
    Supervisory Circuit
    Voltage Detection and System R
    USB Power Switch
    Power Factor Control
    Li-Battery Protection or Charg
    FET Bias Controllers
    Combo IC
    Inverting DC-DC Converter
• Amplifier / Comparator
    Audio Amplifiers
    Operational Amplifier
    Voltage Comparator
• Analog Switches
    Video Signal Switch
    Analog Multiplexers, Demultipl
• Hall ICs
• Special Application ICs
    Motor Controller IC
    Interface and Driver Circuit
    Telecommunication Circuit
    Melody IC
    Alarm /Sound Generator IC
    Remote Controller IC
    Television Circuit
    Leakage Current Detector
    Automotive IC
    A-D or D-A Converters
    Miscellaneous
    Radio and Cassette Recorder Ci
    Timer
    Mouse&Keyboard Controller
    Transient Voltage Suppressors
    Sense Monitor
    Video Filter
    ZCB snubber
• Logic
• TRANSISTORs
• MOSFETs
    JFET
    Power Mosfet
• TRIACs
• SCRs
• DIODEs
 
Home >
L8020 Datasheet
DUAL POLARISATION SWITCH TWIN LNB MULTIPLEX CONTROLLER 
 



DESCRIPTION
 
The UTC L8020 dual polarisation switch controller is one of a
wide range of satellite receiver LNB support circuits. Its features
include completely independent channels, and every channel
provides two logic outputs under the voltage sensitive input. The
two inputs of the UTC L8020 have a nominal threshold of 14.5V.
Their threshold is temperature compensated to minimize drift. In
order to achieve the transient protection by adding only a single
resistor per channel, each input has a low and stable input current. 
Normal and inverted outputs are provided for each input. All
outputs can source 15mA and sink 10mA making them suitable to
drive TTL and CMOS logic, pin diodes and for IF-amp supply switching.
The UTC L8020 works in a single supply ranging from 5V
to12V. The quiescent current of the UTC L8020 is 4mA, and there
is no remarkable change with load or logic state. In order to adapt
the variation of environmental conditions, the ambient operating temperature is -40°C~+85°C.
The UTC L8020 can be used in applications, such as IF switch
box, LNB switch boxes and twin LNBs, replacing many discrete
components to save both manufacturing cost and PCB size as well as improving reliability.    
 


 
FEATURES
 
* Avoid external components
* Provides polarity detection and control
* Transient resistant
* Low input and supply current
* Temperature compensated input threshold
* Normal and inverted output available while
wide supply operating range
* Dual polarisation switch
* Simplify the design
* Halogen Free
About us  |  Products  |  Contact us
Copyright 2011 UTC All received