UNISONIC TECHNOLOGIES CO., LTD

L8312

Preliminary

LINEAR INTEGRATED CIRCUIT

www.unisonic.com.tw

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Copyright © 2010 Unisonic Technologies Co., Ltd

QW-R123-016.a

DUAL POLARIZATION AND

TONE SWITCH CONTROLLER

DESCRIPTION

The UTC L8312 is specially designed integrated circuit for

control satellite receiver front-end block switch and provides

customers with dual independent channel of two-control signal:

polarization and tone switch controller for LNB switch signal path

selection.

The UTC L8312 is characterized by its two independent

channels and each provides logical outputs to show status of LNB

switch polarization selection and 22 KHz tone signal.

Minimum number of external discrete components and the wide

range of supply voltage make this device suitable in Twin, Quad and

multiple feed universal LNB switch to get lower cost and minimum

PCB size.

In order to satisfy the special LNB switch model, a tighter

specification has been taken into consideration for the polarization

switch characteristics. The number of external components is also

reduced. The UTC L8312 includes separate 22K tone detection for

each channel. In addition, the built-in tone amplifier circuit is

designed to protect transient signal by an external resistor and

capacitor simply, and it also provides good bandwidth and

sensitivity.

The UTC L8312 is generally applied in multi output LNB and

multi switch.

FEATURES

* Direct Drive PIN Diode and Multiplexer IC.

* High Supply Voltage

ORDERING INFORMATION

Ordering Number

Lead Free

Halogen Free

Package

Packing

L8312L-R16-R

L8312G-R16-R

SSOP-16

Tape Reel