oscillator is factory trimmed within a tolerance of

±2KHz, thus no further adjustments neither

external components are required.

A burst coding of the 22KHz tone can be

accomplished thanks to the fast response of the

ENT input and the prompt oscillator start-up. This

helps designers who want to implement the

DiSEqC

™ protocols (*).

In order to improve design flexibility and to allow

implementation

of

newcoming

LNB

remote

control standards, an analogic modulation input

pin is available (EXTM). An appropriate DC

blocking capacitor must be used to couple the

modulating signal source to the EXTM pin. When

external modulation is not used, the relevant pin

can be left open.

Two pins are dedicated to the overcurrent

protection/monitoring: CEXT

and

OLF.

The

overcurrent protection circuit works dynamically:

as soon as an overload is detected in either LNB

output, the output is shut-down for a time Toff

determined by the capacitor connected between

CEXT and GND. Simultaneously the OLF pin,

that is an open collector diagnostic output flag,

from HIGH IMPEDANCE state goes LOW. After

the time has elapsed, the output is resumed for a

IMPEDANCE. If the overload is still present, the

value is 1200ms when a 4.7

µF external capacitor

is used.

This dynamic operation can greatly reduce the

power dissipation in short circuit condition, still

ensuring excellent power-on start up even with

highly capacitive loads on LNB outputs.

The device is packaged in Multiwatt15 for

thru-holes mounting and in PowerSO-20 for

surface mounting. When a limited functionality in

a smaller package matches design needs, a

range of cost-effective PowerSO-10 solutions is

also offered. All versions have built-in thermal

protection against overheatingdamage.

(*): External components are needed to comply to level 2.x and above (bidirectional) DiSEqC

™ bus hardware requirements. DiSEqC™ is

a trademark of EUTELSAT.

ORDERING NUMBERS

Type

Multiwatt-15

PowerSO-20

PowerSO-10

LNBK10

LNBK11

LNBK12

LNBK13

LNBK14

LNBK15

LNBK16

LNBK20

LNBK20CR (*)

LNBK20PD

LNBK10SP (*)

LNBK11SP (*)

LNBK12SP (*)

LNBK13SP (*)

LNBK14SP (*)

LNBK15SP (*)

LNBK16SP (*)

PIN CONFIGURATIONS

Multiwatt-15

PowerSO-20

PowerSO-10

(*) Available on request

LNBK10 SERIES - LNBK20

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