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SL1914

Preliminary Information

SL1914

Satellite Tuner Front End LNA with AGC

Preliminary Information

DS5137

ISSUE 1.6

April 1999

Ordering Information

SL1914A/KG/MP1S

SL1914A/KG/MP1T

Description

The SL1914 is a wideband LNA with AGC designed

primarily for application in satellite tuner front ends,

offering high signal handling capability with low noise

figure compatible with most common tuner input

requirements.

The SL1914 is optimised to complement the SL1925,

ZIF quadrature downconverter, integrating all the active

RF circuitry within the tuner, in a highly compact, efficient

solution, and offering a full 1-45 MS/s tuner capability.

Features

q

Single chip solution for satellite tuner LNA and

AGC

q

Provides for 30 dB minimum AGC

q

Low DSB NF at maximum gain

q

High signal handling at minimum gain

q

Provides differential output drive

q

ESD protection (Normal ESD handling

procedures should be observed)

Applications

q

Satellite receiver systems

q

Data communications systems

q

Master Antennae Distribution Systems

Figure 1 Block Diagram

RF INPUT

AGC

OUTPUT

OUTPUTB

Vcca

Vccb

Vee

2

4

6

5

1

8

3