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DATA BRIEF
October 2004
SaTCR-1
Satellite channel router
Rev. 1
DESCRIPTION
Relaying satellite signals from the rooftop dish to
multiple receivers around the home, Digital Video
Recorders (DVR) or throughout an apartment
block is an expensive proposition for system
installers. The SaTCR-1 satellite channel router
addresses this problem by combining up to eight
input signals onto a single cable. These signals
are then decoded by a corresponding number of
tuners, potentially distributed across many set-top
boxes.
The SaTCR-1 device is intended for use in LNBs
or switchers in satellite receivers. The device shifts
the frequency of any input signal to a fixed
intermediate frequency. The output signal is band-
pass filtered generating a narrow band output.
By combining several SaTCR-1 devices, a
corresponding number of sub-bands may be
generated and multiplexed together.
This composite band can be made of different
independent channels issued from different LNB
inputs and polarizations, and can be carried on a
single coaxial cable.
Figure 1. Package: QFN36 (6 x 6 mm)
Figure 2. Single cable installation for multi-satellite receivers
xxxx
Basic satellite channel routing application
BPF
BPF
BPF
BPF
BPF
BPF
LO LO
X
X
X
X
PC
PC
Optional
legacy
output
Single
coaxial
cable
DVR Rx
ST7LNB1
SaTCR
SaTCR
4x2
or
4x3
matrix
C
hok
e
Ch
o
k
e
BPF
SATCR-1
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FEATURES
Wide input and wide output frequency ranges
(950 MHz to 2150 MHz)
Four programmable conversion gains
Fully integrated synthesizer
RF tone generator for installation loss
calibration and for system signalling
Programmable switch matrix control pins
System noise figure: 5 dB (typ.)
Single supply: 3.0 V
Low power consumption: 90 mA (typ.)
IC bus control
QFN36 package (6 x 6 mm)
APPLICATIONS
DDBS low-noise block converters
RF band translation switcher boxes
Reuse of terrestrial cable for satellite signals
Provides single-cable capability for:
DVR applications
multiple STBs/receivers
multi-switching for apartment blocks.
PART NUMBERING
Table 1. Order codes
REVISION HISTORY
Table 2. Revision history
Par t Number
Description
SaTCR-1
Satellite channel router
SaTCR-1 Eval
Evaluation board
Date
Revision
Description of Changes
October 2004
2
Updated diagram, history added, color removed, CCS template applied.
May 2004
1
Initial release
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