ST SaTCR-1 User Manual
DESCRIPTION
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Relaying satellite signals from the rooftop di sh to
multiple receivers around the h ome, Digit al Video
Recorders (DVR) or throughout an apartment
block is an expensive proposition for system
installers. The SaTCR-1 satellite channel router
addresses this p roblem by com bining up to eight
input signals onto a singl e cable. These signals
are then decoded by a corresp onding number of
tuners, potentially distributed across many set-top
boxes.
The SaTCR-1 devi ce 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 bandpass 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
Figure 2. Single cable installation for mult i- satellite receivers
inputs and polarizations, and can be carried on a
single coaxial cable.
Figure 1. Package: QFN36 (6 x 6 mm)
Basic satellite channel routing application
BPF
BPF
LO
X
LO
X
4x2
or
4x3
matrix
SaTCR
®
BPF
SaTCR-1
Satellite channel router
DATA BRIEF
xxxx
Optional
legacy
output
Single
coaxia
Σ
cable
October 2004
BPF
BPF
BPF
PC
BPF
PC
ST7LNB1
Choke
Choke
®
DVR Rx
Rev. 1
1/2
X
X
SaTCR
SATCR-1
I
s
o
d
b
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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 lo ss
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.)
■ I²C bus control
■ QFN36 package (6 x 6 mm)
APPLICATIONS
■ DDBS low-noise block converters
■ RF band translation sw itcher 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
Part Number Descri ption
SaTCR-1 Satellite channel router
SaTCR-1 Eval Evaluation board
REVISION HISTORY
Table 2. Revision histo ry
Date Revision Description of Changes
October 2004 2 Updated diagram, history added, color removed, CCS template applied.
May 2004 1 Initial release
nformat i on furnish ed is bel ieved to be acc ur ate and relia bl e. How ev er , STM ic r oe lectroni c s ass um es no re sp ons ibilit y for the co nsequence
f use of such i nfo rmat ion no r fo r any inf ri ngem ent of paten ts o r othe r right s of third part ies whic h may res ult f rom it s use . No li cen se is gr ant e
y implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subje
o change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are n
uthorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics.
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