SaTCR-1
Satellite channel router
DATA BRIEF
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)
xxxx
Figure 2. Single cable installation for multi-satellite receivers
Basic satellite channel routing application
Optional
legacy
output
BPF
BPF
X
X
BPF
4x2
or
4x3
matrix
®
SaTCR
LO LO
Σ
®
Single
coaxial
cable
Choke
Choke
BPF
BPF
X
X
BPF
SaTCR
PC
PC
®
DVR Rx
ST7LNB1
Rev. 1
October 2004
1/2
SATCR-1
FEATURES
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Wide input and wide output frequency ranges
(950 MHz to 2150 MHz)
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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.
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.)
I²C bus control
QFN36 package (6 x 6 mm)
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PART NUMBERING
Table 1. Order codes
Part Number
SaTCR-1
SaTCR-1 Eval
Satellite channel router
Evaluation board
Description
REVISION HISTORY
Table 2. Revision history
Date
October 2004
May 2004
2
1
Revision
Description of Changes
Updated diagram, history added, color removed, CCS template applied.
Initial release
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences
of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted
by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject
to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not
authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics.
The ST logo is a registered trademark of STMicroelectronics.
All other names are the property of their respective owners
© 2004 STMicroelectronics - All rights reserved
STMicroelectronics group of companies
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Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America
www.st.com
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