SP42742 Datasheet, PDF (4/10 Pages) SIPAT Co,Ltd – 75  Terminated, 5 - 2200 MHz SPDT

SP42742
Product Specification
Table 7. Truth Table
V_DD C1 (pin 17) C2 (pin 16) RFC – RF1 RFC – RF2
OFF
Low
Low
ON
OFF
ON
Low
Low
ON
OFF
ON
Low
High
OFF
ON
ON
High
Low
OFF
ON
ON
High
High
ON
OFF
Note: A versatile logic table has been established to allow either C1 or C2
act as a single pin control and in either polarity.
Figure 4. Typical Application (1 of 4)
Antenna Input
Typical Applications
The SP42742 provides the high isolation required
by FCC part 15.115 regulation between the
television antenna and the cable plant. The
advantage of the SP42742 is that device
isolation / thru performance is maintained when
power is removed. This unique feature makes the
SP42742 ideal for set-top box and VCR
applications. The SP42742 supports signal flow
from RFC to RF1 and RF2 termination in the
unpowered state; similar to the powered state with
C1=C2 (both high or low).
80dB 54 – 216M Hz
60dB 216 – 550M Hz
55dB 550 – 806M Hz
SP42742
SPDT
DTV-Tuner
CATV Input
Figure 5. Typical Application (2 of 4)
TV Set / Cable Set-top Box
SP42742 SPDT
CATV Input
75Ω
Tuner
OFF – Terminated
Figure 6. Typical Application (3 of 4)
Antenna Input
Dual Tuner DTV / DVR / Set-top Box
80dB 54 – 216MHz
60dB 216 – 550MHz
55dB 550 – 806MHz
CATV Input
Power
Splitter
Power
Splitter
SP42742
SPDT
SP42742
SPDT
DTV Tuner
DTV-Tuner
Figure 7. Typical Application (4 of 4)
PVR/VCR/Game Box
Antenna/Cable
Input
RF
Splitter
Tuner/
Modulator
SP42742
SPDT
Television
Tel: [phone]
Page 4 of 10
OFF – Pass Through
Fax: [phone] www.sipatsaw.com / [e-mail]