PE4274
Preliminary Specification
Table 5. Truth Table
V
DD
OFF
ON
ON
ON
ON
Notes:
1. The operation of the PE4274 is not supported or characterized in the C1 = High and C2 = High state.
C1
Low
Low
Low
High
High
C2
Low
Low
High
Low
High
RFC – RF1
ON
OFF
OFF
ON
N/A
1
RFC – RF2
OFF
OFF
ON
OFF
N/A
1
Figure 4. Typical Application Block Diagram
The PE4274 provides the high isolation
required by FCC part 15.115 regulation
between the television antenna and the cable
plant. The advantage of the PE4274 is that
device isolation / thru performance is
maintained when power is removed. This
Antenna Input
unique feature makes the PE4274 ideal for set-top
box and VCR applications.
The PE4274 supports signal flow from RFC to
RF1 and RF2 termination in the unpowered state;
similar to the powered state with C1=High,
C2=Low.
80dB 54 – 216MHz
60dB 216 – 550MHz
55dB 550 – 806MHz
PE4274
SPDT
DTV-Tuner
CATV Input
Antenna Input
Power
Splitter
Dual Tuner DTV / DVR / Set-top Box
PE4274
SPDT
DTV Tuner
80dB 54 – 216MHz
60dB 216 – 550MHz
55dB 550 – 806MHz
Power
Splitter
CATV Input
PE4274
SPDT
DTV-Tuner
Copyright © Peregrine Semiconductor Corp. 2005
Page 4 of 12
File No. 70/0185-01A
│
UltraCMOS™ RFIC Solutions
PEREGRINE [ PEREGRINE SEMICONDUCTOR CORP. ]
