5-Way Active Splitter with One-Port Bypass
50 MHz to 1000 MHz
FeAtUreS
• Single Input, 5-way Output
• Wideband Operation: to Above 1 GHz
• Maintains RF signal path to high priority port
(“Phone”) in power loss mode
• Used in conjunction with external FET for
shutdown control
• 4.8 dB Typical Noise Figure at 4 dB Gain
• Single +3.3 V Supply
• High Linearity, Low Distortion
• Single-ended 75 Ohm Inputs/Outputs
• RoHS Compliant/Lead Free
• 4 x 4 x 0.9 mm 24-Lead QFN Package
APS3625
PreliminAry DAtA Sheet - rev 1.1
APS
362
5
• Home gateways and CATV digital set-top boxes
with multiple tuners, requiring phone by-
pass when power is lost
APPlicAtionS
S34 Package
24 Pin QFn
4 mm x 4 mm x 0.9 mm
is intended for critical signals such as a digital voice
phone. The overall linearity of each tuner path is
maintained across the entire operating frequency
range, ensuring low distortion effects on each output
signal.
Requiring a single +3.3 Volt supply, the active splitter
design is implemented using the ANADIGICS GaAs
MESFET process. The small surface mount QFN
packaging makes this device ideal for use in home
gateways and multiple-tuner set-top boxes, supporting
multiple video outputs, and/or DOCSIS 3.0 and IP
phones.
Shutdown
Control “OFF”
ProDUct DeScriPtion
The APS3625 active splitter from ANADIGICS accepts
an RF input in the 50 MHz to 1.0 GHz frequency range
and provides five RF outputs with minimal degradation
in signal quality. The single-package surface mount
device amplifies the input signals using highly linear,
low noise amplification stages, and couples the
amplified signal to five separate output paths to drive
video tuner(s), a DOCSIS tuner(s), or other in-band
inputs. The device provides one by-pass output to
maintain a connection when the power is lost, which
Shutdown
Control “ON”
RF Out 1
RF Out 2
RF Out 3
RF Input
RF Out 4
RF Out 1
RF Out 2
RF Out 3
RF Input
RF Out 4
Figure 1: Functional Block Diagram “on” mode
RF Out 5
(Phone Out)
APS3625
RF Out 5
(Phone Out)
APS3625
Figure 2: Functional Block Diagram Bypass mode
07/2010
ANADIGICS [ ANADIGICS, INC ]
