AdvAnced Product informAtion - rev 0.4
• Single Input, Triple Output Design
• High Linearity, Low Distortion Outputs Support
Video Tuner Applications
• Wideband Operation: To Above 1 GHz
• 4.5 dB Typical Noise Figure at 3.5 dB Gain
• Extended Dynamic Range Gain Control,
Independent for each RF path
• Single +5 V Supply
• Balanced 75 Ohm Inputs/Outputs
• RoHS Compliant/Lead Free
Active Splitter for Analog/Digital
CATV Set-Top Boxes
APS3606
feAtureS
AP
S3
60
6
APPLicAtionS
• CATV Set-Top Boxes with Multiple Tuners, and
Analog or Analog/Digital input signals.
S29 Package
28 Pin Qfn
5 mm x 5 mm x 1 mm
This active splitter from ANADIGICS accepts a
balanced RF input in the 50 MHz to 1.1 GHz frequency
range and provides three balanced 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 three
separate output paths that can drive video tuner
inputs.
Each of the RF paths includes independent Gain
Control. The overall linearity of each path is maintained
AGC1
AGC2
Product deScriPtion
across a wide gain range, ensuring low distortion
effects on each output signal.
Requiring only a single +5 Volt supply, the active
splitter design is implemented using the ANADIGICS
GaAs MESFET process. The RoHS-compliant surface
mount packaging makes the device ideal for use in
today’s multiple-tuner set-top boxes for Cable TV.
AGC3
RF1
OUT+
RF1
OUT-
RF
IN+
RF
IN-
RF2
OUT+
RF2
OUT-
RF3
OUT+
RF3
OUT-
figure 1: functional Block diagram
10/2009
ANADIGICS [ ANADIGICS, INC ]
