APS3606 Datasheet, PDF (1/8 Pages) ANADIGICS, Inc – Active Splitter for Analog/Digital CATV Set-Top Boxes

FEATURES
• 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
APPLICATIONS
• CATV Set-Top Boxes with Multiple Tuners, and
Analog or Analog/Digital input signals.
APS3606
Active Splitter for Analog/Digital
CATV Set-Top Boxes
advanced product information - Rev 0.4
APS3606
S29 Package
28 Pin QFN
5 mm x 5 mm x 1 mm
PRODUCT DESCRIPTION
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
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.
AGC1 AGC2 AGC3
RFIN+
RFIN-
RF1OUT+
RF1OUT-
RF2OUT+
RF2OUT-
RF3OUT+
RF3OUT-
Figure 1: Functional Block Diagram
10/2009