1:2 Single-Ended, Low
Data Sheet
Rev. A Document Feedback
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FEATURES
Ideal for CATV applications
Excellent frequency response
1.7 GHz, −3 dB bandwidth
1 dB flatness to 1.2 GHz
Low noise figure: 4.4 dB
Low distortion
Composite second order (CSO): −62 dBc
Composite triple beat (CTB): −72 dBc
1 dB compression point of 8.5 dBm
3 dB of gain per output channel
24 dB isolation between output channels
75 Ω input and outputs
Small package size
12-lead, 3 mm × 3 mm lead frame chip scale package
APPLICATIONS
Set-top boxes
Home gateways
CATV distribution systems
FUNCTIONAL BLOCK DIAGRAM
VIN
VO2
VO1
GND
VCC
0.01µF
IL
1µH
5V5V
ADA4303-2
249Ω
249Ω
0.01µF
0.01µF
0.1µF0.1µF
06364-001
Figure 1.
Splitter modules
Digital cable ready (DCR) TVs
GENERAL DESCRIPTION
The ADA4303-2 is a 75 Ω, two-output active splitter for use
in applications where a lossless signal split is required. Typical
applications include multituner digital set-top boxes, cable splitter
modules, multituner/digital cable ready (DCR) televisions, and
home gateways where traditional solutions require discrete
passive splitter modules with separate fixed gain amplifiers.
The ADA4303-2 is a low cost alternative that simplifies designs
and improves system performance by integrating a signal splitter
element and a gain block into a single IC. The ADA4303-2 is
available in a 12-lead chip scale package (LFCSP) and operates
in the extended industrial temperature range of −40°C to +85°C.
4
3
2
1
0
–1
–2
–3
–4
–5
–6
–7
–8
50 100 40001000
GAIN (dB)
FREQUENCY (MHz)
T
A
= +85°C
T
A
= +25°C
T
A
= –40°C
06364-010
Figure 2. Gain (S21) vs. Frequency
