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APS3602
Active Splitter for CATV Set-Top Boxes
PRELIMINARY DATA SHEET - Rev 1.0
FEATURES
* * * * * * Single Input, Triple Output Design - Three Video Tuner Outputs 5 dB Typical Noise Figure at 5 dB Gain Wide Dynamic Range AGC Control, Independent for each Tuner Path High Linearity, Low Distortion Single +5 V Supply Balanced 75 Ohm Inputs/Outputs
APPLICATIONS
* CATV Set-Top Boxes with Multiple Tuners
S29 Package 28 Pin QFN 5mm x 5mm x 1mm
PRODUCT DESCRIPTION
This active splitter from ANADIGICS accepts a balanced RF input in the 50 to 860 MHz frequency range and provides three balanced RF outputs with minimal degradation in signal quality. The singlepackage surface mount device amplifies the input signals using highly linear, low noise amplification stages, and couples the amplified signal to three separate output paths to drive video tuner inputs. Each of the output paths includes independent Automatic Gain Control (AGC). The overall linearity of each tuner path is maintained across a wide AGC 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 surface mount packaging makes the device ideal for use in today's multiple-tuner set-top boxes for Cable TV.
AGC VID1
AGCVID2
AGCVID3
VID1OUT+ VID1OUTRFIN+ RFINVID2OUT+ VID2OUTVID3OUT+ VID3OUT-
Figure 1: Functional Block Diagram
05/2004
APS3602
GND GND GND GND GND GND
23
28
27
26
25
24
22 21 20 19 18 17 16 15
VCC GND RFIN+ GND RFINGND AGCVID1
GND
1 2 3 4 5 6 7 8 9 10 11 12 13 14
VID1OUT+ GND VID1OUTGND VID2OUT+ GND VID2OUT-
VID3 OUT+
GND
AGCVID2
Figure 2: Pinout (X-ray Top View)
Table 1: Pin Description
PIN 1 2 3 4 5 6 7 8 9 10 11 12 13 14
2
NAME V CC GND RFIN+ GND RFINGND AGCVID1 AGCVID2 AGCVID3 GND VID3OUT+ GND VID3OUTGND
DESCRIPTION Supply Voltage Ground RF Input (+) Ground RF Input (-) Ground Video 1 AGC Control Input Video 2 AGC Control Input Video 3 AGC Control Input Ground Data Path Output (+) Ground Data Path Output (-) Ground
PIN 28 27 26 25 24 23 22 21 20 19 18 17 16 15
VID3 OUT-
AGCVID3
GND
GND
NAME GND GND GND GND GND GND GND VID1OUT+ GND VID1OUTGND VID2OUT+ GND VID2OUT-
DESCRIPTION Ground Ground Ground Ground Ground Ground Ground Video 1 Output (+) Ground Video 1 Output (-) Ground Video 2 Output (+) Ground Video 2 Output (-)
PRELIMINARY DATA SHEET - Rev 1.0 05/2004
APS3602
ELECTRICAL CHARACTERISTICS
Table 2: Absolute Minimum and Maximum Ratings PARAMETER Supply Voltage (VCC) AGC Input Voltage (VAGC) RF Input Power (PIN) MIN 0 0 MAX +8 +5 +25 UNIT V V dBmV differential into 75 COMMENTS
Stresses in excess of the absolute ratings may cause permanent damage. Functional operation is not implied under these conditions. Exposure to absolute ratings for extended periods of time may adversely affect reliability.
Table 3: Operating Ranges
PARAMETER Operating Frequency Supply Voltage (VCC) AGC Input Voltage (VAGC) RF Input Power (PIN) Case Temperature (TC)
MIN 50 +0.3 -15 -20
TYP +5 -
MAX 860 +3.0 +15 +85
UNIT MHz V V dBmV C
COMMENTS
max. gain at +3 V differential into 75
The device may be operated safely over these conditions; however, parametric performance is guaranteed only over the conditions defined in the electrical specifications.
PRELIMINARY DATA SHEET - Rev 1.0 05/2004
3
APS3602 Table 4: DC Electrical Specifications (TC = +25 C, VCC = +5 V, 75 system)
PARAMETER Current Consumption AGC Input Leakage Current MIN TYP 175 50 MAX UNIT mA A COMMENTS from +5 V supply each AGC input
Table 5: Video Tuner Path AC Electrical Specifications (TC = +25 C, VCC = +5 V, 75 system)
PARAMETER Gain at Maximum AGC Gain at Minimum AGC Noise Figure CTB
(1)
MIN 4.5 -
TYP 5 -21 4.8 -70 -70 -67 30 30 -8 75
MAX 6 -66 -66 -
UNIT dB dB dB dB c dB c dB c dB dB dB
COMMENTS
at maximum gain
CSO (1) XMOD
(1)
-
Isolation Between Output and Any Other Output Port Isolation Between Input and Output Input Return Loss Output Impedance
75 differential input differential
Notes: (1) 132 channels, +6 dBmV flat output, up to +15 dBmV flat input
4
PRELIMINARY DATA SHEET - Rev 1.0 05/2004
APS3602
PERFORMANCE DATA
Figure 3: Gain vs. Frequency (TA = +25 C, VCC = +5 V)
10
Figure 4: Input Return Loss vs. Frequency (TA = +25 C, VCC = +5 V)
-5 -6
5
S11: Input Return Loss (dB)
-7 -8 -9 -10 -11 -12 -13 Vagc = +3.0 V Vagc = +2.0 V Vagc = +1.5 V Vagc = +1.0 V Vagc = 0 V
0
S21: Gain (dB)
-5
Vagc = +3.0 V Vagc = +2.0 V Vagc = +1.5 V
Vagc = +1.0 V Vagc = 0 V
-10
-15
-20
-14 -15
0 100 200 300 400 500 600 700 800 900 1000
-25
0
100
200
300
400
500
600
700
800
900
1000
Frequency (MHz)
Frequency (MHz)
Figure 5: Output Return Loss vs. Frequency (TA = +25 C, VCC = +5 V)
0
-25 -30
Figure 6: Reverse Isolation vs. Frequency (TA = +25 C, VCC = +5 V)
-5
S22: Output Return Loss (dB)
-10
S12: Reverse Isolation (dB)
-35 -40 -45 -50 -55 -60 -65 Vagc = +3.0 V Vagc = +2.0 V Vagc = +1.5 V Vagc = +1.0 V Vagc = 0 V
-15 Vagc = +3.0 V Vagc = +2.0 V Vagc = +1.5 V Vagc = +1.0 V Vagc = 0 V
-20
-25
-30 0 100 200 300 400 500 600 700 800 900 1000
-70 0 100 200 300 400 500 600 700 800 900 1000
Frequency (MHz)
Frequency (MHz)
PRELIMINARY DATA SHEET - Rev 1.0 05/2004
5
APS3602
Figure 7: CSO vs. Input Power (TA = +25 C, VCC = +5 V, POUT = +6 dBmV, 132 channel flat input)
-45 -50 -55 -60 77 MHz 445 MHz 865 MHz -45 -50 -55 -60
Figure 8: CTB vs. Input Power (TA = +25 C, VCC = +5 V, POUT = +6 dBmV, 132 channel flat input)
77 MHz 445 MHz 865 MHz
CSO (dBc)
-65 -70 -75 -80 -85 -90 5 10 15 20 25
CTB (dBc)
-65 -70 -75 -80 -85 -90 5 10 15 20 25
Input Power (dBmV)
Input Power (dBmV)
Figure 9: Output Port-to-Port Isolation vs. Frequency (TA = +25 C, VCC = +5 V, POUT = +6 dBmV)
-20
10
Figure 10: Gain vs. AGC Voltage (TA = +25 C, VCC = +5 V)
5
-30
-40
0
Isolation (dB)
-50
Gain (dB)
Vagc = +3 V Vagc = 0 V 0 500 1000 1500 2000 2500 3000
-5
-60
-10
-70
-15
-80
-20
-90
-25 0 0.5 1 1.5 2 2.5 3
Frequency (MHz)
AGC Voltage (V)
6
PRELIMINARY DATA SHEET - Rev 1.0 05/2004
28 27 26 25 23 22
24
APPLICATION INFORMATION
GND
GND
GND
GND
GND
GND
GND
+5 V
+5 V
21 20 19 18 17 16 15
0.01uF
1
330pF
75W 75W +5 V 270nH 270nH 0.01uF
VCC GND RFIN+ VID1OUTGND VID2OUT+ GND
VID3OUT+
AGCVID2 AGC VID3
75W 75W 270nH 270nH
VID1OUT+ GND 330pF
2
Video 1 Ouput (75 Ohms)
RF Input (75 Ohms)
3 4
0.01uF
see note 0.01uF
GND RFINGND
VID3 OUT-
5 6 7
330pF
0.01uF
Video 2 Ouput (75 Ohms) 330pF
AGCVID1
GND GND GND
14
VID2OUT-
AGCVID1
8 9 10 11 12 13
+5 V
Figure 11: Application Circuit
AGCVID2 AGCVID3 0.01uF 0.01uF 0.01uF
75W 75W 270nH 270nH 0.01uF
330pF
Video 3 Ouput (75 Ohms) 330pF
PRELIMINARY DATA SHEET - Rev 1.0 05/2004
NOTE: Optional resistor across input pins may be used to tune input return loss.
APS3602
7
APS3602
PACKAGE OUTLINE
Figure 12: S29 Package Outline - 28 Pin 5mm x 5mm x 1mm QFN
8
PRELIMINARY DATA SHEET - Rev 1.0 05/2004
APS3602
NOTES
PRELIMINARY DATA SHEET - Rev 1.0 05/2004
9
APS3602
NOTES
10
PRELIMINARY DATA SHEET - Rev 1.0 05/2004
APS3602
NOTES
PRELIMINARY DATA SHEET - Rev 1.0 05/2004
11
APS3602
ORDERING INFORMATION
ORDER NUMBER TEMPERATURE RANGE -20 oC to +85 oC PACKAGE DESCRIPTION COMPONENT PACKAGING
A P S 3602S 29P 8
28 P i n 5mm x 5mm x 1mm Tape and Reel, 2500 pieces per Reel QFN Package
ANADIGICS, Inc.
141 Mount Bethel Road Warren, New Jersey 07059, U.S.A. Tel: +1 (908) 668-5000 Fax: +1 (908) 668-5132 URL: http://www.anadigics.com E-mail: Mktg@anadigics.com IMPORTANT NOTICE
ANADIGICS, Inc. reserves the right to make changes to its products or to discontinue any product at any time without notice. The product specifications contained in Advanced Product Information sheets and Preliminary Data Sheets are subject to change prior to a product's formal introduction. Information in Data Sheets have been carefully checked and are assumed to be reliable; however, ANADIGICS assumes no responsibilities for inaccuracies. ANADIGICS strongly urges customers to verify that the information they are using is current before placing orders.
WARNING
ANADIGICS products are not intended for use in life support appliances, devices or systems. Use of an ANADIGICS product in any such application without written consent is prohibited.
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PRELIMINARY DATA SHEET - Rev 1.0 05/2004

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