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| APS3608 Active Splitter for CATV Set-Top Boxes PRELIMINARY DATA SHEET - Rev 1.0 FEATURES * * * * * * * * Single Input, Triple Output Design - Three Video Tuner Outputs Wideband Operation: To Above 1 GHz 5 dB Typical Noise Figure at 5 dB Gain Extended Dynamic Range AGC Control, Independent for each Tuner Path High Linearity, Low Distortion Single +5 V Supply Balanced 75 Ohm Inputs/Outputs RoHS Compliant/Lead Free APPLICATIONS * CATV Set-Top Boxes with Multiple Tuners 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 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 02/2007 APS3608 GND GND GND GND GND GND 23 28 27 26 25 24 VCC GND RFIN+ GND RFINGND AGCVID1 GND 22 21 20 19 18 17 16 15 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 02/2007 APS3608 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 (f) Supply Voltage (VCC) AGC Input Voltage (VAGC) RF Input Power (PIN) Case Temperature (TC) MIN 50 +0.3 -15 -20 TYP +5 - MAX 1100 +3.0 +15 +85 UNIT MHz V V COMMENTS max. gain at +3 V dBmV differential into 75 C 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 02/2007 3 APS3608 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 AGC Range Noise Figure CTB (1) MIN 4.5 28.0 - TYP 5.5 -24 29.5 4.8 -70 -70 -67 30 30 -8 75 MAX 6 -66 -66 - UNIT dB dB dB dB dB c dB c dB c dB dB dB COMMENTS at 1 GHz at 1 GHz at 1 GHz 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 02/2007 APS3608 PERFORMANCE DATA Figure 3: Gain vs. Frequency (TC = +25 C, VCC = +5 V) 10 Vagc: 0V 0.8 V +1.0 V +1.2 V +1.4 V +1.6 V +1.8 V +2.0 V +2.2 V +3.0V Figure 4: Input Return Loss vs. Frequency (TC = +25 C, VCC = +5 V) 0 Vagc: -5 0V 1.4 V 1.8 V +2.0 V +2.2 V +2.4 V +3.0 V 5 S11: Input Rteurn Loss (dB) 0 100 200 300 400 500 600 700 800 900 1000 1100 0 S21: Gain (dB) -5 -10 -15 -20 -25 -30 -10 -15 -20 -25 -30 0 100 200 300 400 500 600 700 800 900 1000 1100 Frequency (MHz) Frequency (MHz) Figure 5: Output Return Loss vs. Frequency (TC = +25 C, VCC = +5 V) 0 Vagc: -5 0V +0.8 V +1.0 V +1.4 V +2.0 V +2.2 V +2.6 V +3.0 V -15 -20 -10 Figure 6: Reverse Isolation vs. Frequency (TC = +25 C, VCC = +5 V) Vagc: 0V +0.8 V +1.0 V +1.2 V +3.0 V S22: Output Return Loss (dB) -10 -15 -20 -25 -30 -35 S12: Reverse Isolation (dB) 0 100 200 300 400 500 600 700 800 900 1000 1100 -25 -30 -35 -40 -45 -50 -55 -40 -60 0 300 600 900 1200 1500 1800 2100 2400 2700 3000 Frequency (MHz) Frequency (MHz) Figure 7: Noise Figure vs. Frequency (TC = +25 C, VCC = +5 V, VAGC = +3 V) 10 9 8 7 6 5 4 3 2 1 0 0 100 200 300 400 500 600 700 800 900 1000 1100 Noise Figure (dB) Frequency (MHz) PRELIMINARY DATA SHEET - Rev 1.0 02/2007 5 APS3608 Figure 8: CSO vs. Input Power (TC = +25 C, VCC = +5 V, f = 77 MHz, POUT = +6 dBmV, 135 channel flat input) -45 -50 -55 -60 Figure 9: CTB vs. Input Power (TC = +25 C, VCC = +5 V, f = 439 MHz, POUT = +6 dBmV, 135 channel flat input) -45 -50 -55 -60 CSO (dBc) CTB (dBc) -65 -70 -75 -80 -85 -90 -20 -15 -10 -5 0 5 10 15 20 25 -65 -70 -75 -80 -85 -90 -20 -15 -10 -5 0 5 10 15 20 25 Input Power (dBmV) Input Power (dBmV) Figure 10: Output Port-to-Port Isolation vs. Frequency (TC = +25 C, VCC = +5 V) -20 10 5 0 -5 Figure 11: Gain vs. AGC Voltage (TC = +25 C, VCC = +5 V) -30 -40 45 MHz 495 MHz 1005 MHz Isolation (dB) -50 Gain (dB) Vagc: 0V +3.0 V 0 300 600 900 1200 1500 1800 2100 2400 2700 3000 -10 -15 -60 -70 -20 -25 -30 0.0 0.5 1.0 1.5 2.0 2.5 3.0 -80 -90 Frequency (MHz) AGC Voltage (V) 6 PRELIMINARY DATA SHEET - Rev 1.0 02/2007 APPLICATION INFORMATION 28 27 26 25 24 23 22 GND GND GND GND GND GND GND +5 V +5 V 0.01uF 1 82pF 150 470nH +5 V 470nH 0.01uF VCC GND RFIN+ GND RFINGND GND VID2OUT- 15 GND AGCVID2 AGCVID3 AGCVID1 GND VID3OUT+ GND VID3OUT16 18 20 VID1OUT+ 21 GND VID1OUT- 19 GND VID2OUT+ 17 150 470nH 470nH 2 Video 1 Ouput (75 Ohms) RF Input (75 Ohms) 3 4 5 6 7 0.01uF see note 0.01uF 82pF 82pF 0.01uF Video 2 Ouput (75 Ohms) 82pF Figure 12: Application Circuit AGCVID1 8 9 10 11 12 13 14 +5 V PRELIMINARY DATA SHEET - Rev 1.0 02/2007 AGCVID2 AGCVID3 0.01uF 0.01uF 0.01uF 150 470nH 470nH 0.01uF 82pF Video 3 Output (75 Ohms) 82pF NOTE: Optional resistor across input pins may be used to tune input return loss. APS3608 7 APS3608 PACKAGE OUTLINE Figure 13: S29 Package Outline - 28 Pin 5 mm x 5 mm x 1 mm QFN 8 PRELIMINARY DATA SHEET - Rev 1.0 02/2007 APS3608 NOTES PRELIMINARY DATA SHEET - Rev 1.0 02/2007 9 APS3608 NOTES 10 PRELIMINARY DATA SHEET - Rev 1.0 02/2007 APS3608 NOTES PRELIMINARY DATA SHEET - Rev 1.0 02/2007 11 APS3608 ORDERING INFORMATION ORDER NUMBER TEMPERATURE RANGE -20 oC to +85 oC PACKAGE DESCRIPTION COMPONENT PACKAGING APS3608RS29P8 RoHS Compliant 28 Pin 5 mm x 5 mm x 1 mm 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. 12 PRELIMINARY DATA SHEET - Rev 1.0 02/2007 |
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