Maker : ANADIGICS
Part No. : APS3604

Datasheet PDF : APS3604.pdf
Cross Reference : APS3604 Cross Reference
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Product Information

APS3604 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 Wide 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 www.DataSheet4U.com the amplified signal to three stages, and couples 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 AGC VID2 AGC VID3 VID1OUT+ VID1OUTRFIN+ RFINVID2OUT+ VID2OUTVID3 OUT+ VID3 OUT- Figure 1: Functional Block Diagram 11/2004 APS3604 GND GND GND GND GND GND 23 28 27 26 25 24 VCC GND RFIN+ GND RFINGND AGC VID1 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 NAME V CC GND RFIN+ 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 (-) 4 GND www.DataSheet4U.com 5 6 7 8 9 10 11 12 13 14 2 RFINGND AGCVID1 AGCVID2 AGCVID3 GND VID3OUT+ GND VID3OUTGND PRELIMINARY DATA SHEET - Rev 1.0 11/2004 APS3604 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 Ω 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 V °C The device may be operated safely over these conditions; however, parametric performance is guaranteed only over the conditions defined in the electrical specifications. www.DataSheet4U.com PRELIMINARY DATA SHEET - Rev 1.0 11/2004 3 APS3604 Table 4: DC Electrical Specifications (TC = +25 °C, VCC = +5 V, 75 Ω system) PARAMETER Current Consumption AGC Input Leakage Current MIN TYP 175 50 MAX UNIT mA µA COMMENTS from +5 V supply each AGC input Table 5: Video Tuner Path AC Electrical Specifications (TC = +25 °C, VCC = +5 V, 75 Ω system) PARAMETER Gain at Maximum AGC Gain at Minimum AGC Noise Figure CTB (1) MIN 4.5 - TYP 5 -23 4.8 -70 -70 -67 30 30 -8 75 MAX 6 -66 -66 - UNIT dB...

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