AMT8302 2.125 Gb/s Integrated 850nm MSM-TIA Preliminary Data Sheet - Rev 0 FEATURES · Differential Output TIA · 3.3V Operation · Automatic Gain Control · Integrated 850nm MSM Detector & TIA · TO-56 Ultra Flat-Window Hermetic Package · High Reliability APPLICATIONS · 2x Fibre Channel (2.125 Gb/s) T56F TO-56 Ultra Flat Window Package Product Description The ANADIGICS AMT8302 is a 3.3V monolithically integrated Metal-Semiconductor-Metal (MSM) photodetector and transimpedance amplifier (TIA) used to convert an 850nm input optical signal into a differential output voltage, and is manufactured in ANADIGICS 6 GaAs wafer fabrication facility. The integrated MSM and TIA receiver maximizes the receiver performance by minimizing the photodetector input parasitics to the TIA and internally biasing the photodetector to achieve high sensitivity, bandwidth and overload performance. As an integrated product the reliability is inherently better than a discrete solution, and both the MSM-TIA integrated circuit and TO56 flat window packaged receiver pass stringent reliability requirements. These products are readily designed into receiversand transceivers for 2X Fibre Channel applications. Figure 1: AMT8302 Equivalent Circuit V DD 1 OUT 4 2 OUT AGC US Patents: 5047728, 5646573 PIN Charge Pump 3 7.5 GHz Osc AMT8302 Table 1: Absolute Maximum Ratings V DD 6.0V PIN +5dBm TS Storage Temp. - 65 °C to 125 °C Table 2: Electrical Characteristics PAR AMETER MIN TYP MAX U N IT Wavelength (l) 770 850 860 nm - 100 - µm D etector D i ameter 1000 - - V/W (1) 1400 1900 - MHz Low Frequency C utoff - - 300 kHz Output Resi stance - 40 - W Opti cal Overload 0 - - dB m -19 - - dB m - 750 - mV TRISE and TFALL (20-80%) (3) - 140 - ps D uty C ycle D i storti on - 5 - % Total Ji tter (3), (4) - 50 - ps Supply C urrent - 35 55 mA + 3.0 +3.3 +3.6 Volts 0 - 80 °C Small Si gnal D i fferenti al Responsi vi ty (1) (@ 50 MHz) Bandwi dth (2) Opti cal Sensi ti vi ty (2) D i fferenti al Output Voltage (3) (3) Operati ng Voltage Range Operati ng C ase Temperature Range (1) Measured at 14 dBm optical input power with output connected into RL = 100W (differential) (2) Measured at 10-10 BER with a 27-1 PRBS at 2.125 Gb/s (3) Measured with a 27-1 PRBS at 2.125 Gb/s, an input optical power of -3dBm and RL = 100 W (differential) (4) 6 s about the center eye crossing Table 3: Package PIN Description 2 Pin D escription C omment 1 VDD - Posi ti ve Supply Voltage +3.3 Volts 2 VOUT - TIA Output Voltage (Inverted) Logi cal '0' wi th opti cal i nput 3 Ground C ase i s grounded 4 VOUT - TIA Output Voltage (Non-Inverted) Logi cal '1' wi th opti cal i nput Preliminary Data Sheet - Revision 0 03/01 AMT8302 Figure 2: Eye Diagram with an Optical Input Power of -18dBm 10mV/Div 100ps/Div Figure 3: Eye Diagram with an Optical Input Power of -8.0dBm 60mV/Div. 100ps/Div Figure 4: Eye Diagram with an Optical Input Power of 0dBm 150mV/Div. 100ps/Div Preliminary Data Sheet - Revision 0 03/01 3 AMT8302 Figure 5: Supply Current vs. Temperature Figure 6: Bandwidth vs. Temperature 2400 2200 45.0 Bandwidth (MHz) Supply Current (mA) 50.0 40.0 35.0 3V 3.3V 30.0 2000 1800 1600 3V 1400 3.3V 1200 3.6V 25.0 3.6V 1000 0 20 40 60 80 100 0 20 Case Temperature (C) Figure 7: Differential Responsivity vs. Temperature 60 100 -18.00 -18.50 Sensitivity (dBm) 1400 1300 1200 1100 3V 1000 0 20 40 60 Case Temperature (C) 80 -19.00 -19.50 -20.00 -20.50 3.3V -21.00 3.6V -21.50 900 100 3V 3.3V 3.6V -22.00 0 20 40 60 Case Temperature (C) 4 80 Figure 8: Sensitivity vs. Temperature 1500 Differential Responsivity (V/W) 40 Case Temperature (C) Preliminary Data Sheet - Revision 0 03/01 80 100 AMT8302 Figure 9: Test Setup for Frequency Response Lightwave Analyzer HP 8702D DUT Test Fixture Optical Attenuator Laser Power Supply Extinction Ratio= 3dB Figure 10: Test Setup for Sensitivity BERT Pulse Pattern Generator Error Detector Hybrid Coupler Limiting Amplifier Optical Attenuator Laser 25 dB Gain DUT Test Fixture Extinction Ratio = 9dB Power Supply Figure 11: Test Setup for Eye Measurements Digital Communication Analyzer HP83480A Pulse Pattern Generator Laser Optical Attenuator DUT Test Fixture Extinction Ratio = 9dB Power Supply Preliminary Data Sheet - Revision 0 03/01 5 AMT8302 Figure 12: DUT Test Fixture Schematic VDD 0.1uF DUT VOUT 0.1uF V OUT 0.1 uF Figure 13: Application Schematic V DD 0.1uF 1 OUT 0.1uF 4 CF OUT AGC Charge Pump 2 RO 0.1uF LIMITING AMPLIFIER 7.5 GHz OSC 3 CF is an optional single pole noise filter CF = 1 2π fcR fc is the desired cutoff frequency R = 50 W RO is required with high input resistance limiting amplifiers RO = 100 W 6 Preliminary Data Sheet - Revision 0 03/01 AMT8302 Figure14: T56F Package Outline Design Preliminary Data Sheet - Revision 0 03/01 7 AMT8302 Ordering Information Part N umber AMT8302T56F Package Option TO-56F Package D escription Ultra Flat Wi ndow Package ANADIGICS, Inc. 141 Mount Bethel Road Warren, New Jersey 07059, U.S.A Tel: +1 (908) 668-5000 Fax: +1 (908) 668-5132 http://www.anadigics.com [email protected] IMPORTANT NOTICE ANADIGICS, Inc. reserves the right to make changes to its products or discontinue any product at any time without notice. The Advanced Product data sheets and product specifications contained in this data sheet are subject to change prior to a products formal introduction. The information in this data sheet has been carefully checked and is assumed to be reliable. However, ANADIGICS assumes no responsibility 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. 8