AMT8301 2.125 Gb/s Integrated 850nm MSM-TIA Data Sheet - Rev 0 FEATURES · Differential Output TIA · 3.3V Operation · Automatic Gain Control · Integrated 850nm MSM Detector & TIA · TO-46 Ultra Flat-Window or Lens Hermetic Package · High Reliability APPLICATIONS · 2x Fibre Channel (2.125 Gb/s) T46F TO-46 Ultra Flat Window Package Product Description The ANADIGICS AMT8301 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 TO46 flat window and TO46 lens packaged receiver pass stringent reliability requirements. These products are readily designed into receivers and transceivers for 2X Fibre Channel applications. Figure 1: AMT8301 Equivalent Ciruit V DD 2 OUT 1 3 OUT AGC US Patents: 5047728, 5646573 PIN Charge Pump 4 T46L TO-46 Lens Package 7.5 GHz Osc AMT8301 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 1000 - - V/W 1400 1900 - MHz Low Frequency C utoff - - 300 kHz Output Resi stance - 40 - W 0 - - dB m -19 - - dB m - 750 - mV - 140 - ps D etector D i ameter Small Si gnal D i fferenti al Responsi vi ty (1) (@ 50 MHz) Bandwi dth(1) Opti cal Overload (2) Opti cal Sensi ti vi ty (2) D i fferenti al Output Voltage TRISE and TFALL (20-80%) (3) (3) - 5 - % (3), (4) - 50 - ps Supply C urrent - 35 55 mA + 3.0 +3.3 +3.6 Volts 0 - 80 °C D uty C ycle D i storti on Total Ji tter (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 Pin D escription C omment 1 VOUT - TIA Output Voltage (non-Inverted) Logi cal '1' wi th opti cal i nput 2 VDD - Posi ti ve Supply Voltage +3.3 Volts 3 VOUT - TIA Output Voltage (Inverted) Logi cal '0' wi th opti cal i nput 4 Ground C ase i s grounded 2 Data Sheet - Revision 0 03/01 AMT8301 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 Data Sheet - Revision 0 03/01 3 AMT8301 Figure 6: Bandwidth vs. Temperature 50.0 2400 45.0 2200 Bandwidth (MHz) Supply Current (mA) Figure 5: Supply Current vs. Temperature 40.0 35.0 3V 30.0 2000 1800 1600 1400 3V 1200 3.3V 3.3V 3.6V 3.6V 25.0 1000 0 20 40 60 80 100 0 20 Case Temperature (C) 1500 -18.00 1400 -18.50 1300 1200 3V 3.3V 1000 3.6V 20 40 60 Case Temperature (C) 100 80 -19.00 -19.50 -20.00 -20.50 3V -21.00 3.3V 100 3.6V -22.00 0 20 40 60 Case Temperature (C) 4 80 -21.50 900 0 60 Figure 8: Sensitivity vs. Temperature Sensitivity (dBm) Differential Responsivity (V/W) Figure 7: Differential Responsivity vs. Temperature 1100 40 Case Temperature (C) Data Sheet - Revision 0 03/01 80 100 AMT8301 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 Data Sheet - Revision 0 03/01 5 AMT8301 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 2 OUT 1 CF 3 OUT AGC Charge Pump 0.1uF RO 0.1uF LIMITING AMPLIFIER 7.5 GHz OSC 4 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 Data Sheet - Revision 0 03/01 AMT8301 Figure 14: T46F Package Outline Diagram Data Sheet - Revision 0 03/01 7 AMT8301 Figure 15: T46L Package Outline Diagram 8 Data Sheet - Revision 0 03/01 AMT8301 Ordering Information Part N umber Package Option Package D escription AMT8301T46F TO-46F Ultra Flat Wi ndow Package AMT8301T46L TO-46L Lens Package Data Sheet - Revision 0 03/01 9 AMT8301 Notes 10 Data Sheet - Revision 0 03/01 AMT8301 Notes Data Sheet - Revision 0 03/01 11 AMT8301 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. 12