AMT128503 1.25 Gb/s Integrated 850 nm MSM-TIA Data Sheet - Rev. 0 FEATURES · 1.25 Gb/s Differential Output TIA · 3.3V Operation · Automatic Gain Control · 850nm Photodetector with 100 mm x 100 mm Active Area · Integrated MSM detector & TIA · TO-46 Ultra Flat Window or Lens Package · TO-56 Ultra Flat Window Package APPLICATIONS · Gigabit Ethernet (1.250Gb/s) · Fibre Channel (1.0625 Gb/s) TO-46F Ultra Flat Window Package PRODUCT DESCRIPTION The ANADIGICS AMT128503 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 TO-46L Lens Package 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, TO46 lens and TO56 flat window packaged receiver pass stringent reliability requirements. These products are readily designed into receivers and transceivers for Gigabit Ethernet and Fibre Channel applications. Figure 1: AMT128503 Equivalent Circuit VDD 4K VOUT VOUT AGC US Patents: 5047728, 5646573 PIN Charge Pump Ground TO-56F Ultra Flat Window Package 6.5 GHz Osc AMT128503 Table 1: Absolute Maximum Ratings V DD 6.0 V PIN + 5 dB m 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 D etector Acti ve Area Small Si gnal D i fferenti al Responsi vi ty (1) (@ 50 MHz) Bandwi dth(1) 100 x 100 1000 Output Resi stance 25 1500 MHz 300 1000 kHz 40 60 W dB m 0 (2) Opti cal Sensi ti vi ty (2) -20 D i fferenti al Output Voltage TRISE & TFALL (20 - 80%) V/W 1000 Low Frequency C utoff Opti cal Overload µm (3), (4) - 22 dB m 700 mV 260 (3), (4) D uty C ycle D i storti on (3), (5) 4 RMS Ji tter (3), (5), (6) 15 Total Ji tter (pk-pk) (3), (5), (7) 90 Supply C urrent Operati ng Voltage Range + 3.0 +3.3 0 % ps ps 55 Operati ng Ambi ent Temperature Range (1) (2) (3) (4) (5) (6) (7) ps 10 mA +3.6 V 70 °C Measured at 14 dBm optical input power with output connected into RL = 100W (differential) Measured at 10-10 BER with a 27-1 PRBS at 1.25 GB/s Input optical power = -3 dBm, RL = 100 W (differential). Measured with a 625 MHz, 50% duty cycle square wave. Measured with a 1.25 Gb/s, 27-1 PRBS. 1s about the center eye crossing. 6s about the center eye crossing. Table 3: Package Pin Description PIN 2 T46F/T46L D escription T56F D escription 1 VOUT - TIA Output Voltage (non-i nverted) Logi cal '1' wi th opti cal i nput VD D - Posi ti ve Supply Voltage 2 VD D - Posi ti ve Supply Voltage VOUT - TIA Output Voltage (i nverted) Logi cal "1" wi th opti cal i nput 3 VOUT - TIA Output Voltage (i nverted) Logi cal '0' wi th opti cal i nput Ground (case i s grounded) 4 Ground (case i s grounded) VOUT - TIA Output Voltage (non-i nverted) Logi cal "1" wi th opti cal i nput Data Sheet - Revision 0 03/01 AMT128503 Figure 3: Eye Diagram with an Optical Input Power of -1.0dBm Figure 2: Eye Diagram with an Optical Input Power of -17dBm 15mV/Div 175mV/Div 200ps/Div Figure 5: Bandwidth vs. Temperature Figure 4: Supply Current vs Temperature 1600 3V 3.3V 3.6V 45.0 3V 3.3V 3.6V 1500 Bandwidth (MHz) Supply Current (mA) 50.0 40.0 35.0 30.0 1400 1300 1200 1100 1000 900 25.0 0 20 40 60 80 0 100 20 40 60 80 100 Ambient Temperature (C) Ambient Temperature (C) Figure 7: Sensitivity vs Temperature Figure 6: Differential Responsivity vs Temperature -22.00 2000 3V 3.3V 3.6V 1800 -22.50 Sensitivity (dBm) Differential Responsivity (V/W) 200ps/Div -23.00 1600 -23.50 1400 -24.00 1200 3V 3.3V 3.6V -24.50 1000 -25.00 0 20 40 60 80 100 0 Ambient Temperature (C) 20 40 60 80 100 Ambient Temperature (C) Data Sheet - Revision 0 03/01 3 AMT128503 Figure 8: Test Setup for Frequency Response Lightwave Analyzer HP 8702D Laser DUT Test Fixture Optical Attenuator Power Supply Extinction Ratio= 3dB Figure 9: Test Setup for Sensitivity BERT Pulse Pattern Generator Error Detector Hybrid Coupler Limiting Amplifier Optical Attenuator Laser DUT Test Fixture Extinction Ratio = 9dB Power Supply Figure 10: Test Setup for Eye Measurements Digital Communication Analyzer HP83480A Pulse Pattern Generator Laser Optical Attenuator DUT Test Fixture Extinction Ratio = 9dB Power Supply 4 Data Sheet - Revision 0 03/01 25 dB Gain AMT128503 Figure 11: DUT Test Fixture Schematic VDD 0.1uF DUT VOUT 0.1uF V OUT 0.1 uF Figure 12: Application Schematic V DD 0.1uF 2 4K OUT 1 CF 3 OUT AGC Charge Pump 0.1uF RO 0.1uF LIMITING AMPLIFIER 6.5 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 Data Sheet - Revision 0 03/01 5 AMT128503 Figure 13: Evaluation Board Schematic VDD 0.1uF 2 4K OUT OUT AGC Charge Pump 6.5 GHz OSC 4 Figure 14: Evaluation Board Layout 6 Data Sheet - Revision 0 03/01 1 0.1uF 3 0.1uF VOUT VOUT AMT128503 Figure 15: T46F Package Outline Diagram Data Sheet - Revision 0 03/01 7 AMT128503 Figure 16: T46L Package Outline Diagram 8 Data Sheet - Revision 0 03/01 AMT128503 Figure 17: T56F Package Outline Diagram Data Sheet - Revision 0 03/01 9 AMT128503 Ordering Information Part N umber 10 Package Option Package D escription AMT128503T46F TO-46F Ultra Flat Wi ndow AMT128503T46L TO-46L Lens AMT128503T56F TO-56F Ultra Flat Wi ndow Data Sheet - Revision 0 03/01 AMT128503 Notes Data Sheet - Revision 0 03/01 11 AMT128503 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