AMT8100 1.25 Gb/s Integrated 850 nm MSM-TIA Data Sheet - Rev1 FEATURES · 1.25 Gb/s Differential Output TIA · 5.0V Operation · Automatic Gain Control · 850nm Photodetector with 100 mm2 Active Area · Integrated MSM Detector & TIA · TO46 Lens Package APPLICATIONS · · T46L TO-46L Lens Package Gigabit Ethernet (1.25 Gb/s) Fiber Channel (1.0625 Gb/s) Product Description The ANADIGICS AMT8100 is a 5V 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 lens packaged receiver pass stringent reliability requirements. These products are readily designed into receivers and transceivers for Gigabit Ethernet and Fibre Channel applications. Figure 1: AMT8100T46L Equivalent Circuit V DD 2 4K OUT 1 3 OUT AGC US Patents: 5047728, 5646573 PIN 4 AMT8100 Table 1: Absolute Maximum Ratings V DD 7.0 V PIN + 5 dB m TS Storage Temp. - 65 °C to 125 °C Table 2: Electrical Characteristics PAR AMETER MIN TYP MAX Wavelength (l ) 770 850 860 nm - 100 x 100 - µm2 Small Si gnal D i fferenti al Responsi vi ty (1) (@ 50 MHz) 1000 - - V/W Bandwi dth (1) 800 - 1500 MHz - 300 1000 kHz 25 40 60 Ohm - dB m D etector Acti ve Area Low Frequency C utoff Output Resi stance Opti cal Overload (2) 0 - Opti cal Sensi ti vi ty (3) -20 - 21 dB m - 650 - mV TRISE & TFALL (20 - 80%) (4), (5) - 260 - ps D uty C ycle D i storti on (4), (6) - 6 10 % RMS Ji tter (4), (6), (7) - 20 - ps Total Ji tter (pk-pk) (4), (6), (8) - 100 - ps mA D i fferenti al Output Voltage (4), (5) Supply C urrent Operati ng Voltage Range Operati ng Ambi ent Temperature Range (1) (2) (3) (4) (5) (6) (7) (8) - - 50 4.5 5.0 5.5 V 0 - 70 °C Measured at 14 dBm optical input power with output connected into RL = 100W (differential) Measured at 10-12 BER with a 27-1 PRBS at 1.25 GB/s -10 7 Measured at 10 BER with a 2 -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 P IN 2 U N IT D E S C R IP TION C OMME N T 1 V OUT - TIA Output Voltage (Non-i nverted) Logi cal '1' wi th opti cal i nput 2 V DD - P osi ti ve S upply Voltage +5 Volts 3 V OUT - TIA Output Voltage (Inverted) Logi cal '0' wi th opti cal i nput 4 Ground C ase i s grounded Data Sheet - Revision 1 03/01 AMT8100 Figure 3: Eye Diagram with an Optical Input Power of 1.0dB Figure 2: Eye Diagram with an Optical Input Power of 17dBm 10mV/Div 200ps/Div 150mV/Div Figure 4: Supply Current vs. Temperature 50.0 Figure 5: Bandwidth vs. Temperature 1600.0 4.5V 4.5V 5.0V 45.0 5.0V 5.5V 1400.0 Bandwidth (MHz) Supply Current (mA) 200ps/Div 40.0 35.0 30.0 5.5V 1200.0 1000.0 800.0 25.0 20.0 600.0 0 20 40 60 80 100 0 20 40 60 80 Figure 7: Sensitivity vs. Temperature Figure 6: Differential Responsvity vs. Temperature -20.0 1600.0 4.5V 4.5V -20.5 5.0V 5.0V 5.5V 5.5V -21.0 Sensitivity (dBm) Differential Responsivity (V/W) 100 Ambient Temperature (C) Ambient Temperature (C) 1400.0 1200.0 -21.5 -22.0 -22.5 -23.0 -23.5 1000.0 -24.0 0 20 40 60 80 100 0 Ambient Temperature (C) 20 40 60 80 100 Ambient Temperature (C) Data Sheet - Revision 1 03/01 3 AMT8100 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 1 03/01 25 dB Gain AMT8100 Figure 11: DUT Test Fixture Schematic VDD 0.1uF DUT VOUT V OUT 0.1 uF 0.1uF Figure 12: Application Schematic VDD 0.1uF 2 4K OUT 1 CF OUT 3 AGC 0.1uF RO 0.1uF LIMITING AMPLIFIER 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 1 03/01 5 AMT8100 Figure 13: Evaluation Board Schematic VDD 0.1uF 2 4K OUT OUT AGC 4 Figure 14: Evaluation Board Layout 6 Data Sheet - Revision 1 03/01 1 0.1uF 3 0.1uF VOUT VOUT AMT8100 Figure 15: T46L Package Outline Diagram Data Sheet - Revision 1 03/01 7 AMT8100 Ordering Information Part N umber AMT8100T46L Package Option TO-46L Package D escription Lens 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