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1.25 Gb/s Integrated 850 nm MSM-TIA 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 AMT8100 Data Sheet - Rev 2 APPLICATIONS * * Gigabit Ethernet (1.25 Gb/s) Fiber Channel (1.0625 Gb/s) T46L/TO-46L Lens Package 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 V DD 2 4K 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. OUT 1 3 OUT AGC US Patents: 5047728, 5646573 PIN 4 Figure 1: AMT8100T46L Equivalent Circuit 03-2001 AMT8100 Figure 2: Pin Outline (Bottom View) Table 1: Package Pin Description PIN 1 2 3 4 D ESC R IPTION VOUT - TIA Output Voltage (Non-i nverted) VDD - Posi ti ve Supply Voltage VOUT - TIA Output Voltage (Inverted) Ground C OMMEN T Logi cal '1' wi th opti cal i nput +5 Volts Logi cal '0' wi th opti cal i nput C ase i s grounded ELECTRICAL CHARACTERISTICS Table 2: Absolute Maximum Ratings V DD PIN TS 7.0 V + 5 dB m Storage Temp. - 65 C to 125 C 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. 2 Data Sheet - Rev. 2 03-2001 AMT8100 Table 3: Electrical Characteristics PAR AMETER Wavelength ( l) D etector Acti ve Area Small Si gnal D i fferenti al Responsi vi ty (1) (@ 50 MHz) Bandwi dth (1) Low Frequency C utoff Output Resi stance Opti cal Overload (2) Opti cal Sensi ti vi ty (3) D i fferenti al Output Voltage (4), (5) TRISE & TFALL (20 - 80%) D uty C ycle D i storti on (4), (6) RMS Ji tter (4), (6), (7) (4), (5) MIN 770 1000 800 25 0 -20 4.5 0 TYP 850 100 x 100 300 40 - 21 650 260 6 20 100 5.0 - MAX 860 1500 1000 60 10 50 5.5 70 U N IT nm m2 V/W MHz kHz Ohm dB m dB m mV ps % ps ps mA V C Total Ji tter (pk-pk) (4), (6), (8) Supply C urrent Operati ng Voltage Range Operati ng Ambi ent Temperature Range NOTES: (1) Measured at 14 dBm optical input power with output connected into RL = 100W (differential) (2) Measured at 10-12 BER with a 27-1 PRBS at 1.25 GB/s -10 7 (3) Measured at 10 BER with a 2 -1 PRBS at 1.25 Gb/s. (4) Input optical power = -3 dBm, RL = 100 W (differential). (5) Measured with a 625 MHz, 50% duty cycle square wave. (6) Measured with a 1.25 Gb/s, 27-1 PRBS. (7) 1s about the center eye crossing. (8) 6s about the center eye crossing. Data Sheet - Rev. 2 03-2001 3 AMT8100 PERFORMANCE DATA Figure 3: Eye Diagram with an Optical Input Power of 17dBm Figure 4: Eye Diagram with an Optical Input Power of 1.0dB 10mV/Div 200ps/Div 150mV/Div 200ps/Div Figure 5: Supply Current vs. Temperature 50.0 45.0 Supply Current (mA) 4.5V 5.0V 5.5V Figure 6: Bandwidth vs. Temperature 1600.0 4.5V 5.0V 1400.0 Bandwidth (MHz) 5.5V 40.0 35.0 30.0 25.0 20.0 0 20 40 60 80 100 Ambient Temperature (C) 1200.0 1000.0 800.0 600.0 0 20 40 60 80 100 Ambient Temperature (C) Figure 7: Differential Responsvity vs. Temperature 1600.0 4.5V Figure 8: Sensitivity vs. Temperature -20.0 4.5V Differential Responsivity (V/W) 5.0V 5.5V -20.5 -21.0 Sensitivity (dBm) 5.0V 5.5V 1400.0 -21.5 -22.0 -22.5 -23.0 -23.5 1200.0 1000.0 0 20 40 60 80 100 Ambient Temperature (C) -24.0 0 20 40 60 80 100 Ambient Temperature (C) 4 Data Sheet - Rev. 2 03-2001 AMT8100 MEASUREMENT METHODS Lightwave Analyzer HP 8702D Laser Optical Attenuator DUT Test Fixture Extinction Ratio= 3dB Power Supply Figure 9: Test Setup for Frequency Response BERT Pulse Pattern Generator Error Detector Hybrid Coupler Limiting Amplifier 25 dB Gain Laser Optical Attenuator DUT Test Fixture Extinction Ratio = 9dB Power Supply Figure 10: Test Setup for Sensitivity Pulse Pattern Generator Digital Communication Analyzer HP83480A Laser Optical Attenuator DUT Test Fixture Extinction Ratio = 9dB Power Supply Figure 11: Test Setup for Eye Measurements Data Sheet - Rev. 2 03-2001 5 AMT8100 VDD 0.1uF VOUT 0.1uF DUT 0.1 uF V OUT Figure 12: DUT Test Fixture Schematic APPLICATION INFORMATION VDD 0.1uF 2 4K OUT 1 CF 3 0.1uF RO 0.1uF LIMITING AMPLIFIER OUT AGC 4 Figure 13: Application Schematic CF is an optional single pole noise filter CF = 1 2 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 - Rev. 2 03-2001 AMT8100 VDD 0.1uF 2 4K OUT 1 0.1uF VOUT VOUT OUT AGC 3 0.1uF 4 Figure 14: Evaluation Board Schematic Figure 15: Evaluation Board Layout Data Sheet - Rev. 2 03-2001 7 AMT8100 PACKAGE OUTLINE Figure 16: T46L Package Outline Diagram 8 Data Sheet - Rev. 2 03-2001 AMT8100 NOTES Data Sheet - Rev. 2 03-2001 9 AMT8100 NOTES 10 Data Sheet - Rev. 2 03-2001 AMT8100 NOTES Data Sheet - Rev. 2 03-2001 11 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 Mktg@anadigics.com IMPORTANT NOTICE ANADIGICS, Inc. reserves the right to make changes to its products or to discontinue any product at any time without notice. The product specifications contained in Advanced Product Information sheets and Preliminary Data Sheets are subject to change prior to a products formal introduction. Information in Data Sheets have been carefully checked and are assumed to be reliable; however, ANADIGICS assumes no responsibilities 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. Data Sheet - Rev. 2 03-01 12 |
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