TMOD0110G5XE3 OC-192/STM-64 PB03-057HSPL

February 2003 TMOD0110G5XE3 10 Gbits/s Modulator Driver Features s Operation to 12.5 Gbits/s NRZ s Complementary outputs

Product Brief February 2003 TMOD0110G5XE3 TMOD0110G5XE3 10 Gbits/s Modulator Driver Features s Operation to 12.5 Gbits/s NRZ s Complementary outputs adjustable to 3.0 Vp-p each (RL = 50 ) s Low input amplitude requirement of 600 mVp-p s 28 ps typical rise/fall time (20% to 80%) s Internal 50 input/output terminations s Integrated data output high-level adjustment for EAM chirp control s Integrated pulse-width control s Single 5.2 V power supply s 32-lead, surface-mount, glass-metal seal package Applications s Optical transmitters using EAMs, Mach Zehnder modulators or DMLs s Digital video transmission s SONET/SDH test equipment s SONET/SDH OC-192/STM-64 OC-192/STM-64 transmission systems s 10.7 Gbits/s and 12.5 Gbits/s forward error correction (FEC) s 10G Ethernet (10.3125 Gbits/s) Description The Agere Systems TMOD0110G5XE3 TMOD0110G5XE3 is an integrated circuit used to drive electroabsorption modulators (EAMs) and electroabsorption-modulated lasers (EMLs), Mach-Zehnder (M-Z) lithium niobate modulators, or direct-modulated lasers (DMLs) that have a 50 input impedance. The TMOD0110G5XE3 TMOD0110G5XE3 can operate at data rates up to 12.5 Gbits/s (NRZ). The input buffer features grounded 50 terminations (no VTT or bypassing required) and can be driven single endedly or differentially with dc or ac coupled signals as low as 600 mVp-p. The 50 complementary outputs are adjustable to an amplitude of 3.0 V each with typical rise and fall times of 28 ps, making the TMOD0110G5XE3 TMOD0110G5XE3 ideal for driving push/pull M-Z modulators. Pulse-width control circuitry allows the user to adjust the output pulse width to compensate for the characteristics of the EAM/EML. The data output high level can be adjusted between 0 V and 1.0 V (50 load) by means of an internal current source without affecting pulse fidelity or using external inductors. The gain stage provides signal amplification prior to the output stage. The output stage consists of a differential pair, a current source, 50 on die back terminations, and current sources that are used to adjust the data output high level. The output differential pair provides the drive voltage to the load. The output voltage amplitude is user adjustable and controlled by the voltage (VIP) applied to the gate of the current source. An external 1 sense resistor in series with IP allows the user to monitor the output voltage swing (VAMP) by monitoring the total current (IP) in the output stage. The TMOD0110G5XE3 TMOD0110G5XE3 also features an integrated data output high-level adjustment for chirp control. Each of the complementary outputs is connected to an internal current source. The data output high-level is adjusted by applying a dc voltage to the gate of the appropriate current source. The TMOD0110G5XE3 TMOD0110G5XE3 is capable of providing a data output high voltage of up to 1.0 V (RL = 50 ). TMOD0110G5XE3 TMOD0110G5XE3 10 Gbits/s Modulator Driver Product Brief February 2003 Block Diagram GND VBIAS2 18.7 k 2.9 k 3 2 k 5 pF 900 50 DOUT DINB INPUT BUFFER 50 PULSEWIDTH CONTROL GAIN STAGE 50 DIN 5 pF 50 DOUTB 900 2.5 3 2.9 k VPWC VSS IP 2 k 5 pF 25 pF 18.7 k 900 1 k VIP VBIAS1 0717.a(F) Figure 1. TMOD0110G5XE3 TMOD0110G5XE3 Block Diagram For additional information, contact your Agere Systems Account Manager or the following: INTERNET: http://www.agere.com E-MAIL: docmaster@agere.com N. AMERICA: Agere Systems Inc., Lehigh Valley Central Campus, Room 10A-301C, 1110 American Parkway NE, Allentown, PA 18109-9138 1-800-372-2447, FAX 610-712-4106 (In CANADA: 1-800-553-2448, FAX 610-712-4106) ASIA: Agere Systems Hong Kong Ltd., Suites 3201 & 3210-12, 32/F, Tower 2, The Gateway, Harbour City, Kowloon Tel. (852) 3129-2000, FAX (852) 3129-2020 CHINA: (86) 21-5047-1212 (Shanghai), (86) 755-25881122 (Shenzhen) JAPAN: (81) 3-5421-1600 (Tokyo), KOREA: (82) 2-767-1850 (Seoul), SINGAPORE: (65) 6778-8833, TAIWAN: (886) 2-2725-5858 (Taipei) EUROPE: Tel. (44) 1344 296 400 Agere Systems Inc. reserves the right to make changes to the product(s) or information contained herein without notice. No liability is assumed as a result of their use or application. Agere, Agere Systems, and the Agere logo are trademarks of Agere Systems Inc. Copyright © 2003 Agere Systems Inc. All Rights Reserved February 2003 PB03-057HSPL PB03-057HSPL