Data Sheet February 1999 LG1602 Decision Circuit Features ■ Operation up to 3 Gbits/s ■ Good sensitivity to low input signals ■ Low power dissipation ■ Surface-mount package Applications ■ SONET/SDH transmission systems ■ Digital video transmission ■ Digital test instruments Functional Description The LG1602 is a gallium arsenide (GaAs) decision circuit. It features a sensitive broadband input amplifier and a D-type flip-flop that retimes and regenerates an input data stream that is weakened by noise, jitter, and intersymbol interference. The LG1602 has complementary 50 Ω output buffers. dc feedback ensures input threshold control for input levels as low as 25 mV, when using dc balanced input data. The LG1602 is available in a hermetically sealed 16-lead glass-metal surface-mount package. V+OUT V–OUT V–REF VSS 110 pF 25 kΩ 2 pF 50 Ω V–IN V+IN 50 Ω V+REF 25 kΩ 110 pF V–CLK Q D 50 Ω D 50 Ω V+CLK 2 pF GND 5-7667(F)r.3 Figure 1. LG1602 Functional Diagram Data Sheet February 1999 LG1602 Decision Circuit Pin Information GND GND 16 15 NC 14 NC 13 1 12 GND V+REF 2 11 3 10 4 9 V+CLK V+IN V–CLK V–IN V–REF VSS 5 6 7 V–OUT V+OUT NC 8 NC 12-3223(F).ar.2 Figure 2. Pin Diagram Table 1. Pin Descriptions Pin Symbol 2 V+CLK Clock Input. May be grounded, if not used. 3 V–CLK Clock Input. May be grounded, if not used. 4 VSS 5 V–OUT Negative Data Output. ac couple or terminate with 50 Ω to GND. 6 V+OUT Positive Data Output. ac couple or terminate with 50 Ω to GND. 9 V–REF Data Negative Reference. Bypass to GND with 0.047 µF in series with 5 Ω. 10 V–IN Negative Data Input. ac couple with 0.047 µF. 11 V+IN Positive Data Input. ac couple with 0.047 µF. 12 V+REF Data Positive Reference. Bypass to GND with 0.047 µF in series with 5 Ω. 1, 15, 16, Package Back GND Ground. For optimum performance, package back should contact board ground plane. 7, 8, 13, 14 NC 2 Name/Description dc Supply Voltage. No Connection. Lucent Technologies Inc. Data Sheet February 1999 LG1602 Decision Circuit Absolute Maximum Ratings Stresses in excess of the absolute maximum ratings can cause permanent or latent damage to the device. These are absolute stress ratings only. Functional operation of the device is not implied at these or any other conditions in excess of those given in the operational sections of the data sheet. Exposure to absolute maximum ratings for extended periods can adversely affect device reliability. Table 2. Absolute Maximum Ratings Parameter Min Max Unit Supply Voltage Range (VSS) 0.5 –7 V Power Dissipation — 1 W Voltage (all pins) 0.5 VSS V Clock Input (V+CLK, V–CLK) — ±2 V V+REF – V+IN — ±2 V V–REF – V–IN — ±2 V –40 125 °C 0 100 °C Storage Temperature Range Operating Case Temperature Range Recommended Operating Conditions Table 3. Recommended Operating Conditions Parameter Case Temperature Power Supply Symbol Min Max Unit tCASE 0 75 °C VSS –4.7 –5.7 V Handling Precautions Although protection circuitry has been designed into this device, proper precautions should be taken to avoid exposure to electrostatic discharge (ESD) during handling and mounting. Lucent employs a human-body model (HBM) and a charged-device model (CDM) for ESD-susceptibility testing and protection design evaluation. No industrywide standard has been adopted for the CDM. However, a standard HBM (resistance = 1500 Ω, capacitance = 100 pF) is widely used and, therefore, can be used for comparison purposes. The HBM ESD threshold presented here was obtained by using these circuit parameters. Table 4. ESD Threshold HBM ESD Threshold Device Voltage LG1602 ≥200 V Mounting and Connections Certain precautions must be taken when using solder. For installation using a constant temperature solder, temperatures of under 300 °C may be employed for periods of time up to 5 seconds, maximum. For installation with a soldering iron (battery operated or nonswitching only), the soldering tip temperature should not be greater than 300 °C and the soldering time for each lead must not exceed 5 seconds. Lucent Technologies Inc. 3 Data Sheet February 1999 LG1602 Decision Circuit Electrical Characteristics Bit rate = 2.488 Mbits/s NRZ and data pattern = 223 – 1 PRBS, unless otherwise indicated. See Figure 3 for the timing and signal levels and Figure 5 for the test circuit, when using the TF1001A test fixture. Note: Minimum and maximum values are testing requirements. Typical values are characteristics of the device and are the result of engineering evaluations. Typical values are for information purposes only and are not part of the testing requirements. Parameter Symbol Conditions 10–9 Maximum Bit Rate Data Input Voltage |VH – <V>| + |<V> – VL| Data Input Sensitivity — — BER = tR, tF ≤ 165 ps (20%—80%) — Clock Input Voltage |VH – <V>| + |<V> – VL| Clock Phase Margin Clock Phase Minimum — Clock Phase Maximum t2 Clock Phase Center tC Setup Time tS Hold Time tH Propagation Delay tPD Output Voltage (VH – VL) — Output Transition Time — Output Return Loss — Data Input Return Loss — Clock Input Return Loss Power Supply Current Thermal Resistance — — — BER = 10–9, limited clock phase margin tR, tF ≤ 85 ps (20%—80%), duty cycle = 50% ± 10% — Data transition to negative edge of CLOCK IN Data transition to negative edge of CLOCK IN Data transition to negative edge of CLOCK IN Valid input data to negative edge of CLOCK IN Negative edge CLOCK IN to valid DATA IN CLOCK IN negative edge to output transition Outputs ac coupled (see Figure 5) 20%—80%, outputs ac coupled 1 MHz—2 GHz, outputs ac coupled 100 kHz—300 kHz 0.3 MHz—1500 MHz 1.5 GHz—1.8 GHz 2.4 GHz—2.6 GHz — Junction to case bottom 4 — t1 LG1602AXB tCASE = 25 °C VSS = –5.2 V LG1602BXB tCASE = 0 °C— 75 °C VSS = –4.9 V to –5.5 V Max Min Typ Max 2.5 — — — 800 200 900 — Min 3 200 Typ — — — 20 500 — 250 — 360 — — — — — — Unit GHz mV 20 — mV — 900 mV 250 — 360 150 — 205 ps ps — 455 510 — ps 330 — — 330 — ps — 185 — — 185 205 ps — –73 — — –73 –53 ps — 1200 — — 1200 — ps 500 600 — 500 600 — mV — — 100 — — 100 ps — 15 — — 15 — dB — — — — — — 10 15 15 15 115 20 — — — — — — 10 15 15 15 — — — — — — 115 20 — — — — — — dB dB dB dB mA °C/W — — 1000 200 Lucent Technologies Inc. Data Sheet February 1999 LG1602 Decision Circuit Electrical Characteristics (continued) t1 t2 VH DATA IN D0 D1 <V> D2 VL VH <V> CLOCK IN VL tPD VH D0 DATA OUT 0 VL 5-7668(F)r.2 Figure 3. Timing Diagram 50 Ω 50 Ω ≥0.047 µF ≥0.047 µF COUPLING CAPACITORS OPTIONAL 0.047 µF V+OUT 0.1 µF V–OUT 6 5Ω 5 4 5Ω VSS 110 pF –5.2 V + 25 kΩ V–REF 9 2 pF 50 Ω 0.047 µF V–IN 10 V+IN 11 Q D 5 Ω V+REF 12 V–CLK 50 Ω D 50 Ω 50 Ω 50 Ω – 3 2 pF V+CLK 2 50 Ω 25 kΩ CLOCK 0.047 µF 110 pF GND CLOCK 1, 15, 16 TF1001A FIXTURE BOUNDARY 5-7669(F)r.2 Figure 4. Test Circuit Lucent Technologies Inc. 5 Data Sheet February 1999 LG1602 Decision Circuit Electrical Characteristics (continued) DATA IN (10 mV/div) DATA OUT (400 mV/div) TIME (100 ps/div) 5-7670(F)r.1 Figure 5. Typical Performance 6 Lucent Technologies Inc. Data Sheet February 1999 LG1602 Decision Circuit Outline Diagram 16-Pin, Glass-Metal, Surface-Mount Package Dimensions are in inches. 0.230 SQ REF 0.215 SQ 13 1 0.030 TYP TOP VIEW 9 0.012 TYP 5 0.366 ± 0.007 0.005 + + DETAIL A 0.068 REF R0.08 0.060 MAX 0—4° 0.000—0.004 0.020 DETAIL A 12-3224(F)r.4 Lucent Technologies Inc. 7 Data Sheet February 1999 LG1602 Decision Circuit Ordering Information 8 Device Code Package Temperature Comcode (Ordering Number) LG1602AXB Packaged on 16 mm tape and reel 0 °C to 75 °C 106385297 LG1602BXB Packaged in flat pack container 0 °C to 75 °C 106995715 TF1001A Test fixture — 106497589 Lucent Technologies Inc. Data Sheet February 1999 LG1602 Decision Circuit Notes Lucent Technologies Inc. 9 LG1602 Decision Circuit Interactive Terminal Transmission Convergence Preliminary Data Sheet February 1999 For additional information, contact your Microelectronics Group Account Manager or the following: http://www.lucent.com/micro INTERNET: [email protected] E-MAIL: N. AMERICA: Microelectronics Group, Lucent Technologies Inc., 555 Union Boulevard, Room 30L-15P-BA, Allentown, PA 18103 1-800-372-2447, FAX 610-712-4106 (In CANADA: 1-800-553-2448, FAX 610-712-4106) ASIA PACIFIC: Microelectronics Group, Lucent Technologies Singapore Pte. Ltd., 77 Science Park Drive, #03-18 Cintech III, Singapore 118256 Tel. (65) 778 8833, FAX (65) 777 7495 CHINA: Microelectronics Group, Lucent Technologies (China) Co., Ltd., A-F2, 23/F, Zao Fong Universe Building, 1800 Zhong Shan Xi Road, Shanghai 200233 P. R. China Tel. (86) 21 6440 0468, ext. 316, FAX (86) 21 6440 0652 JAPAN: Microelectronics Group, Lucent Technologies Japan Ltd., 7-18, Higashi-Gotanda 2-chome, Shinagawa-ku, Tokyo 141, Japan Tel. (81) 3 5421 1600, FAX (81) 3 5421 1700 EUROPE: Data Requests: MICROELECTRONICS GROUP DATALINE: Tel. (44) 1189 324 299, FAX (44) 1189 328 148 Technical Inquiries: GERMANY: (49) 89 95086 0 (Munich), UNITED KINGDOM: (44) 1344 865 900 (Ascot), FRANCE: (33) 1 40 83 68 00 (Paris), SWEDEN: (46) 8 594 607 00 (Stockholm), FINLAND: (358) 9 4354 2800 (Helsinki), ITALY: (39) 02 6608131 (Milan), SPAIN: (34) 1 807 1441 (Madrid) Lucent Technologies 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. No rights under any patent accompany the sale of any such product(s) or information. Copyright © 1999 Lucent Technologies Inc. All Rights Reserved February 1999 DS99-142HSPL