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Data Sheet February 1999
LG1602 Decision Circuit
Features
s s s s
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 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
Operation up to 3 Gbits/s Good sensitivity to low input signals Low power dissipation Surface-mount package
Applications
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SONET/SDH transmission systems Digital video transmission Digital test instruments
V-REF V-IN V+IN V+REF
110 pF 25 k 50 D 50 25 k 110 pF D Q
VSS 2 pF V-CLK 50 50 V+CLK 2 pF GND
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Figure 1. LG1602 Functional Diagram
LG1602 Decision Circuit
Data Sheet February 1999
Pin Information
GND GND NC NC
16
15
14
13
1 GND 2 V+CLK 3 V-CLK 4 VSS
12 V+REF 11 V+IN 10 V-IN 9 V-REF
5
6
7
8
V-OUT V+OUT NC
NC
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Figure 2. Pin Diagram Table 1. Pin Descriptions Pin 2 3 4 5 6 9 10 11 12 1, 15, 16, Package Back 7, 8, 13, 14 Symbol V+CLK V-CLK VSS V-OUT V+OUT V-REF V-IN V+IN V+REF GND Name/Description Clock Input. May be grounded, if not used. Clock Input. May be grounded, if not used. dc Supply Voltage. Negative Data Output. ac couple or terminate with 50 to GND. Positive Data Output. ac couple or terminate with 50 to GND. Data Negative Reference. Bypass to GND with 0.047 F in series with 5 . Negative Data Input. ac couple with 0.047 F. Positive Data Input. ac couple with 0.047 F. Data Positive Reference. Bypass to GND with 0.047 F in series with 5 . Ground. For optimum performance, package back should contact board ground plane. No Connection.
NC
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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 Supply Voltage Range (VSS) Power Dissipation Voltage (all pins) Clock Input (V+CLK, V-CLK) V+REF - V+IN V-REF - V-IN Storage Temperature Range Operating Case Temperature Range Min 0.5 -- 0.5 -- -- -- -40 0 Max -7 1 VSS 2 2 2 125 100 Unit V W V V V V C C
Recommended Operating Conditions
Table 3. Recommended Operating Conditions Parameter Case Temperature Power Supply Symbol tCASE VSS Min 0 -4.7 Max 75 -5.7 Unit C 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 , 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 LG1602 Voltage 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
LG1602 Decision Circuit
Data Sheet February 1999
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 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 -- -- -- 20 -- 360 150 510 330 185 -73 1200 600 -- 15 -- -- -- -- 115 20 -- 900 -- 205 -- -- 205 -53 -- -- 100 -- -- -- -- -- -- -- Unit
Maximum Bit Rate Data Input Voltage |VH - | + | - VL| Data Input Sensitivity Clock Input Voltage |VH - | + | - VL| Clock Phase Margin Clock Phase Minimum Clock Phase Maximum Clock Phase Center Setup Time Hold Time Propagation Delay Output Voltage (VH - VL) Output Transition Time Output Return Loss Data Input Return Loss
-- -- -- -- -- t1 t2 tC tS tH tPD -- -- -- --
BER = tR, tF 165 ps (20%--80%) 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
10-9
Min 3 200 -- 500 250 -- -- -- -- -- -- 500 -- -- -- -- -- -- -- --
Typ -- -- 20 -- 360 -- -- 330 185 -73 1200 600 -- 15 10 15 15 15 115 20
GHz mV mV mV ps ps ps ps ps ps ps mV ps dB dB dB dB dB mA C/W
1000 200 -- -- -- -- -- -- -- -- 100 -- -- -- -- -- -- -- 250 -- 455 -- -- -- -- 500 -- -- 10 15 15 15 -- --
Clock Input Return Loss Power Supply Current Thermal Resistance
-- -- --
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Lucent Technologies Inc.
Data Sheet February 1999
LG1602 Decision Circuit
Electrical Characteristics (continued)
t1 t2 VH DATA IN D0 D1 D2 VL VH CLOCK IN tPD DATA OUT D0 VL VH 0 VL
5-7668(F)r.2
Figure 3. Timing Diagram
50 0.047 F
50 0.047 F COUPLING CAPACITORS OPTIONAL
0.047 F 0.1 F V+OUT 6 110 pF V-REF 9 50 V-IN 0.047 F 50 5 V+REF 12 25 k CLOCK 0.047 F 110 pF 1, 15, 16 TF1001A FIXTURE BOUNDARY
5-7669(F)r.2
V-OUT 5 4
5 VSS -5.2 V + 2 pF - 3 50 V-CLK
5
25 k Q D D 50 2 pF
10 11
V+IN
50 2
V+CLK 50 GND CLOCK
Figure 4. Test Circuit
Lucent Technologies Inc.
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LG1602 Decision Circuit
Data Sheet February 1999
Electrical Characteristics (continued)
DATA IN (10 mV/div)
DATA OUT (400 mV/div)
TIME (100 ps/div)
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Figure 5. Typical Performance
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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
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Lucent Technologies Inc.
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LG1602 Decision Circuit
Data Sheet February 1999
Ordering Information
Device Code LG1602AXB LG1602BXB TF1001A Package Packaged on 16 mm tape and reel Packaged in flat pack container Test fixture Temperature 0 C to 75 C 0 C to 75 C -- Comcode (Ordering Number) 106385297 106995715 106497589
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Lucent Technologies Inc.
Data Sheet February 1999
LG1602 Decision Circuit
Notes
Lucent Technologies Inc.
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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: docmaster@micro.lucent.com 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 (c) 1999 Lucent Technologies Inc. All Rights Reserved
February 1999 DS99-142HSPL

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