RCLAMP7002M

PROTECTION PRODUCTS - RailClamp Description RailClamps are surge rated diode arrays designed to protect high speed data interfaces. The RClamp series has been specifically designed to protect sensitive components from overvoltage caused by ESD (electrostatic discharge), CDE (cable discharge events), EFT (electrical fast transients), and lightning. The RClampTM7002M has been optimized for use on the next generation of ADSL interfaces. Their high surge capability makes them particularly useful in systems that utilize gas tubes as the primary protection component. This device integrates surge rated, low capacitance steering diodes in a small MSOP-10L package. Each protection diode features a large area junction to minimize clamping voltage and increase reliability during high current surges. It has a maximum capacitance of only 10pF and may be used to protect two high-speed lines without sacrificing signal integrity. The RClamp7002M may be used on systems operating from 3.3 to 70 volts. This means that they may be used in applications that use the Central Office battery as the main supply. The RClamp7002M is also designed for easy board layout by allowing the signal traces to run straight through the device. The high surge capability, ease of layout coupled with the low capacitance and clamping voltage of the RClamp7002M makes it the superior choice for protecting two high speed lines against high energy telecommunication surges. RailClamp Low Capacitance TVS Diode Array Features 1000 Watts peak pulse power (8/20µs) Protection for high-speed data lines to IEC 61000-4-2 (ESD) ±15kV (air), ±8kV (contact) IEC 61000-4-4 (EFT) 40A (5/50ns) IEC 61000-4-5 (Lightning) 1kV, 24A (1.2/50µs) Low clamping voltage: 10V at Ipp = 40A (8/20µs) Array of surge rated suppression diodes Protects two high speed lines Low capacitance: 10pF (I/O to Ground) Operating voltage range: 3.3 - 70V Small package saves board space Solid-state silicon-avalanche technology RClamp7002M Mechanical Characteristics JEDEC MSOP-10L package Molding compound flammability rating: UL 94V-0 Marking: Marking code and date code Packaging: Tape and Reel per EIA 481 Lead Finish: Matte tin RoHS/WEEE Compliant Applications ADSL Lines Central Office Equipment T1/E1 secondary IC Side Protection Small Office Home Office (SOHO) Applications WAN/LAN Equipment ISDN S/T Interface ATM Interfaces Circuit Diagram PIN Configuration Pin 7, 8, 9 Line 1 1 In GND Pin 1 Pin 10 Pin 5 Pin 6 Line 1 Out Vcc Vcc Vcc Line 2 Out GND GND Line 2 In Pin 2, 3,4 MSOP-10L (Top View) Revision 12/26/2005 1 www.semtech.com RClamp7002M PROTECTION PRODUCTS Absolute Maximum Rating R ating Peak Pulse Power (tp = 8/20µs) Peak Pulse Current (tp = 8/20µs) ESD p er IEC 61000-4-2 (Air) ESD p er IEC 61000-4-2 (Contact) Op erating Temp erature Storage Temp erature Symbol P PP IP P VESD TJ TSTG Value 1000 70 15 8 -55 to +125 -55 to +150 Units W A kV °C °C Electrical Characteristics (T=25oC) Parameter Reverse Stand-Off Voltage Reverse Breakdown Voltage Reverse Leakage Current Forward Voltage Clamp ing Voltage Clamp ing Voltage Clamp ing Voltage Junction Cap acitance Symbol VRWM V BR IR Vf VC VC VC Cj It = 50µA VRWM = 70V, T=25°C If = 15mA IPP = 1A, tp = 8/20µs Any I/O p in to Ground IPP = 40A, tp = 8/20µs Any I/O p in to Ground IPP = 70A, tp = 8/20µs Any I/O p in to Ground VR = 0V, f = 1MHz Any I/O p in to Ground VR = 0V, f = 1MHz Between I/O p ins 3 85 5 1.2 1.5 10 14.3 10 Conditions Minimum Typical Maximum 70 Units V V µA V V V V pF pF  2005 Semtech Corp. 2 www.semtech.com RClamp7002M PROTECTION PRODUCTS Typical Characteristics Non-Repetitive Peak Pulse Power vs. Pulse Time 10 110 100 90 80 70 60 50 40 30 20 10 0 Power Derating Curve Peak Pulse Power - P PP (kW) 1 % of Rated Power or IPP 0.1 0.1 1 10 Pulse Duration - tp ( s) 100 1000 0 25 50 75 100 125 150 Ambient Temperature - TA (oC) Pulse Waveform 110 100 90 80 Percent of IPP 70 60 50 40 30 20 10 0 0 5 10 15 Time (µs) 20 25 30 0.4 0 Capacitance vs. Reverse Voltage Waveform Parameters: tr = 8µs td = 20µs 1.2 1.0 Normalized Capacitance e -t 0.8 td = IPP/2 0.6 f = 1 MHz 10 20 30 40 50 60 70 Reverse Voltage - VR (V) Forward Voltage vs. Forward Current CH1 S21 Insertion Loss S21 LOG 6 dB / REF 0 dB 1: -.3775 dB 900 MHz 0 dB 1 14 12 Forward Voltage (V) 10 8 6 4 2 0 0 20 40 Peak Pulse Current (A) START . 030 M Hz 2: -3.1072 dB 1.8 GHz 2 3 -6 dB -12 dB -18 dB 3: -11.75 dB 2.5 GHz Waveform Parameters: tr = 8µs td = 20µs 60 80 -24 dB -30 dB -36 dB -42 dB STOP 3000. 000000 M Hz  2005 Semtech Corp. 3 www.semtech.com RClamp7002M PROTECTION PRODUCTS Applications Information Device Connection Options for Protection of Two High-Speed Data Lines This device is designed to protect two data lines from transient over-voltages by clamping them to a fixed reference. When the voltage on the protected line exceeds the reference voltage (plus diode VF) the steering diodes are forward biased, conducting the transient current away from the sensitive circuitry. Data line inputs are connected at pins 1 and 5. The outputs are connected at pins 10 and 6 respectively. The negative reference is connected at pins 2, 3, and 4. These pins should be connected directly to a ground plane on the board for best results. The path length is kept as short as possible to minimize parasitic inductance. The positive reference is connected at pins 7, 8, and 9. The options for connecting the positive reference are as follows: 1. To protect data lines and the power line, connect pins 7, 8 and 9 directly to the positive supply rail (VCC). In this configuration the data lines are referenced to the supply voltage. An external TVS diode may be added between the supply rail and ground in order to prevent over-voltage on the supply rail. 2. In applications where no positive supply reference is available, or complete supply isolation is desired, an external TVS diode may be used as the reference. The steering diodes will begin to conduct when the voltage on the protected line exceeds the working voltage of the TVS (plus one diode drop). Line 1 1 In GND GND GND Line 2 In Schematic Pin 7, 8, 9 Pin 1 Pin 10 Pin 5 Pin 6 Pin 2, 3,4 Pin Configuration Line 1 Out Vcc Vcc Vcc Line 2 Out  2005 Semtech Corp. 4 www.semtech.com RClamp7002M PROTECTION PRODUCTS Applications Information - Spice Model Vcc I/O 0.7 nH RClamp7002M Spice Model Table 1 - R Clamp7002M Spice Parameters Parameter IS BV VJ RS IB V CJO TT M N EG Unit Amp Volt Volt Ohm Amp Farad sec --eV D1 (LCR D) 1.0E-20 200 0.53 0.037 1E-3 3.5E-12 2.541E-9 0.142 1.1 1.11 D2 (LCR D) 1.0E-20 200 0.53 0.14 1E-3 3.5E-12 2.541E-9 0.142 1.1 1.11  2005 Semtech Corp. 5 www.semtech.com RClamp7002M PROTECTION PRODUCTS Outline Drawing SO-8 Outline Drawing -- MSOP 10L e A N 2X E/2 PIN 1 INDICATOR ccc C 2X N/2 TIPS 12 B E1 E H GAGE PLANE 0.25 (L1) D aaa C SEATING PLANE A2 C A1 bxN bbb C A-B D A DETAIL L c SIDE VIEW SEE DETAIL D DIM DIMENSIONS INCHES MILLIMETERS MIN NOM MAX MIN NOM MAX .043 .000 .006 .030 .037 .007 .011 .003 .009 .114 .118 .122 .114 .118 .122 .193 BSC .020 BSC .016 .024 .032 (.037) 10 0° 8° .004 .003 .010 1.10 0.00 0.15 0.75 0.95 0.17 0.27 0.08 0.23 2.90 3.00 3.10 2.90 3.00 3.10 4.90 BSC 0.50 BSC 0.40 0.60 0.80 (.95) 10 0° 8° 0.10 0.08 0.25 A 01 A A1 A2 b c D E1 E e L L1 N 01 aaa bbb ccc A NOTES: 1. CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES). 2. DATUMS -A- AND -B- TO BE DETERMINED AT DATUM PLANE -H3. DIMENSIONS "E1" AND "D" DO NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS. 4. REFERENCE JEDEC STD MO-187, VARIATION BA. Land Pattern - MSOP 10L X DIM (C) G Z C G P X Y Z DIMENSIONS INCHES MILLIMETERS (.161) .098 .020 .011 .063 .224 (4.10) 2.50 0.50 0.30 1.60 5.70 Y P NOTES: 1. THIS LAND PATTERN IS FOR REFERENCE PURPOSES ONLY. CONSULT YOUR MANUFACTURING GROUP TO ENSURE YOUR COMPANY'S MANUFACTURING GUIDELINES ARE MET.  2005 Semtech Corp. 6 www.semtech.com RClamp7002M PROTECTION PRODUCTS Marking Codes 702M XXXX * XXXX = Date Code ** Dot indicates Pin 1 Ordering Information Part Number RClamp 7002M.TBT Working Voltage 5V Qty per Reel 500 R eel Size 7 Inch Note: Lead finish is matte tin RailClamp and RClamp are marks of Semtech Corporation Contact Information Semtech Corporation Protection Products Division 200 Flynn Road, Camarillo, CA 93012 Phone: (805)498-2111 FAX (805)498-3804  2005 Semtech Corp. 7 www.semtech.com