1- and 2-Channel PicoGuard® AC Signal ESD Protector CM1214A Features • • • • • • • • Single channel ESD protection for an AC signal up to ±5V for 0.25W transmit power Connects two channels in series for signals up to ±10V (1W transmit power) ±8kV ESD protection per IEC 61000-4-2 contact discharge Sub-1pF loading capacitance Minimal variation with voltage and temperature Each I/O pin can withstand over 1000 ESD strikes* SOT23-3 and MSOP-8 packages RoHS-compliant, lead-free finishing Applications • • • • RF switch and amplifier protection RF modules and RF IC protection Wireless handsets and WLAN High-speed AC signals for Gbit ethernet, etc. Product Description The CM1214A PicoGuard® ESD protector is used to protect bipolar signal lines against electrostatic discharge (ESD). The CM1214A allows operation in high-speed environments with signals levels up to ±5V. The CM1214A comes in two versions: • The CM1214A-01SO is a single channel ESD protector and is available in a 3-lead SOT23-3 package. • The CM1214A-02MR is a dual channel ESD protector and is available in an 8-lead MSOP-8 package. The low sub-1pF loading capacitance makes the CM1214A-01SO ideal for protecting high-speed interfaces including RF switches and amplifiers. The CM1214A-02MR is ideal for dual high-speed signal pairs used in Gigabit Ethernet, ADSL, etc. The CM1214A-02MR can also be used for higher transmit voltage applications by connecting the two channels in series. Both devices come in RoHS-compliant, lead-free finishing. Block Diagram ©2010 SCILLC. All rights reserved. April 2010 – Rev.2 Publication Order Number: CM1214A/D CM1214A Package/Pinout Diagrams Pin Descriptions SOT23-3 PACKAGE PIN DESCRIPTIONS DESCRIPTION MSOP-8 PACKAGE PIN DESCRIPTIONS PIN NAME PIN NAME 1 CH1 ESD Channel 1 CH1 ESD Channel 2 CH2 ESD Channel 2 N.C. No connect 3 N.C. No connect 3 N.C. No connect 4 CH3 ESD Channel 5 N.C. No connect 6 CH4 ESD Channel 7 CH2 ESD Channel 8 N.C. No connect Rev. 2 | Page 2 of 14 | www.onsemi.com DESCRIPTION CM1214A Ordering Information PART NUMBERING INFORMATION Lead-free Finish Pins Package 1 Ordering Part Number Part Marking 3 SOT23 CM1214A-01SO RF1S 8 MSOP CM1214A-02MR RF2S Note 1: Parts are shipped in Tape & Reel form unless otherwise specified. Specifications ABSOLUTE MAXIMUM RATINGS PARAMETER RATING UNITS 7 V Operating Temperature Range –40 to +85 °C Storage Temperature Range –65 to +150 °C 225 400 mW mW DC Voltage between CH pins Package Power Rating SOT23-3 Package (CM1214A-01SO) MSOP8 Package (CM1214A-02MR) Rev. 2 | Page 3 of 14 | www.onsemi.com CM1214A STANDARD OPERATING CONDITIONS PARAMETER Operating Temperature Range RATING UNITS –40 to +85 °C ELECTRICAL OPERATING CHARACTERISTICS (SEE NOTE 1) SYMBOL PARAMETER CONDITIONS MIN TYP MAX ±7 UNITS VST Standoff Voltage I=10µA V VESD ESD Voltage Protection Peak discharge voltage between CH pins a) Contact discharge per IEC 61000-4-2 standard Notes 2 and 3 ILEAK Channel Leakage Current TA=25°C, 5.5V between CH pins ±0.1 RDYN Dynamic Resistance TA=25°C, IPP = 1A, tP = 8/20µS; Any I/O pin to Ground; Note 4 1.36 Ω VCL Channel Clamp Voltage TA=25°C, IPP = 1A, tP = 8/20µS; Note 4 11.3 V CIN Channel Input Capacitance Voltage between CH pins = 0V Voltage between CH pins = 5V Measured at 1MHz between CH pins ±8 Note 1: All parameters specified at TA = –40°C to +85°C unless otherwise noted. Note 2:. Standard IEC 61000-4-2 with CDischarge = 150pF, RDischarge = 330Ω,. Note 3:. From CH pin with other CH pin grounded. Note 4: No-connect pins are left open for all tests. Rev. 2 | Page 4 of 14 | www.onsemi.com 0.4 0.35 kV 0.6 0.54 ±1.0 0.9 0.8 µA pF pF CM1214A Performance Information Typical Capacitance Characteristics vs. Voltage CM1214A illustrates how the loading capacitance remains mainly flat across the voltage range from 0V to 5V, the voltage between CH pins. Figure 1. CM1214A Capacitance vs. Voltage Typical Voltage Current (VI) Characteristics (low current) CM1214A shows how the CM1214A experiences a symmetrical I/V curve, without any snapback or trigger voltage. It gradually starts to turn on at about 6V and clamps about 7V. Figure 2. CM1214A VI Characteristics, Low Current Rev. 2 | Page 5 of 14 | www.onsemi.com CM1214A Typical Voltage-Current (VI) Characteristics (high current, pulse condition) CM1214A shows how the CM1214A experiences a symmetrical I/V curve, without any snapback or trigger voltage. The curve shows only one polarity. Figure 3. CM1214A VI Characteristics, Low Current, Pulse (clamping) Condition Typical Capacitance Characteristics vs. Temperature CM1214A illustrates the loading capacitance for both 0VDC and 1.65VDC input across the -40 to 85°C temperature range. Figure 4. CM1214A Capacitance vs. Temperature Rev. 2 | Page 6 of 14 | www.onsemi.com CM1214A Performance Information (cont’d) Typical Filter Performance (nominal conditions unless specified otherwise, 50 Ohm Environment) Figure 5. Insertion Loss vs. Frequency (0V DC Bias) Figure 6. Insertion Loss vs. Frequency (2.5V DC Bias) Rev. 2 | Page 7 of 14 | www.onsemi.com CM1214A Application Information CM1214A-01SO The CM1214A-01SO protects a single bipolar signal line often found in RF circuits. One I/O pin (pin 1 for example) is connected to the signal line for protection, and the other I/O pin is tied to GND. It is important to have a solid ground connection to reduce the clamping voltage. Pin 3 of the 3-lead SOT23 must be left open (and not connected on the PCB). CM1214A-02MR The CM1214A-02MR protects two bipolar lines, such as for Gbit Ethernet. The PCB traces underneath the package connect across to the corresponding pins (Pins 1, 4, 6 and 7). Pins 2, 3, 5 and 8 of the MSOP-8 package must be left open (and not connected on the PCB). Any disturbance on the line above or below the standoff voltage is clamped. Figure 7. Typical Application - RF Switch and Amplifier Protection, CM1214A-01SO in 3-lead SOT23 Figure 8. Typical Application - Ethernet Protection, CM1214A-02MR in 8-lead MSOP Rev. 2 | Page 8 of 14 | www.onsemi.com CM1214A Application Information (cont’d) Figure 9. Typical Application - IEEE1394 Protection, CM1214A-02MR in 8-lead MSOP Rev. 2 | Page 9 of 14 | www.onsemi.com CM1214A Mechanical Details The CM1214A is supplied in SOT23-3 and MSOP-8 packages. Dimensions are presented below. SOT23-3 Mechanical Specifications The CM1214A-01SO is supplied in a 3-pin SOT23 package. Dimensions are presented below. PACKAGE DIMENSIONS Package SOT23-3 (JEDEC name is TO-236) Pins 3 Dimensions Millimeters Min A 0.89 A 0.89 A A1 0.01 A1 0.01 A1 b 0.30 b 0.30 b c 0.08 c 0.08 c D 2.80 D 2.80 D E 2.10 E 2.10 E E1 1.20 E1 1.20 E1 e 0.95 BSC e 0.95 BSC e e1 1.90 BSC e1 L 0.40 L L1 0.54 REF L1 0.54 REF # per tape and reel 3000 pieces Controlling dimensions: Millimeters L1 Package Dimensions for SOT23-3 Rev. 2 | Page 10 of 14 | www.onsemi.com CM1214A Tape and Reel Specifications PART NUMBER PACKAGE SIZE (mm) POCKET SIZE (mm) B0 X A0 X K0 TAPE WIDTH W REEL DIAMETER QTY PER REEL P0 P1 CM1214A-01SO 2.92 X 2.37 X 1.01 2.77 X 3.15 X 1.22 8mm 178mm (7") 3000 4mm 4mm Rev. 2 | Page 11 of 14 | www.onsemi.com CM1214A Mechanical Details (Cont’d) MSOP-8 Mechanical Specifications, 8 pin The CM1214A-02MR is supplied in an 8-pin MSOP package. Dimensions are presented below. PACKAGE DIMENSIONS Package SOT143 Pins 4 Dimensions Millimeters Inches Min Max Min Max A 0.75 0.95 0.030 0.037 A1 0.05 0.15 0.002 0.006 B 0.28 0.38 0.011 0.015 C 0.13 0.23 0.005 0.009 D 2.90 3.10 0.114 0.122 E 2.90 3.10 0.114 0.122 e 0.65 BSC 0.026 BSC H 4.90 BSC 0.193 BSC L # per tape and reel 0.40 0.70 0.016 0.028 4000 pieces Controlling dimension: millimeters Package Dimensions for MSOP-8 Rev. 2 | Page 12 of 14 | www.onsemi.com CM1214A Tape and Reel Specifications PART NUMBER PACKAGE SIZE (mm) POCKET SIZE (mm) B0 X A0 X K0 TAPE WIDTH W REEL DIAMETER QTY PER REEL P0 P1 CM1214A-02SR 3.00 X 3.00 X 0.85 3.3 X 5.3 X 1.3 12mm 330mm (13") 4000 4mm 8mm Rev. 2 | Page 13 of 14 | www.onsemi.com CM1214A ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. 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This literature is subject to all applicable copyright laws and is not for resale in any manner. PUBLICATION ORDERING INFORMATION LITERATURE FULFILLMENT: N. American Technical Support: 800-282-9855 Literature Distribution Center for ON Semiconductor Toll Free USA/Canada P.O. Box 5163, Denver, Colorado 80217 USA Europe, Middle East and Africa Technical Support: Phone: 303-675-2175 or 800-344-3860 Toll Free USA/Canada Phone: 421 33 790 2910 Fax: 303-675-2176 or 800-344-3867 Toll Free USA/Canada Japan Customer Focus Center For additional information, please contact your Email: [email protected] Phone: 81-3-5773-3850 local Sales Representative Rev. 2 | Page 14 of 14 | www.onsemi.com ON Semiconductor Website: www.onsemi.com Order Literature: http://www.onsemi.com/orderlit