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| PRELIMINARY CM1214 1 and 2 Channel PicoGuardTM AC Signal ESD Protector Features * * * * * * * Single channel ESD protector for AC signals up to 5V signals 8kV ESD protection per IEC 61000-4-2 contact discharge Sub-1pF loading capacitance Matching I/O to Ground capacitance 0.02pF Minimal variation with voltage and temperature Each I/O pin can withstand over 1000 ESD strikes SOT23-3 or MSOP-8 package Product Description The CM1214 PicoGuardTM ESD protector is used to protect bipolar signal lines against electrostatic discharge (ESD). The CM1214 allows operation in highspeed environments with signals levels up to +5V. The sub-1pF low loading capacitance makes the CM121401ST ideal for protecting high-speed interfaces including RF switch and amplifier protection. The CM121402MS is ideal for dual high-speed signal pairs such as with Gigabit Ethernet and ADSL, etc. The CM1214-01ST is a single channel ESD protector and is available in a 3-lead SOT23-3 package. The CM1214-02MS is a dual channel ESD protector and is available in a 8-lead MSOP-8 package. Applications * * * * RF switch and amplifier protection RF modules and RF IC protection Wireless handsets and WLAN High-speed AC signals for Gbit Ethernet, etc. Electrical Schematics CH1 CH1 CH3 CH2 CM1214-01ST CH2 CH4 CM1214-02MS (c) 2003 California Micro Devices Corp. All rights reserved. 06/20/03 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 L Tel: 408.263.3214 L Fax: 408.263.7846 L www.calmicro.com 1 PRELIMINARY CM1214 PACKAGE / PINOUT DIAGRAMS Top View CH1 1 Top View CH1 1 2 3 4 8 7 6 5 N.C. CH2 CH4 N.C. N.C. N.C. CH2 RF1 2 RF2 3 N.C. CH2 3-Lead SOT23-3 8-pin MSOP-8 Note: This drawing is not to scale. SOT23-3 PACKAGE PIN DESCRIPTIONS PIN 1 2 3 NAME DESCRIPTION CH1 CH1 N.C. ESD Channel ESD Channel No connect PIN 1 2 3 4 5 6 7 8 MSOP-8 PACKAGE PIN DESCRIPTIONS NAME DESCRIPTION CH1 N.C. N.C. CH3 N.C. CH4 CH2 N.C. ESD Channel No connect No connect ESD Channel No connect ESD Channel ESD Channel No connect Ordering Information PART NUMBERING INFORMATION Pins 3 8 Package SOT23 MSOP Ordering Part Number1 CM1214-01ST CM1214-02MS Part Marking RF1 RF2 Note 1: Parts are shipped in Tape & Reel form unless otherwise specified. (c) 2003 California Micro Devices Corp. All rights reserved. 2 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 L Tel: 408.263.3214 L Fax: 408.263.7846 L www.calmicro.com 06/20/03 PRELIMINARY CM1214 Specifications ABSOLUTE MAXIMUM RATINGS PARAMETER DC Voltage between I/O pins Diode Forward DC Current (Note 1) Operating Temperature Range Storage Temperature Range Package Power Rating SOT23-3 Package (CM1214-01ST) MSOP8 Package (CM1214-02MS) Note 1: Pin 3 unconnected for all tests (CM1214-01ST only). RATING 7 8 -40 to +85 -65 to +150 225 400 UNITS V mA C C mW mW STANDARD OPERATING CONDITIONS PARAMETER Operating Temperature Range RATING -40 to +85 UNITS C ELECTRICAL OPERATING CHARACTERISTICS (NOTE 1) SYMBOL VST VESD PARAMETER Standoff Voltage ESD Voltage Protection Peak discharge voltage between I/O pins a) Contact discharge per IEC 61000-4-2 standard Channel Leakage Current Channel Clamp Voltage Positive Transients Negative Transients Dynamic Resistance Matching I/O to GND Capacitance Channel Input Capacitance Voltage between I/O pins = 0V Voltage between I/O pins = 5V Note 1: Note 2: Note 3: Note 4: Note 5: CONDITIONS I=10A Notes 2, 3 and 4 MIN TYP +7 MAX UNITS V 8 + TA=25C, 5.5V between I/O pins At 8kV ESD HBM; Notes 2, 4 & 5 9.0 -9.0 I = 1A, TA=25C; Note 6 applies 1.5 0.02 Measured at 1 MHz between I/O pins; Note 2 applies 0.5 0.5 0.8 0.8 1.2 1.2 +0.1 +1.0 kV A V V pF ILEAK VCL RDYN CIN CIN pF pF All parameters specified at TA = -40C to +85C unless otherwise noted. These parameters guaranteed by design and characterization. Standard IEC 61000-4-2 with CDischarge = 150pF, RDischarge = 330,. From I/O pin with other I/O pin grounded. Human Body Model per MIL-STD-883, Method 3015, CDischarge = 100pF, RDischarge = 1.5K . (c) 2003 California Micro Devices Corp. All rights reserved. 06/20/03 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 L Tel: 408.263.3214 L Fax: 408.263.7846 L www.calmicro.com 3 PRELIMINARY CM1214 Performance Information Typical Capacitance Characteristics VS. Voltage Figure 1 illustrates how the loading capacitance remains mainly flat across the voltage range from 0V to 5V, which is the voltage between I/O pins. Typical Voltage Current (VI) Characteristics (high current, pulse condition) Figure 2 shows how the CM1214 experiences a symmetrical I/V curve, without any snapback or trigger voltage. The curve shows only one polarity. Capacitance vs. Voltage (measured at 1MHz) 1.5 1.4 2 Capacitance [pF] 1.3 1.1 1 0.9 0.8 0.7 0.6 0.5 0 1 2 3 4 5 Current [A] 1.2 1.5 1 0.5 0 0 2 4 6 8 10 12 Voltage [V] Voltage [V] Figure 1. CM1214 Capacitance VS. Voltage Typical Voltage Current (VI) Characteristics (low current) Figure 2 shows how the CM1214 experiences a symmetrical I/V curve, without any snapback or trigger voltage. It gradually starts to leak at about 6V and clamps above 7V. Figure 3. CM1214 VI Characteristics, Low Current, Pulse (clamping) Condition 10 9 8 7 6 5 4 3 2 1 0 0 1 2 3 4 5 6 7 8 Current [uA] Voltage [V] Figure 2. CM1214 VI Characteristics, Low Current (c) 2003 California Micro Devices Corp. All rights reserved. 4 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 L Tel: 408.263.3214 L Fax: 408.263.7846 L www.calmicro.com 06/20/03 PRELIMINARY CM1214 Application Information The CM1214-01ST protects a single bipolar signal line, such as is found in RF circuits. One I/O pin (pin 1 for example) is connected to the signal line to be protected, and the other I/O pin is tied to GND. It is important to have a solid ground connection in order to reduce the clamping voltage. Pin 3 of the 3-lead SOT23 must be left open (not connected on the PCB). The CM1214-02MS protects two bipolar lines, such as for Gbit Ethernet. The PCB traces connect across underneath the package to the corresponding pins, i.e., pin 1 to pin 8 etc. Any disturbance on the line above or below the standoff voltage is clamped. RF ANTENNA LNA SIGNAL LINE SWITCH 1 3 2 C L Not connected PA GND 3-Lead SOT23-3 Figure 4. Typical Application - RF Switch and Amplifier Protection, CM1214-01ST in 3-lead SOT23 TX+ I/O1 I/O2 I/O3 I/O4 TXRX+ RX- CM1214-02MS Figure 5. Typical Application - Ethernet Protection, CM1214-02MS in 8-lead MSOP (c) 2003 California Micro Devices Corp. All rights reserved. 06/20/03 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 L Tel: 408.263.3214 L Fax: 408.263.7846 L www.calmicro.com 5 PRELIMINARY CM1214 Mechanical Details The CM1214 is available in SOT23-3 and MSOP-8 packages.The various package drawings are presented below. SOT23-3 Mechanical Specifications Dimensions for CM1214-01ST devices packaged in 3pin SOT23 packages are presented below. For complete information on the SOT23-3 package, see the California Micro Devices SOT23 Package Information document. Mechanical Package Diagrams TOP VIEW b 3 PACKAGE DIMENSIONS Package Pins Dimensions A A1 b c D E E1 e e1 L L1 # per tape and reel Millimeters Min 0.89 0.01 0.30 0.08 2.80 2.10 1.20 Max 1.12 0.10 0.50 0.20 3.04 2.64 1.40 Min 0.0350 0.0004 0.0118 0.0031 0.1102 0.0827 0.0472 SOT23-3 (JEDEC name is TO-236) 3 Inches Max 0.0441 0.0039 0.0197 0.0079 0.1197 0.1039 0.0551 1 RF1 2 E1 E e1 e SIDE VIEW D A1 A 0.95 BSC 1.90 BSC 0.40 0.60 0.54 REF 0.0374 BSC 0.0748 BSC 0.0157 0.0236 c L1 L 0.0213 REF 3000 pieces END VIEW Controlling dimension: millimeters Package Dimensions for SOT23-3. (c) 2003 California Micro Devices Corp. All rights reserved. 6 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 L Tel: 408.263.3214 L Fax: 408.263.7846 L www.calmicro.com 06/20/03 PRELIMINARY CM1214 Mechanical Details MSOP-8 Mechanical Specifications: CM1214-02MS devices are packaged in 8-pin MSOP packages. Dimensions are presented below. For complete information on the MSOP-8 package, see the California Micro Devices MSOP Package Information document. Mechanical Package Diagrams TOP VIEW D 8 7 6 5 PACKAGE DIMENSIONS Package Pins Dimensions A A1 B C D E e H L # per tube # per tape and reel 2.90 2.90 4.78 0.52 Millimeters Min 0.87 0.05 0.18 3.10 3.10 4.98 0.54 0.114 0.114 0.188 0.017 Max 1.17 0.25 Min 0.034 0.002 MSOP 8 Inches Max 0.046 0.010 0.007 0.122 0.122 0.196 0.025 SEATING PLANE H RF2 Pin 1 Marking E 1 2 3 4 SIDE VIEW 0.30 (typ) 0.012 (typ) A A1 B e END VIEW 0.65 BSC 0.025 BSC 80 pieces* 4000 pieces Controlling dimension: inches C L Package Dimensions for MSOP-8 * This is an approximate amount which may vary. (c) 2003 California Micro Devices Corp. All rights reserved. 06/20/03 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 L Tel: 408.263.3214 L Fax: 408.263.7846 L www.calmicro.com 7 |
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