PRELIMINARY CM1214 1 and 2 Channel PicoGuardTM AC Signal ESD Protector Features 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 low sub-1pF loading capacitance makes the CM121401DF/DE and CM1214-01ST/SO ideal for protecting high-speed interfaces including RF switches and amplifiers. The CM1214-02MS/MR is ideal for dual high-speed signal pairs used in Gigabit Ethernet, ADSL, etc. The CM1214-02MS/MR can also be used for higher transmit voltage applications by connecting the two channels in series. • • • • • • • Single channel ESD protection for an AC signal up to ±5V for 0.25W transmit power Connect 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 Can withstand over 1000 ESD strikes at 8kV DFN-3, SOT23-3 and MSOP-8 package options Lead-free versions available Applications • • • • RF switch and amplifier protection RF modules and RF IC protection Wireless handsets and WLAN High-speed AC signals for Gbit Ethernet, etc. The CM1214-01DF/DE and the CM1214-01ST/SO are single channel ESD protectors available in a 3-lead DFN-3 and SOT23-3 packages respectively. The CM1214-01DF/DE is housed in a very small form factor DFN package that provides up to 20% and 32% board space savings when it is used in place of SC70 and SOT23 packages. The CM1214-02MS/MR is a dual channel ESD protector and is available in an 8lead MSOP-8 package. All three devices are available with optional lead-free finishing. Electrical Schematics CH1 CH1 CH3 CH2 CH2 CH4 CM1214-01ST/SO CM1214-01DF/DE CM1214-02MS/MR © 2005 California Micro Devices Corp. All rights reserved. 03/25/05 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 ● Tel: 408.263.3214 ● Fax: 408.263.7846 ● www.calmicro.com 1 PRELIMINARY CM1214 PACKAGE / PINOUT DIAGRAMS Top View 3 1 CH1 3 2 CH1 N.C. 2 CH2 DFN-3 CH1 1 N.C. 2 N.C. 3 CH3 4 SOT23-3 RF2/ RF2R RF1/ RF1R 1 CH2 RD / RG N.C. Top View Top View 8 N.C. 7 CH2 6 CH4 5 N.C. MSOP-8 Note: These drawings are not to scale. SOT23-3 PACKAGE PIN DESCRIPTIONS PIN MSOP-8 PACKAGE PIN DESCRIPTIONS NAME DESCRIPTION 1 CH1 ESD Channel 2 CH2 ESD Channel 3 N.C. No connect PIN CH1 ESD Channel 2 N.C. No connect 3 N.C. No connect 4 CH3 ESD Channel 5 N.C. No connect No connect 6 CH4 ESD Channel CH2 ESD Channel N.C. No connect DFN-3 PACKAGE PIN DESCRIPTIONS PIN 1 NAME DESCRIPTION N.C. NAME DESCRIPTION 1 2 CH1 ESD Channel 7 3 CH2 ESD Channel 8 Ordering Information PART NUMBERING INFORMATION Standard Finish Lead-free Finish Pins Package Ordering Part Number1 Part Marking Ordering Part Number1 Part Marking 3 DFN CM1214-01DF RD CM1214-01DE RG 3 SOT23 CM1214-01ST RF1 CM1214-01SO RF1R 8 MSOP CM1214-02MS RF2 CM1214-02MR RF2R Note 1: Parts are shipped in Tape & Reel form unless otherwise specified. © 2005 California Micro Devices Corp. All rights reserved. 2 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 ● Tel: 408.263.3214 ● Fax: 408.263.7846 ● www.calmicro.com 03/25/05 PRELIMINARY CM1214 Specifications ABSOLUTE MAXIMUM RATINGS PARAMETER RATING UNITS 7 V Operating Temperature Range -40 to +85 °C Storage Temperature Range -65 to +150 °C TBD 225 400 mW mW mW RATING UNITS -40 to +85 °C DC Voltage between CH pins Package Power Rating DFN-3 Package (CM1214-01DF/DE) SOT23-3 Package (CM1214-01ST/SO) MSOP8 Package (CM1214-02MS/MR) STANDARD OPERATING CONDITIONS PARAMETER Operating Temperature Range ELECTRICAL OPERATING CHARACTERISTICS (SEE NOTE 1) SYMBOL PARAMETER CONDITIONS Standoff Voltage I=10µA ESD Voltage Protection Peak discharge voltage between CH pins a) Contact discharge per IEC 61000-4-2 standard Notes 2, 3 and 4 ILEAK Channel Leakage Current TA=25°C, 5.5V between CH pins ±0.1 RDYN Dynamic Resistance I = 1A, TA=25°C; 1.5 Channel Input Capacitance Measured at 1 MHz between CH pins; Note 2 applies VST VESD CIN MIN MAX UNITS ±7 V ±8 Voltage between CH pins = 0V Voltage between CH pins = 5V Note 1: Note 2: Note 3: Note 4: Note 5: TYP 0.5 0.5 kV 0.8 0.8 ±1.0 µA Ω 1.2 1.2 pF pF All parameters specified at TA = -40°C to +85°C unless otherwise noted. These parameters guaranteed by design and characterization. Standard IEC 61000-4-2 with CDischarge = 150pF, RDischarge = 330Ω,. From CH pin with other CH pin grounded. No Connect pins are left open for all tests. © 2005 California Micro Devices Corp. All rights reserved. 03/25/05 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 ● Tel: 408.263.3214 ● Fax: 408.263.7846 ● 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, the voltage between CH pins. Typical Voltage-Current (VI) Characteristics (high current, pulse condition) Figure 3 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) 2 1.5 1.4 Capacitance [pF] 1.3 1.5 Current [A] 1.2 1.1 1 0.9 0.8 1 0.5 0.7 0.6 0.5 0 1 2 3 4 5 0 0 Voltage [V] 2 4 6 8 10 12 Voltage [V] Figure 1. CM1214 Capacitance vs. Voltage Figure 3. CM1214 VI Characteristics, Low Current, Pulse (clamping) Condition 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 turn on at about 6V and clamps above 7V. 10 9 Current [uA] 8 7 6 5 4 3 2 1 0 0 1 2 3 4 5 6 7 8 Voltage [V] Figure 2. CM1214 VI Characteristics, Low Current © 2005 California Micro Devices Corp. All rights reserved. 4 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 ● Tel: 408.263.3214 ● Fax: 408.263.7846 ● www.calmicro.com 03/25/05 PRELIMINARY CM1214 Performance Information (cont’d) Typical Filter Performance (nominal conditions unless specified otherwise, 50 Ohm Environment) Figure 4. Insertion Loss vs. Frequency (0V DC Bias) Figure 5. Insertion Loss vs. Frequency (2.5V DC Bias) © 2005 California Micro Devices Corp. All rights reserved. 03/25/05 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 ● Tel: 408.263.3214 ● Fax: 408.263.7846 ● www.calmicro.com 5 PRELIMINARY CM1214 Application Information The CM1214-01ST/SO and the CM1214-01DF/DE protect 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 (Pin 1 of the 3-lead DFN) must be left open (not connected on the PCB). The CM1214-02MS/MR protects two bipolar lines, such as for Gbit Ethernet. The PCB traces underneath the package connect across 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 C L SWITCH ESD PA N.C. ESD GND 3-Lead DFN or SOT23-3 Figure 6. Typical Application - RF Switch and Amplifier Protection, CM1214-01ST/SO/DF/DE in 3-lead DFN or SOT23 TX+ I/O1 I/O2 TXRX+ I/O3 I/O4 RX- CM1214-02MS Figure 7. Typical Application - Ethernet Protection, CM1214-02MS/MR in 8-lead MSOP © 2005 California Micro Devices Corp. All rights reserved. 6 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 ● Tel: 408.263.3214 ● Fax: 408.263.7846 ● www.calmicro.com 03/25/05 PRELIMINARY CM1214 Application Information (cont’d) IEEE1394 1 2 PHY 3 LLC 4 GALV iso CM1214-02 CM1214-02 GND Keep the ESD devices on the PHY side of the galvanic isolation and inside the VCC domain of the PHY controller. Figure 8. Typical Application - IEEE1394 Protection, CM1214-02MS/MR in 8-lead MSOP © 2005 California Micro Devices Corp. All rights reserved. 03/25/05 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 ● Tel: 408.263.3214 ● Fax: 408.263.7846 ● www.calmicro.com 7 PRELIMINARY CM1214 Mechanical Details The CM1214 is supplied in DFN-03, SOT23-3 and MSOP-8 packages.Dimensions are presented below. SOT23-3 Mechanical Specifications Dimensions for CM1214-01ST/SO supplied in a 3-pin SOT23 package are presented below. Mechanical Package Diagrams For complete information on the SOT23-3, see the California Micro Devices SOT23 Package Information document. TOP VIEW b 3 PACKAGE DIMENSIONS E1 E Package SOT23-3 (JEDEC name is TO-236) Pins 3 Dimensions Millimeters Inches Min Max Min Max A 0.89 1.12 0.0350 0.0441 A1 0.01 0.10 0.0004 0.0039 b 0.30 0.50 0.0118 0.0197 c 0.08 0.20 0.0031 0.0079 D 2.80 3.04 0.1102 0.1197 E 2.10 2.64 0.0827 0.1039 E1 1.20 1.40 0.0472 0.0551 e 0.95 BSC 0.0374 BSC e1 1.90 BSC 0.0748 BSC L L1 # per tape and reel 0.40 0.60 0.54 REF 1 0.0157 2 e1 e SIDE VIEW D A1 A END VIEW 0.0236 0.0213 REF 3000 pieces c L1 L Controlling dimension: millimeters Package Dimensions for SOT23-3. © 2005 California Micro Devices Corp. All rights reserved. 8 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 ● Tel: 408.263.3214 ● Fax: 408.263.7846 ● www.calmicro.com 03/25/05 PRELIMINARY CM1214 Mechanical Details (cont’d) MSOP-8 Mechanical Specifications: The CM1214-02MS/MR is supplied in an 8-pin MSOP package. Dimensions are presented below. Mechanical Package Diagrams TOP VIEW For complete information on the MSOP-8 package, see the California Micro Devices MSOP Package Information document. D 8 PACKAGE DIMENSIONS Package MSOP Pins 8 Dimensions Millimeters 6 5 E H Pin 1 Marking Inches 1 Min Max Min Max A 0.87 1.17 0.034 0.046 A1 0.05 0.25 0.002 0.010 B 0.30 (typ) 0.012 (typ) C 0.18 0.007 2.90 3.10 0.114 0.122 E 2.90 3.10 0.114 0.122 0.65 BSC 2 3 4 SIDE VIEW A D e 7 A1 SEATING PLANE B e 0.025 BSC H 4.78 4.98 0.188 0.196 L 0.52 0.54 0.017 0.025 # per tube 80 pieces* # per tape and reel 4000 pieces END VIEW C L Controlling dimension: inches Package Dimensions for MSOP-8 * This is an approximate amount which may vary. © 2005 California Micro Devices Corp. All rights reserved. 03/25/05 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 ● Tel: 408.263.3214 ● Fax: 408.263.7846 ● www.calmicro.com 9 PRELIMINARY CM1214 Mechanical Details (cont’d) DFN-03 Mechanical Specifications The CM1214-01DE/DF is supplied in a 3-lead DFN package. Dimensions are presented below. Mechanical Package Diagrams For complete information, see the California Micro Devices DFN Package Information document. TOP VIEW D 3 2 PACKAGE DIMENSIONS DFN JEDEC No. MO-229 (Var. VCCC-3F)✝ Leads 3 Dim. E Package Millimeters Pin 1 Marking Inches Min Nom Max Min Nom Max A 0.800 0.900 1.00 0.031 0.035 0.039 A1 0.000 0.025 0.050 0.000 0.001 0.002 A2 0.650 0.700 0.750 0.026 0.028 0.030 A3 0.150 0.200 0.250 0.006 0.008 0.010 b 0.180 0.200 0.280 0.007 0.009 0.011 D D2 2.00 BSC 1.220 E E2 1.320 0.048 0.990 0.031 2.00 BSC 0.790 e 0.890 L2 SIDE VIEW 0.079 BSC 1.420 0.051 0.10 C 0.056 0.079 BSC 0.65 0.035 1 L2 0.08 C 0.040 A1 0.020 K 0.20 L 0.200 0.290 0.450 0.008 0.011 0.018 L1 TBD TBD TBD TBD TBD TBD A A3 A2 0.008 0.125 R 0.075 r1 0.075 0.005 L1 1 HEAT SINK SLUG R 0.003 0.17 0.30 0.003 # per tube TBD # per tape and reel 3000 pieces E2 L2 e R1 K Controlling dimension: millimeters 3 8 5 2 D2 ✝ This package is compliant with JEDEC standard MO-229, variation VCCC-3F with exception of the "D2" and "E2" dimensions as called out in the table above and the "r1" dimension which is not specified in the MO-229 standard. L b BOTTOM VIEW 8X 0.10 M CAB Package Dimensions for 3-Lead DFN © 2005 California Micro Devices Corp. All rights reserved. 10 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 ● Tel: 408.263.3214 ● Fax: 408.263.7846 ● www.calmicro.com 03/25/05