View CM1293-08MS_1226731.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

CM1293 2, 4, and 8-Channel Low Capacitance ESD Protection Arrays
Features
* * * * * * * * * 2, 4, and 8 channels of ESD protection Provides ESD protection to IEC61000-4-2 - 8kV contact discharge - 15kV air discharge Low loading capacitance of 2.0pF max. Low clamping voltage Channel I/O to I/O capacitance 1.5pF typical Zener diode protects supply rail and eliminates the need for external by-pass capacitors Each I/O pin can withstand over 1000 ESD strikes Available in SOT, and MSOP packages Lead-free version available
Product Description
The CM1293 family of diode arrays has been designed to provide ESD protection for electronic components or sub-systems requiring minimal capacitive loading. These devices are ideal for protecting systems with high data and clock rates or for circuits requiring low capacitive loading. Each ESD channel consists of a pair of diodes in series which steer the positive or negative ESD current pulse to either the positive (VP) or negative (VN) supply rail. A Zener diode is embedded between VP and VN, offering two advantages. First, it protects the VCC rail against ESD strikes, and second, it eliminates the need for a bypass capacitor that would otherwise be needed for absorbing positive ESD strikes to ground. The CM1293 will protect against ESD pulses up to (15kV air, 8kV contact discharge) per the IEC 61000-4-2 Level 4 standard. This device is particularly well-suited for protecting systems using high-speed ports such as USB2.0, IEEE1394 (Firewire(R), iLinkTM), Serial ATA, DVI, HDMI and corresponding ports in removable storage, digital camcorders, DVD-RW drives and other applications where extremely low loading capacitance with ESD protection are required in a small package footprint. The CM1293 family of devices is available with optional lead-free finishing.
Applications
* * * * DVI ports, HDMI ports in notebooks, set top boxes, digital TVs, LCD displays Serial ATA ports in desktop PCs and hard disk drives PCI Express ports General purpose high-speed data line ESD protection
Electrical Schematics
VP
CH4
VP
CH3
CH8
CH7
VP
CH6
CH5
CH1
CH2
VN
CH1
VN
CH2
CH1
CH2
VN
CH3
CH4
CM1293-02ST/SO CM1293--02SR
CM1293-04ST/SO CM1293-04MS/MR
CM1293-08MS/MR
(c) 2006 California Micro Devices Corp. All rights reserved. 01/26/06
490 N. McCarthy Blvd., Milpitas, CA 95035-5112
Tel: 408.263.3214
Fax: 408.263.7846
www.cmd.com
1
CM1293
PACKAGE / PINOUT DIAGRAMS
Top View
VN
1 4
Top View
VP NC VN
1 2 3 5
Top View
VP
CH1 CH2 CH3 CH4
1 2 3 4 5
10 9 8 7 6
CH8 CH7
VP
D032 / D033
D036
D038 / D039
CH1
2
3
CH2
CH1
4
CH6 CH5
CH2
VN
4-Lead SOT143-4
5-Lead SOT23-5
Top View
CH1 VN CH2
1 2 3 6
Top View
CH4 VP CH3
10-Lead MSOP-10
NC CH4
VN
CH1 NC
VP
1 2 3 4 5
10 9 8 7 6
6-Lead SOT23-6
Note: These drawings are not to scale.
PIN DESCRIPTIONS 2-CHANNEL, 4-LEAD SOT143-4 PACKAGE PIN 1 2 3 4 NAME VN CH1 CH2 VP TYPE GND I/O I/O PWR PIN 1 2 3 4 PIN 1 2 3 4 5 6 7 8 9 10
2-CHANNEL, 5-LEAD SOT23-5 PACKAGE PIN 1 2 3 4 5 NAME NC VN CH1 CH2 VP GND I/O I/O PWR TYPE DESCRIPTION No connect Negative voltage supply rail ESD Channel ESD Channel Positive voltage supply rail
4-CHANNEL, 6-LEAD SOT23-6 PACKAGE PIN 1 2 3 4 5 6 5 6 NAME CH1 VN CH2 CH3 VP CH4 VP CH4 TYPE I/O GND I/O I/O PWR I/O PWR I/O DESCRIPTION ESD Channel Negative voltage supply rail ESD Channel ESD Channel Positive voltage supply rail ESD Channel Positive voltage supply rail ESD Channel
(c) 2006 California Micro Devices Corp. All rights reserved.
D034 / D035
D040 / D041
5 4
CH2 NC
NC CH3
10-Lead MSOP-10
4-CHANNEL, 10-LEAD MSOP-10 PACKAGE NAME CH1 NC VP CH2 NC CH3 NC VN CH4 NC GND I/O I/O PWR I/O TYPE I/O DESCRIPTION ESD Channel No connect Positive voltage supply rail ESD Channel No connect ESD Channel No connect Negative voltage supply rail ESD Channel No connect 8-CHANNEL, 10-LEAD MSOP-10 PACKAGE PIN 1 2 3 4 5 6 7 8 9 10 NAME CH1 CH2 CH3 CH4 VN CH5 CH6 VN CH7 CH8 TYPE I/O I/O I/O I/O PWR I/O I/O GND I/O I/O DESCRIPTION ESD Channel ESD Channel ESD Channel ESD Channel Positive voltage supply rail ESD Channel ESD Channel Negative voltage supply rail ESD Channel ESD Channel
2
490 N. McCarthy Blvd., Milpitas, CA 95035-5112
Tel: 408.263.3214
Fax: 408.263.7846
www.cmd.com
01/26/06
CM1293
Ordering Information
PART NUMBERING INFORMATION
Standard Finish # of Channels 2 2 4 4 8 Leads 4 5 6 10 10 Package SOT143-4 SOT23-5 SOT23-6 MSOP-10 MSOP-10 CM1293-02ST CM1293-04ST CM1293-04MS CM1293-08MS D032 D034 D040 D038 Ordering Part Number1 Part Marking Lead-free Finish Ordering Part Number1 CM1293-02SR CM1293-02SO CM1293-04SO CM1293-04MR CM1293-08MR Part Marking D036 D033 D035 D041 D039
Note 1: Parts are shipped in Tape & Reel form unless otherwise specified.
Specifications
ABSOLUTE MAXIMUM RATINGS
PARAMETER Operating Supply Voltage (VP - VN) Operating Temperature Range Storage Temperature Range DC Voltage at any channel input RATING 6.0 -40 to +85 -65 to +150 (VN - 0.5) to (VP + 0.5) UNITS V C C V
STANDARD OPERATING CONDITIONS
PARAMETER Operating Temperature Range Package Power Rating SOT143-4 Package (CM1293-02SR) SOT23-5 Package (CM1293-02ST/SO) SOT23-6 Package (CM1293-04ST/SO) MSOP-10 Package (CM1293-04MS/MR) MSOP-10 Package (CM1293-08MS/MR) RATING -40 to +85 225 225 225 400 400 UNITS C mW mW mW mW mW
(c) 2006 California Micro Devices Corp. All rights reserved. 01/26/06
490 N. McCarthy Blvd., Milpitas, CA 95035-5112
Tel: 408.263.3214
Fax: 408.263.7846
www.cmd.com
3
CM1293
Specifications (cont'd)
ELECTRICAL OPERATING CHARACTERISTICS1
SYMBOL PARAMETER VP IP VF Operating Supply Voltage (VP-VN) Operating Supply Current Diode Forward Voltage Top Diode Bottom Diode Channel Leakage Current Channel Input Capacitance Channel I/O to I/O capacitance ESD Protection Peak Discharge Voltage at any channel input, in system a) Contact discharge per IEC 61000-4-2 standard b) Human Body Model, MIL-STD-883, Method 3015 Channel Clamp Voltage Positive Transients Negative Transients Dynamic Resistance Positive Transients Negative Transients (VP-VN)=3.3V IF = 8mA; TA=25C 0.60 0.60 0.80 0.80 0.1 CONDITIONS MIN TYP 3.3 MAX 5.5 8.0 0.95 0.95 1.0 2.0 1.5 UNITS V A V V A pF pF
ILEAK CIN
TA=25C; VP=5V, VN=0V At 1 MHz, VP=3.3V, VN=0V, VIN=1.65V; Note 2
CIO
VESD
Notes 2, 4 & 5; TA=25C Notes 2, 3 & 5; TA=25C
8 15
kV kV
VCL
At 8kV ESD HBM; TA=25C; Notes 2 & 3
+9.0 -9.0 1.2 0.6
V V
RDYN
TA=25C; Notes 5 & 6
Note 1: Note 2: Note 3: Note 4: Note 5: Note 6:
All parameters specified at TA = -40C to +85C unless otherwise noted. These parameters guaranteed by design and characterization. Human Body Model per MIL-STD-883, Method 3015, CDischarge = 100pF, RDischarge = 1.5K, VP = 3.3V, VN grounded. Standard IEC 61000-4-2 with CDischarge = 150pF, RDischarge = 330, VP = 3.3V, VN grounded. These measurements performed with no external capacitor on VP. Measured under pulsed conditions, pulse width = 0.7mS, maximum current = 1.5A.
(c) 2006 California Micro Devices Corp. All rights reserved.
4
490 N. McCarthy Blvd., Milpitas, CA 95035-5112
Tel: 408.263.3214
Fax: 408.263.7846
www.cmd.com
01/26/06
CM1293
Performance Information (Cont'd)
Typical Filter Performance (nominal conditions unless specified otherwise, 50 Ohm Environment)
Figure 1. Insertion Loss (S21) VS. Frequency (0V DC Bias, VP=3.3V)
Figure 2. Insertion Loss (S21) VS. Frequency (2.5V DC Bias, VP=3.3V)
(c) 2006 California Micro Devices Corp. All rights reserved. 01/26/06
490 N. McCarthy Blvd., Milpitas, CA 95035-5112
Tel: 408.263.3214
Fax: 408.263.7846
www.cmd.com
5
CM1293
Application Information
Design Considerations
In order to realize the maximum protection against ESD pulses, care must be taken in the PCB layout to minimize parasitic series inductances on the Supply/ Ground rails as well as the signal trace segment between the signal input (typically a connector) and the ESD protection device. Refer to Figure 3, which illustrates an example of a positive ESD pulse striking an input channel. The parasitic series inductance back to the power supply is represented by L1 and L2. The voltage VCL on the line being protected is:
VCL = Fwd voltage drop of D1 + VSUPPLY + L1 x d(IESD) / dt + L2 x d(IESD) / dt
inductance L2 on VCL by clamping VP at the breakdown voltage of the Zener diode. However, for the lowest possible VCL, especially when VP is biased at a voltage significantly below the Zener breakdown voltage, it is recommended that a 0.22F ceramic chip capacitor be connected between VP and the ground plane. As a general rule, the ESD Protection Array should be located as close as possible to the point of entry of expected electrostatic discharges. The power supply bypass capacitor mentioned above should be as close to the VP pin of the Protection Array as possible, with minimum PCB trace lengths to the power supply, ground planes and between the signal input and the ESD device to minimize stray series inductance.
where IESD is the ESD current pulse, and VSUPPLY is the positive supply voltage. An ESD current pulse can rise from zero to its peak value in a very short time. As an example, a level 4 contact discharge per the IEC61000-4-2 standard results in a current pulse that rises from zero to 30 Amps in 1ns. Here d(IESD)/dt can be approximated by IESD/t, or 30/(1x10-9). So just 10nH of series inductance (L1 and L2 combined) will lead to a 300V increment in VCL!
Additional Information
See also California Micro Devices Application Note AP209, "Design Considerations for ESD Protection", in the Applications section at www.calmicro.com.
Similarly for negative ESD pulses, parasitic series inductance from the VN pin to the ground rail will lead to drastically increased negative voltage on the line being protected. The CM1293 has an integrated Zener diode between VP and VN. This greatly reduces the effect of supply rail
L2
VP
POSITIVE SUPPLY RAIL
VCC
PATH OF ESD CURRENT PULSE IESD
0.22F
D1
ONE CHANNEL
L1
CHANNEL INPUT
25A
LINE BEING PROTECTED
SYSTEM OR CIRCUITRY BEING PROTECTED
D2 OF
CM1213
0A
VCL
GROUND RAIL
VN
CHASSIS GROUND
Figure 3. Application of Positive ESD Pulse between Input Channel and Ground
(c) 2006 California Micro Devices Corp. All rights reserved.
6
490 N. McCarthy Blvd., Milpitas, CA 95035-5112
Tel: 408.263.3214
Fax: 408.263.7846
www.cmd.com
01/26/06
CM1293
Mechanical Details
SOT143 Mechanical Specifications Dimensions for CM1293-02SR devices supplied in 4pin SOT143 packages are presented below. For complete information on the SOT143, see the California Micro Devices SOT143 Package Information document.
4
Mechanical Package Diagrams
TOP VIEW e
3
PACKAGE DIMENSIONS
Package Pins Dimensions A A1 b b2 c D E E1 e e1 L L1 # per tape and reel Millimeters Min 0.80 0.05 0.30 0.76 0.08 2.80 2.10 1.20 Max 1.22 0.15 0.50 0.89 0.20 3.04 2.64 1.40 Min 0.031 0.002 0.012 0.030 0.003 0.110 0.082 0.047 SOT143 4 Inches Max 0.048 0.006 0.019 0.035 0.008 0.119 0.103 0.055 END VIEW b2 b SIDE VIEW D e1
1 2
E1 E
A
A1
1.92 BSC 0.20 BSC 0.4 0.6 0.54 REF
0.075 BSC 0.008 BSC 0.016 0.024 c 0.021 REF 3000 pieces
Controlling dimension: millimeters
L1
L
Package Dimensions for SOT143.
(c) 2006 California Micro Devices Corp. All rights reserved. 01/26/06
490 N. McCarthy Blvd., Milpitas, CA 95035-5112
Tel: 408.263.3214
Fax: 408.263.7846
www.cmd.com
7
CM1293
Mechanical Details (cont'd)
SOT23-5 Mechanical Specifications Dimensions for CM1293-02ST/SO devices packaged in 5-pin SOT23 packages are presented below. For complete information on the SOT23-5 package, see the California Micro Devices SOT23 Package Information document.
5
Mechanical Package Diagrams
TOP VIEW e1 e
4
PACKAGE DIMENSIONS
Package Pins Dimensions A A1 b c D E E1 e e1 L L1 # per tape and reel Millimeters Min -0.00 0.30 0.08 2.75 2.60 1.45 Max 1.45 0.15 0.50 0.22 3.05 3.00 1.75 Min -0.0000 0.0118 0.0031 0.1083 0.1024 0.0571 SOT23-5 (JEDEC name is MO-178) 5 Inches Max 0.0571 0.0059 0.0197 0.0087 0.1201 0.1181 0.0689 END VIEW SIDE VIEW D
1 2 3
E1 E
b
A
A1
0.95 BSC 1.90 BSC 0.30 0.60 0.60 REF
0.0374 BSC 0.0748 BSC 0.0118 0.0236 c L1 L 0.0236 REF 3000 pieces
Controlling dimension: millimeters
(c) 2006 California Micro Devices Corp. All rights reserved.
8
490 N. McCarthy Blvd., Milpitas, CA 95035-5112
Tel: 408.263.3214
Fax: 408.263.7846
www.cmd.com
01/26/06
CM1293
Mechanical Details (cont'd)
SOT23-6 Mechanical Specifications CM1293-04ST/SO devices are packaged in 6-pin SOT23 packages. Dimensions are presented below. For complete information on the SOT23-6 package, see the California Micro Devices SOT23 Package Information document.
6
Mechanical Package Diagrams
TOP VIEW
e1
5
e
4
PACKAGE DIMENSIONS
Package Pins Dimensions A A1 b c D E E1 e e1 L L1 # per tape and reel Millimeters Min -0.00 0.30 0.08 2.75 2.60 1.45 Max 1.45 0.15 0.50 0.22 3.05 3.00 1.75 Min -0.0000 0.0118 0.0031 0.1083 0.1024 0.0571 SOT23-6 (JEDEC name is MO-178) 6 Inches Max 0.0571 0.0059 0.0197 0.0087 0.1201 0.1181 0.0689
Pin 1 Marking
E1 E
1 2 3
b
SIDE VIEW
D A
A1
END VIEW
0.95 BSC 1.90 BSC 0.30 0.60 0.60 REF
0.0374 BSC 0.0748 BSC 0.0118 0.0236 c L1 L 0.0236 REF 3000 pieces
Controlling dimension: millimeters
Package Dimensions for SOT23-6.
(c) 2006 California Micro Devices Corp. All rights reserved. 01/26/06
490 N. McCarthy Blvd., Milpitas, CA 95035-5112
Tel: 408.263.3214
Fax: 408.263.7846
www.cmd.com
9
CM1293
Mechanical Details (cont'd)
MSOP-10 Mechanical Specifications CM1293-04MS/MR and CM1293-08MS/MR devices are packaged in 10-pin MSOP packages. Dimensions are presented below. For complete information on the MSOP-10 package, see the California Micro Devices MSOP Package Information document. Mechanical Package Diagrams
TOP VIEW
D
10 9 8 7 6
PACKAGE DIMENSIONS
Package Pins Dimensions A A1 B C D E e H L # per tape and reel 2.90 2.90 4.76 0.40 Millimeters Min 0.75 0.05 0.18 0.18 3.10 3.10 5.00 0.70 4000 Controlling dimension: inches 0.114 0.114 0.187 0.0137 Max 0.95 0.15 0.40 Min 0.028 0.002 0.006 MSOP 10 Inches Max 0.038 0.006 0.016 0.007 0.122 0.122 0.197 0.029
END VIEW 1 2 3 4 5
H
E
Pin 1 Marking
SIDE VIEW
A
SEATING PLANE
0.50 BSC
0.0196 BSC
A1 B e
C
L Package Dimensions for MSOP-10
(c) 2006 California Micro Devices Corp. All rights reserved.
10
490 N. McCarthy Blvd., Milpitas, CA 95035-5112
Tel: 408.263.3214
Fax: 408.263.7846
www.cmd.com
01/26/06

▲Up To Search▲

Price & Availability of CM1293-08MS

	To Download CM1293-08MS Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .