CALMIRCO CM1215-04ST 1-, 2- and 4-channel low capacitance esd array Datasheet

PRELIMINARY
CM1215
1-, 2- and 4-Channel Low Capacitance ESD Arrays
Features
Product Description
•
•
The CM1215 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. The CM1215 will protect
against ESD pulses up to +15kV per the IEC 61000-4-2
standard.
•
•
•
•
•
•
•
1, 2, and 4 channels of ESD protection
Provides +15 kV ESD protection on each channel
per the IEC 61000-4-2 ESD requirements
Channel loading capacitance of 1.6 pF typical
Channel I/O to GND capacitance difference of
0.04pF typical
Mutual capacitance of 0.13pF typical
Minimal capacitance change with temperature and
voltage
Each I/O pin can withstand over 1000 ESD strikes
SOT packages
Lead-free versions available
Applications
•
•
•
•
•
IEEE1394 Firewire® ports at 400Mbps / 800Mbps
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
This device is particularly well-suited for protecting systems using high-speed ports such as USB2.0,
IEEE1394 (Firewire®, iLink™), 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 CM1215 family of devices is available with
optional lead-free finishing.
Simplified Electrical Schematic
VP
CH1
VP
CH1
VN
CM1215-01ST/SO
CH4
VP
CH3
CH1
VN
CH2
CH2
VN
CM1215-02ST/SO
CM1215-02SS/SR
CM1215-04ST/SO
© 2005 California Micro Devices Corp. All rights reserved.
06/30/05
430 N. McCarthy Blvd., Milpitas, CA 95035-5112
●
Tel: 408.263.3214
●
Fax: 408.263.7846
●
www.calmicro.com
1
PRELIMINARY
CM1215
PACKAGE / PINOUT DIAGRAM
Top View
Top View
1
CH1
VN
3
2
CH2
1
VN
2
CH1
3
4-Pin SOT143
3-Pin SOT23-3
5
VP
CH1
1
VN
2
4
CH2
CH2
3
D154 /
E154
CH1
NC
D152 /
E152
VN
2
VP
D152 /
E152
D151 /
E151
3
VP
4
1
Top View
Top View
6
CH4
5
VP
4
CH3
6-pin SOT23-6
5-Lead SOT23-5
Note: These drawings are not to scale.
Pin Configuration
PACKAGE PIN DESCRIPTIONS
SOT23-3
SOT143
SOT23-5
SOT23-6
PIN NO.
PIN NO.
PIN NO.
PIN NO.
TYPE
DESCRIPTION
CH1
1
2
3
1
I/O
ESD Channel
VN
3
1
2
2
GND
Negative voltage supply
rail
CH2
−
3
4
3
I/O
ESD Channel
CH3
−
−
−
4
I/O
ESD Channel
VP
2
4
5
5
PWR
Positive voltage supply rail
CH4
−
−
−
6
I/O
ESD Channel
N/C
−
−
1
−
−
No Connection
PIN
NAMER
Ordering Information
PART NUMBERING INFORMATION
Standard Finish
Lead-free Finish
Pins
Package
Ordering Part
Number1
Part Marking
Ordering Part
Number1
Part Marking
3
SOT23-3
CM1215-01ST
D151
CM1215-01SO
E151
4
SOT143
CM1215-02SS
D152
CM1215-02SR
E152
5
SOT23-5
CM1215-02ST
D152
CM1215-02SO
E152
6
SOT23-6
CM1215-04ST
D154
CM1215-04SO
E154
© 2005 California Micro Devices Corp. All rights reserved.
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430 N. McCarthy Blvd., Milpitas, CA 95035-5112
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Tel: 408.263.3214
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Fax: 408.263.7846
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06/30/05
PRELIMINARY
CM1215
Specifications
ABSOLUTE MAXIMUM RATINGS
PARAMETER
RATING
UNITS
Operating Supply Voltage (VP-VN)
6
V
Diode Forward DC Current (Note 1)
20
mA
(VN-0.5) to (VP+0.5)
V
Ambient
-40 to +85
°C
Junction
-40 to +125
°C
Storage Temperature Range
-40 to +150
°C
DC Voltage at any Channel Input
Operating Temperature Range
STANDARD OPERATING CONDITIONS
PARAMETER
Temperature Range (Ambient)
Package Power Rating
SOT23-3 Package (CM1215-01ST/SO)
SOT143 Package (CM1215-02SS/SR)
SOT23-5 Package (CM1215-02ST/SO)
SOT23-6 Package (CM1215-04ST/SO)
RATING
UNITS
-40 to +85
°C
225
225
225
225
mW
mW
mW
mW
© 2005 California Micro Devices Corp. All rights reserved.
06/30/05
430 N. McCarthy Blvd., Milpitas, CA 95035-5112
●
Tel: 408.263.3214
●
Fax: 408.263.7846
●
www.calmicro.com
3
PRELIMINARY
CM1215
Specifications (cont’d)
ELECTRICAL OPERATING CHARACTERISTICS NOTE 1
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNIT
3.3
5.5
V
8
μA
0.8
0.8
0.95
0.95
V
V
VP
Operating Supply Voltage (VP-VN)
IP
Operating Supply Current
(VP-VN) = 3.3V
VF
Diode Forward Voltage
Top Diode
Bottom Diode
IF = 20mA; TA = 25°C
Channel Leakage Current
TA = 25°C; VP = 5V,
VN = 0V
±0.1
±1.0
μA
Channel Input Capacitance
At 1 MHz, VP = 3.3V,
VN = 0V, VIN = 1.65V;
Note2
1.6
2.0
pF
Channel I/O to GND Capacitance
Difference
Note 2
0.04
pF
Mutual Capacitance
(VP-VN) = 3.3V; Note 2
0.13
pF
ESD Protection
Peak Discharge Voltage at any
channel input, in system, contact
discharge per IEC 61000-4-2
standard
Notes 2, 3, and 4;
TA = 25°C
Channel Clamp Voltage
Positive Transients
Negative Transients
IPP = 1A, tP = 8/20μS;
TA=25°C; Notes 2
Dynamic Resistance
Positive transients
Negative transients
IPP = 1A, tP = 8/20μS;
TA = 25°C;
Notes 2
ILEAK
CIN
ΔCIN
CMUTUAL
VESD
VCL
RDYN
Note 1:
Note 2:
Note 3:
Note 4:
0.6
0.6
±15
kV
VP+1.5
VN-1.5
V
V
0.4
0.4
Ω
Ω
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, VP = 3.3V, VN grounded.
From I/O pins to VP or VN only. VP bypassed to VN with low ESR 0.2μF ceramic capacitor.
© 2005 California Micro Devices Corp. All rights reserved.
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430 N. McCarthy Blvd., Milpitas, CA 95035-5112
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Tel: 408.263.3214
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PRELIMINARY
CM1215
Performance Characteristics
Capacitance (pF)
Input Channel Capacitance Performance Curve
2.000
1.800
1.600
1.400
1.200
1.000
0.800
0.600
0.400
0.200
0.000
0.00
0.50
1.00
1.50
1.65
2.00
2.50
3.00
Bias Voltage (V)
Figure 1. Typical Variation of CIN vs. VIN
(f = 1MHz, VP= 3.3V, VN = 0V, 0.1μF chip capacitor between VP and VN, TA = 25°C)
Figure 2. Typical Filter Performance (nominal conditions unless
specified otherwise, 50 Ohm Environment
© 2005 California Micro Devices Corp. All rights reserved.
06/30/05
430 N. McCarthy Blvd., Milpitas, CA 95035-5112
●
Tel: 408.263.3214
●
Fax: 408.263.7846
●
www.calmicro.com
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PRELIMINARY
CM1215
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 1, 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
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
d(ESD)/dt, or 30/(1x10-9). So just 10nH of series inductance (L1 and L2 combined) will lead to a 300V increment in VCL!
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.
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.
Additional Information
See also California Micro Devices Application Note
AP-209, “Design Considerations for ESD Protection”,
in the Applications section at www.calmicro.com.
Figure 3. Application of Positive ESD Pulse between Input Channel and Ground
© 2005 California Micro Devices Corp. All rights reserved.
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430 N. McCarthy Blvd., Milpitas, CA 95035-5112
●
Tel: 408.263.3214
●
Fax: 408.263.7846
●
www.calmicro.com
06/30/05
PRELIMINARY
CM1215
Mechanical Details
The CM1215 is supplied in SOT23-3, SOT143-4,
SOT23-5 and SOT23-6 packages with a lead-free finishing option. These package drawings are presented
on the following pages.
SOT23-3 Mechanical Specifications
CM1215-01ST/SO devices are packaged in 3-pin
SOT23 packages. Dimensions are presented below.
Mechanical Package Diagrams
For complete information on the SOT23-3 package,
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
1
Inches
Min
Max
Min
Max
A
0.89
1.12
0.0350
0.0441
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
e1
L
L1
# per tape
and reel
0.95 BSC
SIDE VIEW
D
A1 A
0.0374 BSC
1.90 BSC
0.40
e1
e
A1
e
2
0.0748 BSC
0.60
0.54 REF
0.0157
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.
06/30/05
430 N. McCarthy Blvd., Milpitas, CA 95035-5112
●
Tel: 408.263.3214
●
Fax: 408.263.7846
●
www.calmicro.com
7
PRELIMINARY
CM1215
Mechanical Details (cont’d)
SOT143 Mechanical Specifications
CM1215-02SS/SR devices are supplied in 4-pin
SOT143 packages. Dimensions are presented below.
Mechanical Package Diagrams
For complete information on the SOT143 package, see
the California Micro Devices SOT143 Package Information document.
TOP VIEW
e
4
3
PACKAGE DIMENSIONS
Package
SOT143
Pins
4
Dimensions
E1 E
1
Millimeters
e1
Inches
Min
Max
Min
Max
A
0.80
1.22
0.031
0.048
A1
0.05
0.15
0.002
0.006
b
0.30
0.50
0.012
0.019
b2
0.76
0.89
0.030
0.035
c
0.08
0.20
0.003
0.008
D
2.80
3.04
0.110
0.119
E
2.10
2.64
0.082
0.103
E1
1.20
1.40
0.047
0.055
e
1.92 BSC
0.075 BSC
e1
0.20 BSC
0.008 BSC
L
L1
# per tape
and reel
0.4
0.6
0.54 REF
0.016
2
SIDE VIEW
D
A
b2
b
A1
END VIEW
0.024
c
0.021 REF
3000 pieces
L1
Controlling dimension: millimeters
L
Package Dimensions for SOT143.
© 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
06/30/05
PRELIMINARY
CM1215
Mechanical Details (cont’d)
SOT23-5 Mechanical Specifications
CM1215-02ST/SO devices are supplied in 5-pin
SOT23 packages. Dimensions are presented below.
Mechanical Package Diagrams
For complete information on the SOT23-5 package,
see the California Micro Devices SOT23 Package
Information document.
TOP VIEW
e1
e
5
E1 E
PACKAGE DIMENSIONS
1
Package
SOT23-5 (JEDEC name is MO-178)
Pins
5
Dimensions
SIDE VIEW
Min
Max
A
--
1.45
--
0.0571
A1
0.00
0.15
0.0000
0.0059
b
0.30
0.50
0.0118
0.0197
c
0.08
0.22
0.0031
0.0087
D
2.75
3.05
0.1083
0.1201
E
2.60
3.00
0.1024
0.1181
E1
1.45
1.75
0.0571
0.0689
e
0.95 BSC
0.0374 BSC
e1
1.90 BSC
0.0748 BSC
L1
# per tape
and reel
0.60
0.60 REF
3
Inches
Max
0.30
2
b
Millimeters
Min
L
4
0.0118
D
A
A1
END VIEW
0.0236
c
0.0236 REF
L1
L
3000 pieces
Controlling dimension: millimeters
Package Dimensions for SOT23-5.
© 2005 California Micro Devices Corp. All rights reserved.
06/30/05
430 N. McCarthy Blvd., Milpitas, CA 95035-5112
●
Tel: 408.263.3214
●
Fax: 408.263.7846
●
www.calmicro.com
9
PRELIMINARY
CM1215
Mechanical Details (cont’d)
SOT23-6 Mechanical Specifications
CM1215-04ST/SO devices are supplied in 6-pin
SOT23 packages. Dimensions are presented below.
Mechanical Package Diagrams
For complete information on the SOT23-6 package,
see the California Micro Devices SOT23 Package
Information document.
TOP VIEW
e1
6
PACKAGE DIMENSIONS
SOT23-6 (JEDEC name is MO-178)
Pins
6
Millimeters
Max
Min
Max
--
1.45
--
0.0571
A1
0.00
0.15
0.0000
0.0059
b
0.30
0.50
0.0118
0.0197
c
0.08
0.22
0.0031
0.0087
D
2.75
3.05
0.1083
0.1201
E
2.60
3.00
0.1024
0.1181
E1
1.45
1.75
0.0571
0.0689
e
0.95 BSC
0.0374 BSC
e1
1.90 BSC
0.0748 BSC
L1
# per tape
and reel
0.60
0.60 REF
1
2
0.0118
3
b
Min
0.30
4
E1 E
Inches
A
L
5
Pin 1
Marking
Package
Dimensions
e
SIDE VIEW
D
A
A1
END VIEW
0.0236
0.0236 REF
3000 pieces
c
L1
L
Controlling dimension: millimeters
Package Dimensions for SOT23-6.
© 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
06/30/05
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