ETC CM1214-02MS 1 and 2 channel picoguardtm ac signal esd protector Datasheet

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.
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430 N. McCarthy Blvd., Milpitas, CA 95035-5112
●
Tel: 408.263.3214
●
Fax: 408.263.7846
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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.
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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
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
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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
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