ECLAMP2342N.TCT [SEMTECH]
ESD/EMI Protection for Color LCD Interfaces; ESD / EMI保护彩色液晶显示器接口
| 型号： | ECLAMP2342N.TCT |
| 厂家： | 
SEMTECH CORPORATION |
| 描述： | ESD/EMI Protection for Color LCD Interfaces |
| 文件： | 总6页 (文件大小：186K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
EClamp2342N
ESD/EMI Protection
for Color LCD Interfaces
PROTECTION PRODUCTS - EMIClampTM
Features
Description
The EClampTM2342N is a low pass filter array with
integrated TVS diodes. It is designed to suppress
unwanted EMI/RFI signals and provide electrostatic
discharge (ESD) protection in portable electronic
equipment. This state-of-the-art device utilizes solid-
state silicon-avalanche technology for superior clamp-
ing performance and DC electrical characteristics.
They have been optimized for protection of color
LCD panels in cellular phones and other portable
electronics.
Bidirectional EMI/RFI filter with integrated TVS
for ESD protection
ESD protection to IEC 61000-4-2 (ESD) Level4,
+/-15kV (air), +/-8kV (contact)
Filter performance: 30dB minimum attenuation
1GHz to 2.5GHz
TVS working voltage: 5V
Resistor: 100Ω +/− 15%
Input Capacitance: 20pF (VR = 0V)
Protection and filtering for eight lines
Solid-state technology
The device consists of eight identical circuits comprised
of TVS diodes for ESD protection, and a resistor -
capacitor network for EMI/RFI filtering. A series
resistor value of 100Ω and a capacitance value of
20pF are used to achieve 30dB minimum attenuation
from 1GHz to 2.5GHz. Each line features two stages of
TVS diode protection. The TVS diodes provide effec-
tive suppression of ESD voltages in excess of 15kV (air
discharge) and 8kV (contact discharge) per IEC 61000-
4-2, level 4.
Mechanical Characteristics
16 pin QFN
Nominal Dimensions: 3.0 x 3.0 x 1.0 mm
Lead Pitch: 0.5mm
Lead finish: Matte Tin
Marking : Marking Code + Date Code
Packaging : Tape and Reel per EIA 481
Applications
The EClamp2342N is in a 16-pin, 0.5mm pitch QFN
package. It measures 3.0 x 3.0 x 1.0mm. The small
package makes it ideal for use in portable electronics
such as cell phones, digital still cameras, and PDA’s.
Color LCD Panel Protection
Cell Phone CCD Camera Lines
Clamshell Cell Phones
Personal Digital Assistants (PDA’s)
Circuit Diagram
Package Configuration
16
1
LOW PASS FILTER
R = 100Ω, C=20pF (max)
16 Pin QFN (Top Side View)
Maximum Dimensions (in mm)
Device Schematic (8X)
www.semtech.com
Revision 09/01/2004
1
EClamp2342N
PROTECTION PRODUCTS
Maximum Ratings
Rating
Symbol
Value
Units
kV
ESD per IEC 61000-4-2 (Air)
ESD per IEC 61000-4-2 (Contact)
+/- 17
+/- 12
VESD
Junction Temperature
Operating Temperature
Storage Temperature
TJ
125
oC
Top
-40 to +85
oC
oC
TSTG
-55 to +150
Electrical Characteristics
Parameter
Symbol
Conditions
Minimum
Typical
8
Maximum
Units
TVS Reverse Stand-Off Voltage
TVS Reverse Breakdown Voltage
TVS Reverse Leakage Current
Total Series Resistance
VRWM
VBR
IR
5
V
V
It = 1mA
VRWM = 3.0V
Each Line
6
10
0.5
115
20
µA
R
85
100
16
Ohms
pF
Total Capacitance
Cin
Input to Gnd,
Each Line
VR = 0V, f = 1MHz
Total Capacitance
Cin
Input to Gnd,
Each Line
12
pF
VR = 2.5V, f = 1MHz
www.semtech.com
2004 Semtech Corp.
2
EClamp2342N
PROTECTION PRODUCTS
Typical Characteristics
Typical Insertion Loss S21 (Each Line)
Analog Crosstalk (Each Line)
CH1 S21 LOG
6 dB / REF 0 dB
CH1S21 LOG
20 dB /REF 0 dB
1: -8.4313 dB
280.123 MHz
2: -18.865 dB
900 MHz
0 dB
3: -31.170 dB
1.8 GHz
1
-6 dB
-12 dB
-18 dB
-24 dB
-30 dB
-36 dB
-42 dB
4: -31.638 dB
2.5 GHz
2
3
4
3
.
STOP 000000000 MHz
START. 030MHz
1
10
MHz
100
3
1
MHz
START 030MHz
MHz
GHz
GHz
3
.
STOP 000000000MHz
.
ESD Clamping (+8kV Contact)
ESD Clamping (-8kV Contact)
Capacitance vs. Reverse Voltage
(Normalized to 0 volts)
Series Resistance vs. Temperature
(Normalized to 25 Degrees Celcius)
1.2
1.1
1.0
0.9
0.8
0.7
1.2
1
0.8
0.6
0.4
0.2
0
f = 1 MHz
0
1
2
3
4
5
-40
-30
-20
-10
0
10
20
30
40
50
60
70
80
Temperature (*C)
Reverse Voltage - VR (V)
www.semtech.com
2004 Semtech Corp.
3
EClamp2342N
PROTECTION PRODUCTS
Applications Information
Device Connection
Pin Identification and Configuration (Top Side View)
The EClamp2342N is comprised of eight identical
circuits each consisting of a low pass filter for EMI/RFI
suppression and dual TVS diodes for ESD protection.
The device is housed in a 16-pin Quad Flat No-Lead
(QFN) package. Electrical connection is made via 16
pins located at the bottom of the device. A center tab
serves as the ground connection. Pin connections are
noted in the table to the right. The device is symmetri-
cal and designed for easy PCB routing as shown in the
layout example below. All path lengths should be kept
as short as possible to minimize the effects of parasitic
inductance in the board traces.
16 15 14 13
12
11
10
9
1
2
3
4
5 6 7 8
Pin
Identification
Input, Lines 1, 2, 3, 4, 5, 6, 7, 8
Output Lines 1, 2, 3, 4, 5,6, 7, 8
Ground
Matte Tin Lead Finish
3 - 10
Matte tin has become the industry standard lead-free
replacement for SnPb lead finishes. A matte tin finish
is composed of 100% tin solder with large grains.
Since the solder volume on the leads is small com-
pared to the solder paste volume that is placed on the
land pattern of the PCB, the reflow profile will be
determined by the requirements of the solder paste.
Therefore, these devices are compatible with both
lead-free and SnPb assembly techniques. In addition,
unlike other lead-free compositions, matte tin does not
have any added alloys that can cause degradation of
the solder joint.
1, 2, 11 - 16
Center Tab
Pin Configuration and Schematic
3
2
7
14
13
LOW PASS FILTER
LOW PASS FILTER
8
9
4
1
LOW PASS FILTER
LOW PASS FILTER
Layout Example (Top Side View)
Outputs
12
1 2
3 4 5 6
7 8
5
6
16
15
LOW PASS FILTER
LOW PASS FILTER
10
11
LOW PASS FILTER
LOW PASS FILTER
I/O Lines 1 - 4
I/O Lines 5 - 8
1 2
3 4 5 6
Inputs
7 8
www.semtech.com
2004 Semtech Corp.
4
EClamp2342N
PROTECTION PRODUCTS
Outline Drawing - 16L QFN
DIMENSIONS
INCHES MILLIMETERS
DIM
A
MIN NOM MAX MIN NOM MAX
A
D
-
-
-
-
.031
A1 .000
.040 0.80
.002 0.00
1.00
0.05
-
B
E
(.008)
(0.20)
-
-
-
A2
b
D
.007 .010 .012 0.18 0.25 0.30
.114 .118 .122 2.90 3.00 3.10
PIN 1
D1 .051 .057 .061 1.30 1.45 1.55
INDICATOR
E
.114 .118 .122 2.90 3.00 3.10
(LASER MARK)
E1 .051 .057 .061 1.30 1.45 1.55
e
.020 BSC
0.50 BSC
L
N
.012 .016 .020 0.30 0.40 0.50
16
16
aaa
.003
.004
0.08
0.10
bbb
A2
A
SEATING
PLANE
aaa C
A1
C
D1
e/2
LxN
E/2
E1
2
1
N
e
bxN
bbb
D/2
C A B
NOTES:
1.
2. COPLANARITY APPLIES TO THE EXPOSED PAD AS WELL AS THE TERMINALS.
CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES).
Land Pattern - 16L QFN
H
R
DIMENSIONS
DIM
INCHES
(.112)
.079
MILLIMETERS
(2.85)
2.00
1.60
0.15
0.50
0.30
0.85
3.70
C
G
H
R
P
X
Y
Z
2x G
2x (C)
2x Z
.063
.006
.020
.012
4x Y
.033
.146
X
P
NOTES:
1.
THIS LAND PATTERN IS FOR REFERENCE PURPOSES ONLY.
CONSULT YOUR MANUFACTURING GROUP TO ENSURE YOUR
COMPANY'S MANUFACTURING GUIDELINES ARE MET.
www.semtech.com
2004 Semtech Corp.
5
EClamp2342N
PROTECTION PRODUCTS
Marking
Ordering Information
Qty per
Reel
Part Number
Reel Size
16 15 14 13
13 141516
8 7 6 5
EClamp2342N.TCT
3000
7 Inch
1
2
3
4
12
11
10
9
12
11
10
9
1
2
3
4
EMIClamp and EClamp are marks of Semtech
Corporation
2342N
YYWW
5 6 7 8
Top View Showing
Device Marking
Bottom View Showing
Pin 1 Identifier
Notes:
1) YYWW = Date Code (example: 0410 = 2004 year
Week 10
2) Pin 1 indicated by bevel on the ground pad
Tape and Reel Specification
Tape Specifications
Device Orientation in Tape
Contact Information
Semtech Corporation
Protection Products Division
200 Flynn Rd., Camarillo, CA 93012
Phone: (805)498-2111 FAX (805)498-3804
www.semtech.com
2004 Semtech Corp.
6
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