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EM1402 PDF 데이터시트 : 부품 기능 및 핀배열

부품번호 EM1402
기능 3 EMI FILTER/ 2 TVS ARRAY
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EM1402 데이터시트, 핀배열, 회로
EM1402
APPLICATIONS
Cellular Phones
Notebooks
Personal Digital Assistant (PDA)
Ground Positioning System (GPS)
SIM Cards
IEC COMPATIBILITY (EN61000-4)
61000-4-2 (ESD): Air - 15kV, Contact - 8kV
61000-4-4 (EFT): 40A - 5/50ns
FEATURES
ESD Protection > 25 kilovolts
Bidirectional EMI Filtering/TVS Low Pass Filters
Low Insertion Loss: -3db Roll-Off @ 77/85 MHz
Protects Up to Five(5) Data Lines
RoHS Compliant
MECHANICAL CHARACTERISTICS
10 Bump Flip Chip Package
Weight 0.73 milligrams (Approximate)
Available in Lead-Free Plating
Solder Reflow Temperature:
Lead-Free - Sn/Ag/Cu, 96/3.5/0.5: 260-270°C
Consult Factory for Leaded Device Availability
Flammability Rating UL 94V-0
8mm Tape and Reel Per EIA Standard 481
PIN CONFIGURATION
3 EMI FILTER/ 2 TVS ARRAY
10 BUMP FLIP CHIP
R1 C1 A2 R2
A1 C2
CC
CC
GND
R1 C3 A4
A3
C4
CC
B1 B2
CC
R1 = 100 Ohms
R2 = 47 Ohms
05219.R1 2/07
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EM1402 pdf, 반도체, 판매, 대치품
APPLICATION NOTE
The EM1402 provides a bidirectional filter and protector
for all the signals and the power line on the SIM (sub-
scriber indenty module) card connector. SIM cards are
found in all GSM cellular phones and in some other
handheld devices or card readers. The ESD diodes
protect the controller against possible ESD strikes that
may occur when the connector pins are exposed during
direct contact or during insertion of the SIM card into the
card slot. The EMI filter suppresses all high-frequency
noise, preventing the unwanted EMI signals from both
entering and exiting the main board. The signals that
interface with the SIM card are the Reset, the Clock and
the bidirectional data I/O as shown in Figure 1.
For best filter and ESD performance, both ground bumps
(B1, B2) of the EM1402 should be directly connected to
the ground plane. A small capacitor of about 1µF is
required next to the VCC pin of the SIM connector in order
to improve stability of the SIM card supply rail.
CIRCUIT BOARD LAYOUT RECOMMENDATIONS
Circuit board layout is critical for Electromagnetic
Compatibility (EMC) protection. The following guidelines
are recommended:
The protection device should be placed near the
input terminals or connectors, the device will divert
the transient current immediately before it can be
coupled into the nearby traces.
The path length between the TVS device and the
protected line should be minimized.
All conductive loops including power and ground
loops should be minimized.
The transient current return path to ground should be
kept as short as possible to reduce parasitic
inductance.
Ground planes should be used whenever possible.
For multilayer PCBs, use ground vias.
Controller
with logic
level translator
EM1402
100 Ohm
SIM Card Connector
RST Reset
47 Ohm
CLK
Clock
100 Ohm
I/O
Data I/O
VCC
supply
(5V, 3.3V or 1.8V)
VCC
5V/3V/1.8V
1µF
GND
GND
Figure 1. Typical Application for SIM Card Interface
05219.R1 2/07
4 www.protekdevices.com

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EM1402

3 EMI FILTER/ 2 TVS ARRAY

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