LX7203-xx
I N T E G R A T E D
P R O D U C T S
EMI Filter & ESD Protection for Up Stream USB
Ports
P
RODUCTION
D
ATA
S
HEET
KEY FEATURES
Small SC70-6L Package
Bi-directional EMI/RFI low-pass
filter
Line termination with integrated
ESD protection
Low TVS operating voltage
(5.25V)
Low leakage current
Integrated single die construction
Crosses From Semtech STF203
APPLICATIONS
DESCRIPTION
The LX7203 is an integrated
Universal Serial Bus (USB) line
termination device with an EMI filter
and ESD protection diodes. This
device offers a cost effective and
compact solution for one USB
upstream port.
The USB v1.1
specification requires line termination
resistors on both the D+ and D- lines.
These resistors ensure signal integrity
by matching the cable impedance to
that of the differential driver. The 1.5
k鈩?pull-up resistor identifies the
appropriate data line for full speed or
low speed operation.
The 47 pF capacitor completes the
high frequency filter and controls the
edge rate of the USB signals The
LX7203 protects both D+ and D- data
lines and the voltage bus from ESD.
The TVS protection diodes exceed the
requirements of IEC61000-4-2, level 4,
15kV (air discharge) and 8kV (contact
discharge).The integrated configuration
of the LX7203 minimizes board space
and allows for ideal placement near the
connector. The LX7203 is ideal for use
in USB hubs, peripherals and portable
appliances
WWW .
Microsemi
.C
OM
IMPORTANT:
For the most current data, consult
MICROSEMI鈥檚
website:
http://www.microsemi.com
USB Ports
Peripherals
Computers and Printers
Mobile phones
Pagers and PDA鈥檚
Digital Cameras
BENEFITS
Filter response characterized up
to 6 GHz
<2dB insertion loss in the pass
band
>20dB attenuation in the 800-
900 MHz range
>12dB attenuation in the WLAN
frequencies of 2.4GHz and 5.0-
6.0 GHz
PACKAGE ORDER INFO
T
J
(擄C)
-40 to 125
-40 to 125
Plastic
SM
6-Pin SC70
LX7203-15ISM
LX7203-22ISM
Package
Marking
315
322
Tape & Reel Quantity
(Reel Size)
3K (7inches)
Note: Append the letter 鈥淭鈥?to the part number
For Tape & Reel Ordering
PRODUCT HIGHLIGHT
from
connector
1.5K
D in
Rs
C
EDGE
D out
to IC
D
IN
1
from
connector
2
GND
D
IN
3
from
connector
?
R
S
C
6
D
OUT
to IC
V
BUS
5
C
EDGE
2
R
PU
5
V
BUS
LX7203
LX7203
C
R
S
4
from
connector
D in
D out
Rs
to IC
D
OUT
to IC
Functional Schematic with PinOut
Circuit Diagram
Copyright
錚?/div>
2002
Rev. 1.0a, 2002-10-22
Microsemi
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
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