LX7202-xx
PRODUCTION DATA SHEET
Microsemi
Analgo Mixed Signal Group
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 1
WWW.Microsemi .COM
EMI Filter & ESD Protection for Up Stream USB
Ports
Copyright © 2002
Rev. 1.0d, 2007-04-11
TM
®
DESCRIPTION
The LX7202 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 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
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
LX7202 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 LX7202 minimizes board space
and allows for ideal placement near the
connector. The LX7202 is ideal for use
in USB hubs, peripherals and portable
appliances.
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
PACKAGE ORDER INFO
T
J
(°C)
SF
Plastic
6-Pin SOT23
Package
Marking
Tape & Reel Quantity
(Reel Size)
-40 to 125 LX7202-15ISF 2021
-40 to 125 LX7202-22ISF 2022
3K (7inches)
Note: Append the letter “T” to the part number
For Tape & Reel Ordering
KEY FEATURES
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
Available with 15 or 22Ω Series
Resistance
Crosses from Semtech STF202
APPLICATIONS
USB 1.1 and USB 2.0 Full
Speed Compliant
Peripherals
Computers and Printers
Mobile phones
Pagers and PDA’s
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
PRODUCT HIGHLIGHT
Rs
Rs
D out
to IC
V
BUS
1.5K
D in
from
connector
6
1
D in
from
connector
D out
to IC
47pF
47pF
Circuit Diagram
R
PU
R
S
C
R
S
C
16
5
4
3
2
V
BUS
D
IN
from
connector
D
OUT
to IC
GND
D
IN
from
connector
D
OUT
to IC
Functional Schematic with PinOut
L
L
X
X
7
7
2
2
0
0
2
2
-
-
X
X
X
X