LX7201-xx
I N T E G R A T E D
P R O D U C T S
EMI Filter & ESD Protection for Down Stream
USB Ports
P
RODUCTION
D
ATA
S
HEET
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 22鈩?Series
Resistance
Crosses from Semtech STF201
APPLICATIONS
DESCRIPTION
The LX7201 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
downstream 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
15K鈩?pull-down resistors identify the
line as a downstream connection.
The 47 pF capacitor completes the
high frequency filter and controls the
edge rate of the USB signals. The
LX7201 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 LX7201 minimizes board space
and allows for ideal placement near the
connector. The LX7201 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
PACKAGE ORDER INFO
T
J
(擄C)
-40 to 125
-40 to 125
SF
Plastic
6-Pin SOT23
LX7201-15ISF
LX7201-22ISF
Package
Marking
115
122
Tape & Reel Quantity
(Reel Size)
3K (7inches)
USB 1.1 and USB 2.0 Full
Speed Compliant
Peripherals
Printers
Monitors
Servers, Desktops and
Notebook Computers
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
Note: Append the letter 鈥淭鈥?to the part number
For Tape & Reel Ordering
PRODUCT HIGHLIGHT
LX7201-
XX
LX7201-
XX
Circuit Diagram
Functional Schematic with Pin Out
Copyright
漏
2002
Rev. 1.0d, 2005-02-07
Microsemi
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
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