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| LX7201-xx INTEGRATED PRODUCTS EMI Filter & ESD Protection for Down Stream USB Ports PRODUCTION DATA SHEET 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 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 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's website: http://www.microsemi.com PACKAGE ORDER INFO TJ (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 800900 MHz range >12dB attenuation in the WLAN frequencies of 2.4GHz and 5.06.0 GHz Note: Append the letter "T" to the part number For Tape & Reel Ordering PRODUCT HIGHLIGHT LX7201-XX LX7201-XX Circuit Diagram Functional Schematic with Pin Out Copyright (c) 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 Page 1 LX7201-xx INTEGRATED PRODUCTS EMI Filter & ESD Protection for Down Stream USB Ports PRODUCTION DATA SHEET ABSOLUTE MAXIMUM RATINGS PACKAGE PIN OUT WWW .Microsemi .C OM Steady State Power .............................................................................100mW ESD Air Discharge per IEC61000-4-2....................................................16kV ESD Contact Discharge per IEC61000-4-2 ............................................10kV Lead Soldering Temperature (10 Seconds) .......................................... 260C Operating Temperature .........................................................-40C to +125C Storage Temperature Range..................................................-55C to +150C Note: Exceeding these ratings could cause damage to the device. All voltages are with respect to Ground. Currents are positive into, negative out of specified terminal. VBUS DIN DIN 1 2 3 6 5 4 GND DOUT DOUT SF PACKAGE (Top View) THERMAL DATA SF Plastic SOT23 6-Pin 62 C/W 96 C/W THERMAL RESISTANCE-JUNCTION TO CASE, JC THERMAL RESISTANCE-JUNCTION TO AMBIENT, JA Junction Temperature Calculation: TJ = TA + (PD x JA). The JA numbers are guidelines for the thermal performance of the device/pc-board system. All of the above assume no ambient airflow. FUNCTIONAL PIN DESCRIPTION Name VBUS DIN GND DOUT Bus Voltage Data In Ground Data Out Description ELECTRICAL CHARACTERISTICS Unless otherwise specified, the following specifications apply over the operating ambient temperature -40C TA otherwise noted. Parameter Stand-Off Voltage Breakdown Voltage Leakage Current Series Resistance (-15) Series Resistance (-22) Temperature Coefficient of RS Pull Down Resistance Capacitor Total Capacitance Symbol VRWM VBR IR RS RS TCOEFF RPD C CTOT Test Conditions IR = 1mA VRWM = 5.25V, T = 25C Each Line Each Line Each Line Each Line Each Line Between I/O Pins and Ground, Each Device VR = 0V, f = 1MHz +125C except where Min 6 13.5 19.8 13.5 54 LX7201-xx Typ Max 5.25 1 16.5 24.2 16.5 66 Units V V A ppm ELECTRICALS ELECTRICALS 15 22 200 15 47 60 K pF pF Copyright (c) 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 Page 2 LX7201-xx INTEGRATED PRODUCTS EMI Filter & ESD Protection for Down Stream USB Ports PRODUCTION DATA SHEET APPLICATION CIRCUITS WWW .Microsemi .C OM Host or Hub (downstream) port LX7201 RS Peripheral (upstream) port V BUS LX7202 GND RPU C 4 C 3 RPD RS C RPD 1 2 3 6 5 4 USB Transceiver USB Transceiver 5 6 GND 2 1 V BUS RS C RS Figure 1 - Typical Application APPLICATION INFORMATION The LX7201 meets the requirements of the USB v1.1 and USB 2.0 Full Speed specification for device termination, EMI filtering and ESD protection. The RS resistor provides the proper signal termination; the 47pF capacitor controls the signal rise and fall slew; the TVS diodes protect the IC from ESD damage; and the total capacitance and resistance creates a low pass filter eliminating the high frequency energy from the circuit. Device Connection: Voltage Supply (VBUS) is connected to Pin 1 Ground is connected to Pin 6 D+ from the connector is routed to Pin 2 and out of Pin 5. D- from the connector is routed to Pin 3 and out of Pin 4. ELECTROMAGNETIC EMISSION AND SUSCEPTABILITY FCC Part 15 sets limits for maximum allowable EM emission and susceptibility. There are two types of emissions. Conducted emissions with frequency of emission of 0.45 to 30 MHz and Radiated emissions with frequency of emission of 30 MHz to 40 GHz. All digital computing devices including the peripheral devices must comply. Examples of peripheral devices include terminals, printers, external floppy disk drives and other data storage devices, video monitors, keyboards, control cards, interface boards, external memory expansion cards and other input/output devices that may or may not contain digital circuitry. LX7201 is optimized to minimize the radiated EMI which is the primary concern in devices using USB. Refer to the typical filter response curve for the attenuation characteristics of LX7201 over the frequency range of 30KHz to 6GHz. APPLICATIONS APPLICATIONS Copyright (c) 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 Page 3 LX7201-xx INTEGRATED PRODUCTS EMI Filter & ESD Protection for Down Stream USB Ports PRODUCTION DATA SHEET CHARACTERISTIC CURVES WWW .Microsemi .C OM 8KV Contact ESD 1 5.0V M 40.0ns Ch1 5.0V M 40.0ns Figure 2 - 8KV ESD input pulse as per IEC61000-4-2. Vertical scale is equivalent to 5A/div. CH1 S12 LOG 5dB / REF 0 dB Figure 3 - Clamping Characteristics when device subjected to an 8 KV ESD pulse. CH1 S12 LOG 20dB / REF 0 dB START 0.030 000 MHz STOP 6 000.000 000 MHz START 0.030 000 MHz STOP 6 000.000 000 MHz Figure 4 - Frequency response curve. Low insertion loss in the pass band and -20dB attenuation at 800-900 MHz. Better than -10dB attenuation at the WLAN frequencies of 2.4 and 5.0-6.0 GHz. Figure 5 - Analog Crosstalk between the two datalines Dand D+ CHARTS CHARTS Copyright (c) 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 Page 4 LX7201-xx INTEGRATED PRODUCTS EMI Filter & ESD Protection for Down Stream USB Ports PRODUCTION DATA SHEET PACKAGE DIMENSIONS WWW .Microsemi .C OM SF 6-Pin SOT-23 Package MILLIMETERS MIN MAX 0.90 1.30 0.90 1.45 0.25 0.50 0.09 0.20 2.80 3.10 1.50 1.75 0.95 BSC 1.90 BSC 2.60 3.00 0.35 0.55 0.00 0.15 10 MAX INCHES MIN MAX 0.035 0.051 0.035 0.057 0.010 0.020 0.004 0.008 0.110 0.122 0.059 0.069 0.038 BSC 0.075 BSC 0.102 0.118 0.014 0.022 0.000 0.006 10 MAX D G H E A1 A C B J K Dim A A1 B C D E F G H I J K Note: F I 1. Dimensions do not include mold flash or protrusions; these shall not exceed 0.155mm(.006") on any side. Lead dimension shall not include solder coverage. Recommended Footprint X Y C (ref) Dim C D E X Y MILLIMETERS MIN MAX 2.40 1.90 0.95 0.70 1.00 INCHES MIN MAX 0.094 0.074 0.037 0.028 0.039 M MECHANICALS E (ref) D (ref) Copyright (c) 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 Page 5 LX7201-xx INTEGRATED PRODUCTS EMI Filter & ESD Protection for Down Stream USB Ports PRODUCTION DATA SHEET NOTES WWW .Microsemi .C OM N NOTES PRODUCTION DATA - Information contained in this document is proprietary to Microsemi and is current as of publication date. This document may not be modified in any way without the express written consent of Microsemi. Product processing does not necessarily include testing of all parameters. Microsemi reserves the right to change the configuration and performance of the product and to discontinue product at any time. Copyright (c) 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 Page 6 |
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