UM8401 UNIONSEMI | Alldatasheet
Document overview
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Technical content
Features
EMI Filtering and ESD Protection for Data Lines Wireless Phones Handheld Products Notebook Computers LCD Displays z EMI/RFI Filter with Integrated TVS for ESD Protection z ESD Protection to IEC 61000-4-2 (ESD) Level 4, ±15kV (air), ±8kV (contact) z 25dB Minimum Attenuation: 800MHz to 2.5GHz z Working Voltage: 5V z Resistor: 100Ω ±15% z Typical Capacitance: 15pF (VR = 2.5V) z Solid-state Technology z DFN16 Package: 4.0mm x 1.6 mm z Moisture Sensitivity Level 1 P i n C o n f i g u r a t i o n s T o p V i e w O:option XX: Weekly Code UM8401 DFN16 4.0×1.6
http://www.union-ic.com Rev.08 Dec.2009 2 / 7 UM8401
Ordering Information
Voltage Packaging Type Channel Marking Code Shipping Qty UM8401 5.0V DFN16 L×W=4.0×1.6mm2 8 8401 3000 /7 Inch Tape & Reel Absolute Maximum Ratings PARAMETER SYMBOL VALUE UNIT Junction Temperature T J 125 °C Steady State Power per Resistor @ 25℃ PR 328 mW Operating Temperature Range T OP -40 to 85 °C Storage Temperature Range T STG -55 to 150 °C Maximum Lead Temperature for Soldering T L 260 °C
Electrical Characteristics
PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Reverse Stand-Off Voltage V RWM 5.0 V Reverse Breakdown Voltage V BR It = 1mA 6.0 7.0 8.0 V Reverse Leakage Current I R VRWM = 3.3V 100 nA Total Series Resistance R A IR=20mA Each Line 85 100 115 Ω Total Capacitance C d Input to Gnd, Each Line VR = 0V, f = 1MHz 20 23 26 pF Total Capacitance C d Input to Gnd, Each Line VR = 2.5V, f = 1MHz 13 15 18 pF Cut-Off Frequency (Notes) f3dB Above this frequency, appreciable attenuation occurs 150 MHz Notes: 50Ω source and 50Ω load termination.
http://www.union-ic.com Rev.08 Dec.2009 3 / 7 UM8401 Typical Operating Characteristics Typical Insertion Loss S21 Analog Crosstalk Curve (S41) Typical Resistance vs. Temperature Capacitance vs. Reverse Voltage - 4 0 - 2 00 2 04 06 08 0 100 101 102 103 104 Resistance(ohm) Temperature(Celsiur scale) 012345 0.4 0.5 0.6 0.7 0.8 0.9 1.0 f=1M Cj(Vr)/Cj(Vr=0) Reverse Voltage - Vr(V)
http://www.union-ic.com Rev.08 Dec.2009 4 / 7 UM8401 Applications Information Device Connection The UM8401 is comprised of eight identical circuits each consisting of a low pass filter for EMI/RFI suppression and dual TVS diodes for ESD protection. The device is in a 16-pin DFN package. Electrical connection is made to the 16 pins located at the bottom of the device. A center tab serves as the ground connection. The device has a flow through design for easy layout. All path lengths should be kept as short as possible to minimize the effects of parasitic inductance in the board traces. Recommendations for the ground connection are given below. Ground Connection Recommendation Parasitic inductance present in the board layout will affect the filtering performance of the device. As frequency increases, the effect of the inductance becomes more dominant. This effect is given by Equation 1. Pin Identification 1 - 8 Input Lines 9 - 16 Output Lines Center Tab Ground Equation 1: The Impedance of an Inductor at Frequency XLF XLF(L, f ) = 2×л×f ×L Where: L= Inductance (H) f = Frequency (Hz) Via connections to the ground plane form rectangular wire loops or ground loop inductance as shown in Figure 2. Ground loop inductance can be reduced by using multiple vias to make the connection to the ground plane. Bringing the ground plane closer to the signal layer (preferably the next layer) also reduces ground loop inductance. Multiple vias in the device ground pad will result in a lower inductive ground loop over two exterior vias. Vias with a diameter d are separated by a distance y run between layers separated by a distance x. The inductance of the loop path is given by Equation 2. Thus, decreasing distance x and y will reduce the loop inductance and result in better high frequency filter characteristics.
http://www.union-ic.com Rev.08 Dec.2009 6 / 7 UM8401
Package Information
DFN16 4x1.6 Outline Drawing DIMENSIONS MILLIMETERS Symbol Min Typ Max D 3.90 4.00 4.10 E 1.50 1.60 1.70 D1 3.10 3.20 3.30 c 0.30 0.40 0.50 A 0.545 0.575 0.80 A1 0 0.02 0.05 A2 - 0.13 0.253 b 0.18 0.25 0.30 L 0.25 0.33 0.38 e - 0.50 - Land Pattern NOTES: 1. Compound dimension: 4.0x1.6; 2. Unit: mm; 3. General tolerance ±0.05mm unless otherwise specified; 4. The layout is just for reference. Tape and Reel Orientation
http://www.union-ic.com Rev.08 Dec.2009 7 / 7 UM8401 IMPORTANT NOTICE The information in this document has been carefully reviewed and is believed to be accurate. Nonetheless, this document is subject to change without notice. Union assumes no responsibility for any inaccuracies that may be contained in this document, and makes no commitment to update or to keep current the contained information, or to notify a person or organization of any update. Union reserves the right to make changes, at any time, in order to improve reliability, function or design and to attempt to supply the best product possible. Union Semiconductor, Inc Add: 7F, No. 5, Bibo Road, Shanghai 201203 Tel: 021-51097928 Fax: 021-51026018 Website: www.union-ic.com