AOZ8802 Ultra-Low Capacitance TVS Diode Array General Description Features The AOZ8802 is a transient voltage suppressor array designed to protect high speed data lines such as HDMI, MDDI, USB, SATA, and Gigabit Ethernet from damaging ESD events. ● This device incorporates four surge rated, low capacitance steering diodes and a TVS in a single package. During transient conditions, the steering diodes direct the transient to either the positive side of the power supply line or to ground. The AOZ8802 provides a typical line to line capacitance of 0.25pF and low insertion loss up to 6GHz providing greater signal integrity making it ideally suited for HDMI 1.3 applications, such as Digital TVs, DVD players, set-top boxes and USB applications in mobile computing devices. ● ESD protection for high-speed data lines: – IEC 61000-4-2, level 4 (ESD) immunity test – ±15kV (air discharge) and ±8kV (contact discharge) – IEC61000-4-4 (EFT) 40A (5/50nS) – IEC61000-4-5 (Lightning) 2.5A (8/20µS) – Human Body Model (HBM) ±15kV Array of surge rated diodes with internal TVS diode ● Small package saves board space ● ● ● ● . s n ig s Low clamping voltage e d Low operating voltage: 5.0V w e n r o Protects two I/O lines Low capacitance between I/O lines: 0.25pF Applications f d e USB, MDDI, SATA ports d The AOZ8802 comes in RoHS compliant, 1.6mm xn 1.0mm e Monitors and flat panel displays x 0.5mm DFN-6 package and is rated -40°C to +85°C m m Set-top box junction temperature range. o c e Video graphics cards r t Digital Video Interface (DVI) No ● ● ● ● ● ● Notebook computers Typical Application Vbus +5V USB Controller Rt D+ D+ Rt DCt D- USB Port GND Ct AOZ8802 Figure 1. USB Port Rev. 1.8 December 2010 www.aosmd.com Page 1 of 8 AOZ8802 Ordering Information Part Number Ambient Temperature Range Package Environmental AOZ8802DI -40°C to +85°C DFN-6 Green Product RoHS Compliant AOS Green Products use reduced levels of Halogens, and are also RoHS compliant. Please visit www.aosmd.com/web/quality/rohs_compliant.jsp for additional information. Pin Configuration CH1 1 6 NC CH2 2 5 NC VN 3 4 VN DFN-6 (Top View) Absolute Maximum Ratings Exceeding the Absolute Maximum ratings may damage the device. Parameter Rating Storage Temperature (TS) -65°C to +150°C ESD Rating per IEC61000-4-2, contact (1) ±8kV ESD Rating per IEC61000-4-2, air(1) ESD Rating per Human Body Model ±15kV (2) ±15kV Notes: 1. IEC 61000-4-2 discharge with CDischarge = 150pF, RDischarge = 330Ω. 2. Human Body Discharge per MIL-STD-883, Method 3015 CDischarge = 100pF, RDischarge = 1.5kΩ. Maximum Operating Ratings Parameter Rating Junction Temperature (TJ) Rev. 1.8 December 2010 -40°C to +125°C www.aosmd.com Page 2 of 8 AOZ8802 Electrical Characteristics TA = 25°C unless otherwise specified. Symbol Parameter Diagram IPP Maximum Reverse Peak Pulse Current VCL Clamping Voltage @ IPP VRWM IR VBR IF Working Peak Reverse Voltage Maximum Reverse Leakage Current Breakdown Voltage IF Forward Current VF Forward Voltage PPK Peak Power Dissipation CJ I VCL VBR VRWM V IR VF IT IPP Max. Capacitance @ VR = 0 and f = 1MHz Specifications in BOLD indicate a temperature range of -40°C to +85°C. Symbol VRWM Parameter Reverse Working Voltage Conditions VN(4) Reverse Breakdown Voltage IT = 1mA, between I/O and IR Reverse Leakage Current VRWM = 5V, between I/O and VN VF Diode Forward Voltage IF = 15mA Cj Typ. Max. Units 5.0 V Between I/O and VN(3) VBR VCL Min. 6.0 0.70 V 1 µA 1 V 13.5 -1.85 V V 19 -3.5 V V 0.85 Ground(5) Channel Clamp Voltage Positive Transients Negative Transient IPP = 1A, tp = 100ns, any I/O pin to Channel Clamp Voltage Positive Transients Negative Transient IPP = 5A, tp = 100ns, any I/O pin to Ground(5) Channel Input Capacitance VR = 0V, f = 1MHz, between I/O pins 0.25 0.35 pF VR = 0V, f = 1MHz, any I/O pin to Ground 0.5 0.75 pF Notes: 3. The working peak reverse voltage, VRWM, should be equal to or greater than the DC or continuous peak operating voltage level. 4. VBR is measured at the pulse test current IT. 5. Measurements performed using a 100ns Transmission Line Pulse (TLP) system. Rev. 1.8 December 2010 www.aosmd.com Page 3 of 8 AOZ8802 Typical Performance Characteristics Clamping Voltage vs. Peak Pulse Current 0 -3 -6 Insertion Loss (dB) Clamping Voltage, VCL (V) I/O – Gnd Insertion Loss (S21) vs. Frequency (tperiod = 100ns, tr = 1ns) 30 25 20 15 -9 -12 -15 -18 -21 -24 -27 10 1.0 -30 1.5 2.0 2.5 3.0 3.5 4.0 4.5 1 5.0 10 Peak Pulse Current, IPP (A) Forward Voltage vs. Forward Current 10000 0 5 -20 Insertion Loss (dB) Forward Voltage (V) 1000 Analog Crosstalk (I/O–I/O) vs. Frequency (tperiod = 100ns, tr = 1ns) 6 100 Frequency (MHz) 4 3 2 1 -40 -60 -80 -100 0 1.0 -120 1.5 2.0 2.5 3.0 3.5 4.0 Forward Current, IPP (A) 4.5 5.0 1 10 100 1000 10000 Frequency (MHz) ESD Clamping 8kV Contact per IEC61000-4-2 I/O – I/O Insertion Loss (S21) vs. Frequency 0 Insertion Loss (dB) -3 -6 -9 -12 -15 -18 -21 -24 -27 -30 1 10 100 1000 10000 Note: Data was taken with a 10X attenuator Frequency (MHz) Rev. 1.8 December 2010 www.aosmd.com Page 4 of 8 AOZ8802 Protecting USB Ports from ESD Because electrostatic discharge (ESD) is common in electronic systems, a device that provides protection from the undesirable effects of ESD must be included in the system design. Designing ESD protection structures is becoming more and more challenging with the system bus and I/O operating more often at high-speed data rates. An Integrated Circuit (IC) connected to external ports can be damaged by ESD from the operating environment. The result of ever-shrinking IC process technology is the decrease of ESD robustness because of the smaller geometry of the silicon die. Since USB is a hot insertion and removal system, the USB components are subjected to ESD and cable discharge event more frequently. Traditional methods of ESD protection include metal oxide varistors (MOVs), and regular CMOS or bipolar clamping diodes. At higher data rates the parasitic characteristics of those devices can cause distortion, deterioration and data loss of the signal integrity. AOZ8802 offers ESD protection for high-speed data rates and for diode array chips for ease of design. The very low 0.5pF (typical) line capacitance of the AOZ8802 ensures less distortion of the 480 Mbit/s USB 2.0 signal; the chips also protect against electrostatic discharge up to the stringent IEC61000-4-2 level 4, 8kV (Contact Discharge) and 15kV standard (Air Discharge). They also provide ultra low matching capacitance to help improve the signal quality of differential data lines. Monolithic integration provides high device reliability, and an optimized pin-out allows EMI-free board layouts. Figure 2 illustrates the flow through design of the PCB layout with the AOZ8802 package design. Clock Clock Data0 Data0 Ground Ground Figure 2. Flow-through Rev. 1.8 December 2010 www.aosmd.com Page 5 of 8 AOZ8802 Package Dimensions, DFN-6 1.6mm x 1.0mm x 0.5mm e D b b1 L E 3 Pin #1 Dot by Marking TOP VIEW Pin #3 Identification R 0.130 2 1 e BOTTOM VIEW A c A1 Dimensions in millimeters SIDE VIEW RECOMMENDED LAND PATTERN 0.40 0.20 0.50 0.36 Symbols A A1 b b1 c D E e L Min. 0.50 0.00 0.15 Nom. 0.55 — 0.20 0.40 0.152 Ref. 1.55 1.60 0.95 1.00 0.50 BSC 0.33 0.38 Max. 0.60 0.05 0.25 1.65 1.05 0.43 Dimensions in inches Symbols A A1 b b1 c D E e L Min. 0.020 0.000 0.006 Nom. Max. 0.022 0.024 — 0.002 0.008 0.010 0.016 0.006 Ref. 0.061 0.063 0.065 0.037 0.039 0.041 0.020 BSC 0.013 0.015 0.017 1.20 0.72 0.24 0.48 0.50 0.30 0.10 UNIT: mm 0.15 Note: 1. Controlling dimension is millimeter. Converted inch dimensions are not necessarily exact. Rev. 1.8 December 2010 www.aosmd.com Page 6 of 8 AOZ8802 Tape and Reel Dimensions, DFN-6 1.6mm x 1.0mm x 0.5mm Carrier Tape P1 D1 T P2 E1 E2 E B0 K0 A0 P0 D0 Feeding Direction UNIT: mm Package DFN 1.6 x 1.0 (8 mm) A0 1.12 ±0.05 B0 1.72 ±0.05 K0 0.70 ±0.05 D0 0.55 ±0.05 D1 E 1.55 8.00 ±0.10 +0.30/-0.10 E1 1.75 ±0.10 E2 3.50 ±0.05 P0 4.00 ±0.10 P1 4.00 ±0.10 P2 2.00 ±0.10 T 0.25 ±0.05 Reel W1 S G N M K V R H W UNIT: mm Tape Size Reel Size 8mm ø178 M N W W1 H ø178.0 ±0.50 ø60.0 ±1 9.0 ±0.5 N/A ø13.0 +0.5/-0.2 K S 10.25 2.40 ±0.2 ±0.10 G R V ø9.8 N/A N/A Leader / Trailer & Orientation Trailer Tape 300mm Min. 75 Empty Pockets Rev. 1.8 December 2010 Components Tape Orientation in Pocket www.aosmd.com Leader Tape 500mm Min. 125 Empty Pockets Page 7 of 8 AOZ8802 Part Marking AOZ8802DI (1.6 x 1.0 DFN) AB3 Product Number Code Assembly Lot Code Week Code N f d e nd e m m co e r ot . s n ig s e d w e n r o This datasheet contains preliminary data; supplementary data may be published at a later date. Alpha & Omega Semiconductor reserves the right to make changes at any time without notice. LIFE SUPPORT POLICY ALPHA & OMEGA SEMICONDUCTOR PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user. Rev. 1.8 December 2010 2. A critical component in any component of a life support, device, or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. www.aosmd.com Page 8 of 8