Download datasheet for AOZ8802DI by Alpha and Omega Semiconductor

Download datasheet for AOZ8802DI by Alpha and Omega Semiconductor
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.
●
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
●
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.
●
●
●
.
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
Rt
D+
D+
USB
Controller
Rt
D-
DCt
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
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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
I
Maximum Reverse Leakage Current
Breakdown Voltage
IF
Forward Current
VF
Forward Voltage
PPK
Peak Power Dissipation
CJ
IF
Working Peak Reverse Voltage
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
-3
Insertion Loss (dB)
-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
2
1
e
Pin #3 Identification R 0.130
BOTTOM VIEW
A
c
A1
Dimensions in millimeters
SIDE VIEW
RECOMMENDED LAND PATTERN
c
D
E
e
L
0.40
0.20
0.50
Symbols
A
A1
b
b1
0.36
Min.
0.50
0.00
0.15
Nom.
0.55
—
0.20
0.40
Max.
0.60
0.05
0.25
0.152 Ref.
1.65
1.60
1.05
1.00
0.50 BSC
0.43
0.38
0.33
1.55
0.95
Dimensions in inches
Symbols
A
A1
b
b1
c
D
E
e
L
Min.
0.020
0.000
0.006
Nom.
0.022
—
0.008
0.016
Max.
0.024
0.002
0.010
0.061
0.037
0.006 Ref.
0.063 0.065
0.039 0.041
0.013
0.020 BSC
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
A0
DFN 1.6 x 1.0
(8 mm)
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
M
N
W
W1
H
ø178.0
±0.50
ø60.0
±1
9.0
±0.5
N/A
ø13.0
+0.5/-0.2
Tape Size Reel Size
8mm
ø178
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
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