AOZ8510 Datasheet, PDF (1/7 Pages) Alpha & Omega Semiconductors – 8-Line EMI Filter with Integrated ESD Protection

AOZ8510
8-Line EMI Filter with Integrated ESD Protection
General Description
The AOZ8510 is an 8-line device integrating EMI filtering
with ESD protection for each line. It is designed to
suppress unwanted EMI/RFI signals and provide electro-
static discharge (ESD) protection in portable electronic
equipment. This state-of-the-art device utilizes AOS
leading edge Trench Vertical Structure [TVS]² ™
technology for superior clamping performance and filter
attenuation over the full operating display range. The
AOZ8510 has been optimized for protection of color LCD
displays and CCD camera lines in cellular phones and
other portable consumer electronic devices.
The AOZ8510 consists of eight identical circuits
comprised of TVS diodes for ESD protection, and a
inductor–capacitor network for EMI/RFI filtering providing
a cutoff frequency at 155MHz for high speed data lines.
An inductor value of 56nH and a capacitance value of
17pF are used to achieve -40dB minimum attenuation
from 800MHz to 3.0GHz. The TVS diodes provide
effective suppression of ESD voltages in excess of
±24kV (air discharge) and ±18kV (contact discharge).
This exceeds IEC 61000-4-2, level 4 ESD immunity test.
The AOZ8510 comes in an RoHS compliant,
1.6mm x 4.0mm TDFN package and is rated over a
-40°C to +85°C ambient temperature range.
Features
● 8 lines for EMI filtering and ESD protection:
– Exceeds IEC 61000-4-2, level 4 (ESD) immunity test
– ±24kV (air discharge) and ±18kV (contact discharge)
● Trench Vertical Structure [TVS]² ™ based technology
used to achieve excellent ESD clamping & filter
performance over the full operating display range
● Filter performance: -40db attenuation from 800MHz to
3.0GHz
● Low operating voltage: 5.0V
● Capacitance stability over wide range of voltages and
temperatures
● TDFN package: 1.6 x 4.0mm
● Pb-free device
Applications
● EMI filtering and ESD protection for data lines
● LCD displays, camera interface, I/O interface
● Portable handheld devices, cell phones,
PDA phones
Typical Application
D0
CH1
L1
L2
C1 C2 C3
D1
CH2
L1
L2
C1 C2 C3
LCD/Camera
Module
D7
CH8
Rev. 1.5 September 2010
L1
L2
C1 C2 C3
Figure 1.
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