Enhanced ESD protection and EMI filters for audio/video interfaces

Enhanced ESD protection and EMI
filters for audio/video interfaces
Advanced ultra-low capacitance protection and
high-attenuation audio filters
In the past couple of years, the multimedia capabilities of
mobile phones greatly progressed. They will continue to
evolve for many years as processing performance
continues to increase rapidly and the cost of adding
complex multimedia functionality decreases.
High-definition displays and cameras are already part of
multimedia phones. Now enhanced gaming, MP3 and TV
on mobile are driving high-quality audio output and
high-resolution video output interfaces.
Most probably, the coming years will see mobile handsets
becoming portable multimedia set-top boxes.
With ASD and IPAD™ devices, STMicroelectronics’ experience is sustaining the evolution towards more multimedia
capabilities by simplifying interface implementation in today’s disrupted environments with the widest range of audio/
video ESD and EMI guards.
Key features and benefits
„„
EMIF02-MIC06F3
„„
„„
„„
„„
„„
„„
„„
„„
2-line symmetrical low-pass filter
Low cut-off frequency thanks to high-density
capacitor integration (4 nF)
- 60 dB attenuation from 10 MHz to 3 GHz
High efficiency in ESD suppression
IEC 61000-4-2 level 4
Very low PCB space: <1.5 mm²
Very thin package: 0.65 mm
High reduction of parasitic elements through
integration and wafer level packaging
EMIF01-TV02F3
„„
„„
„„
„„
„„
„„
„„
„„
HDMIULC6-4F3
„„
„„
„„
„„
„„
„„
4-line ESD protection for TMDS lines
Ultra low line capacitance: 0.7 pF
Flow-through layout for type C HDMI connector
Very low leakage current: 3 nA.
Low PCB space – 1.76 mm² footprint
High efficiency in ESD suppression
IEC 61000-4-2 level 4
www.st.com/protection
„„
User-customizable filtering solution with external
inductor
8 MHz video bandwidth
Very high attenuation at 27 MHz
Ultra-low standby power consumption, ideal for
portable applications
Accurate 75 Ω ± 5% impedance matching for
current-output video DENC
High efficiency in ESD suppression
IEC 61000-4-2 level 4
High reliability offered by monolithic integration
HDMI05-CL02F3
„„
„„
„„
„„
„„
Control-line ESD protection
Low line capacitance: 12 pF max.
Integrates pull-down resistor on HPD and pull-up
resistors on CEC, SDA and SCL lines
Low PCB space – 1.44 mm² footprint
High efficiency in ESD suppression
IEC 61000-4-2 level 4
Targeted applications
„„
HDMI ports up to 3.2 Gbit/s
Digital serial interfaces
MIPI D-PHY interfaces
„„
Headsets and internal microphones
„„
„„
Analog CVBS interfaces
„„
HDMI block diagram
HDMI
Host
(mobile phone)
Gnd
TX2-
Gnd
TX2-
TX2+
TX2+
Gnd
TX1-
TX1-
TX1+
TX1+
Gnd
Gnd
video
Gnd
HDMIULC6-4F3
TX0-
TX0-
TX0+
Multimedia
controller
audio
Display
(TV, flat panel,
monitor, projector)
video
TX0+
Gnd
Gnd
TC-
TC-
TC+
TC+
Ctrl /
status
Ctrl /
status
HDMI05-CL02F3
Gnd
audio
Multimedia
controller
Gnd
CEC
CEC
SCL
SCL
SDA
SDA
V DD _5V
V DD _5V
HPD
HPD
Type C connector
pin-out
EMIF02-MIC06F3 block diagram
MIC BIAS
450Hz
EMIF02-MIC06F3
MIC1P
Mic bias
50 k
Audio
F
f 3dB2
Attenuation
2.2 k
MIC1P
bandwidth
F
50 k
F
MIC1N
50 
2.2 k
MIC1N
Mic bias
1 k
Low-pass filter
3 MHz
F
Low-pass filter
70 kHz
© STMicroelectronics - January 2009 - Printed in Italy - All rights reserved
The STMicroelectronics corporate logo is a registered trademark of the STMicroelectronics group of companies.
All other names are the property of their respective owners.
For more information on ST products and solutions,
visit www.st.com
Order code: FLESDPROT0109
3MHz
Frequency
f 3dB1
50 
Electret
microphone
70kHz
High-pass
filter 450 Hz
1k
f 3dB3