Protection Design Guide for Portable Electronics - Semtech

PROTECTION PRODUCTS
MDDI Interface - Low Profile, Low Capacitance
RClamp ® 0522T and RClamp ® 0524T
The RClamp0522T and RClamp0524T are ultra-low
capacitance ESD protection devices that have been
optimized for use on next generation serial display interfaces.
Each have a typical capacitance of only 0.30pF
between I/O pins and 0.80pF between any I/O pin and
ground. This allows it to be used on circuits operating
in excess of 3GHz without signal attenuation. They
may be used to meet the ESD immunity requirements
of IEC 61000-4-2, Level 4 (±15kV air, ±8kV contact
discharge). The RClamp0522T is designed to protect
two lines, while the RClamp0524T will protect four lines.
The RClamp0522T is in a 6-pin, RoHS/WEEE compliant,
SLP1610P4T package. It measures 1.6 x 1.0 x 0.40mm.
The RClamp0524T is in a 10-pin, RoHS/WEEE compliant,
SLP2510P8T package. It measures 2.5 x 1.0 x 0.40mm.
The leads are spaced at a pitch of 0.5mm. They are
designed for easy PCB layout by allowing the traces to run
straight through the device. The leadless design and flow
through layout minimizes impedance stubs for maximum
signal integrity.
For a complete solution, the power lines should also be
protected. Here a “general purpose” single line device
such as uClamp0501P will suffice.
© 2009 Semtech Corp.
10
SI08-01
Protection Design Guide
for Portable Electronics
LCD Display - Serial & Parallel Interface
Low Capacitance MDDI/MIPI Port protection
MDDI Link
Controller
MDDI_Data0+
MDDI_Data0-
Gnd Gnd
MDDI_Data1+
MDDI_Data1-
RClamp0524T RClamp0524T
MDDI_Stb+
MDDI_Stb-
Gnd Gnd
RClamp0522T RClamp0522T
Host Pwr
RClamp0522T (1.6 x 1.0 x 0.40mm)
RClamp0524T (2.5 x 1.0 x 0.40mm)
MDDI Link
Controller
Host Gnd
HOST
uClamp0501P
uClamp0501P
DISPLAY
Pin 1 Pin 2
3, 4
1 2
Pin 1 Pin 2 Pin 4 Pin 5
10
3, 8
9
8 7 6
1 2 4 5
3
6 5 4
3
www.semtech.com