2011-06-27
5
ESD0P4RFL
1. Application example ESD0P4RFL
1 RF signal channel, anti-parallel configuration
The protection diode should be
placed very close to the location
where the ESD or other transients
can occur to keep loops and
inductances as small as possible.
Grounded pins should be
connected in parallel directly to a
ground plane on the board.
ESD
sensitive
circuit
I/O
1 protected signal line,
superimposed DC voltage up to
±VF (diode forward volatge)
Line to ground capacitance
0.4 pF @1 GHz
2. Application example ESD0P4RFL
1 RF signal channel, rail-to-rail configuration
Cathode of one diode should be
connected to the positive supply
voltage +Vcc and anode of the
opposite diode should be
connected directly to a ground
plane on the board. Clamped
input voltage at I /O port is limited
to Vcc + VF at positive transients
and 0V - VF at negative transients
(VF ... diode forward voltage
drop).
+Vcc
ESD
sensitive
circuit
I/O
1 protected signal line,
superimposed DC voltage up to
+Vcc (voltage supply)
Line to ground capacitance
0.4 pF @1 GHz