CM1214 Datasheet, PDF (5/8 Pages) List of Unclassifed Manufacturers – 1 and 2 Channel PicoGuardTM AC Signal ESD Protector

CM1214
PERFORMANCE INFORMATION (Cont’d)
Figure 5. Insertion Loss vs. Frequency (2.5 V DC Bias)
APPLICATION INFORMATION
The CM1214−01SO protects a single bipolar signal line, such as is found in RF circuits. One I/O pin (pin 1 for example)
is connected to the signal line to be protected, and the other I/O pin is tied to GND. It is important to have a solid ground
connection in order to reduce the clamping voltage. Pin 3 of the 3−lead SOT23 must be left open (not connected on the PCB).
The CM1214−02MR protects two bipolar lines, such as for Gbit Ethernet. The PCB traces underneath the package connect
across to the corresponding pins, i.e., pin 1 to pin 8 etc.
Any disturbance on the line above or below the standoff voltage is clamped.
RF ANTENNA
LNA
L
C
SIGNAL LINE
SWITCH
ESD
N.C..
PA
GND
ESD
3−Lead SOT23−3
Figure 6. Typical Application − RF Switch and Amplifier Protection,
CM1214−01SO−01SO/in 3−lead SOT23
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