CM1236
Performance Information
Graphical Comparison and Test Setup
Figure 5 shows that the CM1236 (ESD protector) lowers the peak voltage and clamping voltage by 45% across a wide range
of loading conditions in comparison to a standard ESD protection device. Figure 6 also indicates that the DUP/ASIC protected
by the CM1236 dissipates less energy than a standard ESD protection device. This data was derived using the test setups shown
in Figure 7.
1.2
Vpeak
0.5
Residual Current (Peak)
STD ESD Device
1.0
0.8
0.4
STD ESD Device
0.6
0.4
0.2
CM1236
0.3
0.2
0.1
CM1236
0
5
10
20
0
5
10
20
RDUP ( W )
Figure 5. V CLAMP vs. RDUP* (ASIC) – 8 kV
Contract Strike
RDUP ( W )
Figure 6. I RESIDUAL vs. RDUP* (ASIC) – 8 kV
Contract Strike
*RDUP is the emulated Dynamic Resistance (load) of the Device Under Protection (DUP). See Figure 7.
IEC 61000 ? 4 ? 2
Test Standards
Voltage
Probe
IEC 61000 ? 4 ? 2
Test Standards
Voltage
Probe
CM1236
Standard
ESD Device
Device Under
Protection (DUP)
R VARIABLE
Device Under
Protection (DUP)
R VARIABLE
Standard ESD
Device Test Setup
Current
Probe
I RESIDUAL
CM1236 Test Setup
Current
Probe
I RESIDUAL
Figure 7. Test Setups: Standard Device (Left) and CM1236 (Right)
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