CM1214A
Performance Information
Typical Capacitance Characteristics vs. Voltage
Figure 1
illustrates how the loading capacitance
remains mainly flat across the voltage range from 0V to
5V, the voltage between CH pins.
Typical Voltage-Current (VI) Characteristics (high
current, pulse condition)
shows how the CM1214A experiences a
symmetrical I/V curve, without any snapback or trigger
voltage. The curve shows only one polarity.
10
9
8
7
6
5
4
3
2
0
1
2
Voltage [V]
3
4
5
Capacitance vs. Voltage (measured at 1MHz)
1.2
1.1
1
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
Capacitance [pF]
Current [uA]
1
0
0
1
2
3
4
5
6
7
8
Figure 1. CM1214A Capacitance vs. Voltage
Typical Voltage Current (VI) Characteristics (low
current)
shows how the CM1214A experiences a
symmetrical I/V curve, without any snapback or trigger
voltage. It gradually starts to turn on at about 6V and
clamps about 7V.
10
9
8
7
6
4
3
2
1
0
0
1
2
3
4
5
6
7
8
Input Capacitance (pF)
Voltage [V]
Figure 3. CM1214A VI Characteristics,
Low Current, Pulse (clamping) Condition
Typical
Capacitance
Temperature
Characteristics
vs.
illustrates the loading capacitance for both
0VDC and 1.65VDC input across the -40 to 85°C
temperature range.
Current [uA]
0.660
0.640
0.620
0.600
0.580
0.560
0.540
0.520
-50
-25
0
25
50
Temperature (°C)
75
100
0V DC Input Bias
1.65V DC Input Bias
5
Voltage [V]
Figure 2. CM1214A VI Characteristics, Low Current
Figure 4. CM1214A Capacitance vs. Temperature
© 2007 California Micro Devices Corp. All rights reserved.
4
490 N. McCarthy Blvd., Milpitas, CA 95035-5112
●
Tel: 408.263.3214
Issue A – 10/29/07
●
Fax: 408.263.7846
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CALMIRCO [ CALIFORNIA MICRO DEVICES CORP ]
