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参数资料
| 型号： | CA3290A |
| 厂商： | Intersil Corporation |
| 英文描述： | BiMOS Dual Voltage Comparators with MOSFET Input, Bipolar Output |
| 中文描述： | BiMOS双电压比较器与MOSFET的输入，双极性输出 |
| 文件页数： | 6/8页 |
| 文件大小： | 347K |
| 代理商： | CA3290A |
6
Low-Frequency Multivibrator
In this application, one half of the CA3290 is used as a
conventional multivibrator circuit. Because of the extremely
high input impedance of this device, large values of timing
resistor (R
1
) may be used for long time delays with relatively
small leakage timing capacitors. The second half of the
CA3290 is used as an output buffer to insure that the
multivibrator frequency will not be affected by output loading.
R
P
is the parallel combination of the two 1M
resistors
connected between +15V and GND.
Window Comparator
Both halves of the CA3290 can be used in a high input
impedance window comparator as shown in Figure 7. The
LED will be turned “on” whenever the input signal is above
the lower limit (V
L
) but below the upper limit (V
U
), as
determined by the R
1
/R
2
/R
3
resistor divider.
+
CA3290
-
+15V
A
2
7
6
5
3.3k
1M
+
-
CA3290
A
1
1
8
4
+15V
2
3
15k
1M
+15V
20M
R
P
1M
1M
+15V
0.36
μ
F
R
2
1M
t
Period
10s
=
=
t
2R
1
Cloge
-----------
1
+
=
R
1
C
FIGURE 6. LOW FREQUENCY MULTIVIBRATOR
+
-
CA3290
A
2
+
-
CA3290
A
1
1
7
8
4
670
3.9k
LED
2N2102
2
3
6
5
R
3
6.8k
V
L
V
U
100k
R
1
100k
+15V
+15V
INPUT
47k
R
2
47k
FIGURE 7. WINDOW COMPARATOR
Typical Performance Curves
FIGURE 8. SUPPLY CURRENT vs SUPPLY VOLTAGE (BOTH
AMPLIFIERS)
FIGURE 9. INPUT CURRENT vs INPUT COMMON MODE
VOLTAGE
R
L
=
∞
-55
o
C
125
o
C
25
o
C
TOTAL SUPPLY VOLTAGE (V)
0
5
10
15
20
25
30
35
40
45
S
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
T
A
= 25
o
C
V+ = +30V, V- = GND
INPUT COMMON MODE VOLTAGE (V)
15
35
I
-15
-10
-5
0
-20
-25
-300
5
10
20
25
30
CA3290, CA3290A
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相关代理商/技术参数 |
参数描述 |
|---|---|
| CA3290AE | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:BiMOS Dual Voltage Comparators with MOSFET Input, Bipolar Output |
| CA3290AE1 | 制造商:Rochester Electronics LLC 功能描述:DUAL BIMOS VOLTAGE COMPARATER 14 PDIP COM - Bulk |
| CA3290AS | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog Comparator |
| CA3290BT | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Harris Corporation 功能描述: |
| CA3290E | 制造商: 功能描述: 制造商:undefined 功能描述: 制造商:RCA 功能描述: |
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