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參數(shù)資料
| 型號： | CA3290E |
| 廠商： | INTERSIL CORP |
| 元件分類： | 運(yùn)動控制電子 |
| 英文描述： | BiMOS Dual Voltage Comparators with MOSFET Input, Bipolar Output |
| 中文描述： | DUAL COMPARATOR, 20000 uV OFFSET-MAX, 1200 ns RESPONSE TIME, PDIP8 |
| 封裝： | PLASTIC, DIP-8 |
| 文件頁數(shù)： | 6/8頁 |
| 文件大小： | 347K |
| 代理商： | CA3290E |
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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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| CA3290S | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog IC |
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| CA3292 WAF | 制造商:Harris Corporation 功能描述: |
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