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參數(shù)資料
| 型號： | 540 |
| 元件分類： | 比較器 |
| 英文描述： | COMPARATOR, 10000 uV OFFSET-MAX, PDIP10 |
| 封裝： | DIP-16 |
| 文件頁數(shù)： | 4/7頁 |
| 文件大?。?/td> | 248K |
| 代理商： | 540 |
A
2401 Stanwell Drive Concord, California 94520 Ph: 925/687-4411 or 800/542-3355 Fax: 925/687-3333 www.calex.com Email: sales@calex.com
4
4/2001
Model 540 Voltsensor
Applications
FIGURE 6. Model 540 Connected For Current-Sourcing Mode
Figure 6 shows the connections for current-source operation.
In this mode the Model 540 is short-circuit protected for +VS of
+5V to +15V. If short-circuit and current limiting protection is
desired for +VS of +16V to +32V, a 100
2W resistor should
be connected between +Vs and pin 1. Output voltage in the
current-source mode is +V
S - (3.5V + 10
I
L). Figure 7 is a
graph of output voltage versus load current for current source
operation. Output leakage does not exceed 1 A.
FIGURE 4. Model 540 Connected For Current-Sinking Mode
The connections for current-sinking operation are shown
above in Figure 4. In this mode the Model 540 is short-circuit
protected and current-limited at 140 mA. The diode across the
output transistor protects the transistor against possible back
bias. Of the two output modes, current-sinking is more desirable
because there is less power dissipation in the low output
state. When the voltage at the NON INVERTING input is more
positive than the voltage at the INVERTING input, the IC
comparator switches to the high logic state. This causes the
output transistor to saturate, which will then energize the load.
Figure 5 is a graph of output voltage versus load current for the
saturated output transistor. Output leakage does not exceed
1 A.
0
2040
6080
100
LOAD CURRENT (mA)
0.00
0.20
0.40
0.60
0.80
Vo(SAT)
(VDC)
OUTPUT VOLTAGE FOR CURRENT-SINKING MODE
(LOW Logic State)
0
2040
6080
100
LOAD CURRENT (mA)
0
5
10
15
20
25
30
OUTPUT
VOLTAGE
Vo
(VDC)
MAXIMUM OUTPUT FOR CURRENT-SOURCING MODE
(HIGH Logic State)
Vs = 5V
Vs = 15V
Vs = 24V
Vs = 32V
FIGURE 5.
FIGURE 7.
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