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參數(shù)資料
| 型號(hào)： | 3583JM |
| 元件分類： | 運(yùn)算放大器 |
| 英文描述： | High Voltage, High Current OPERATIONAL AMPLIFIER |
| 中文描述： | 高電壓，大電流運(yùn)算放大器 |
| 文件頁(yè)數(shù)： | 5/6頁(yè) |
| 文件大小： | 113K |
| 代理商： | 3583JM |
5
3583
TYPICAL PERFORMANCE CURVES (CONT)
T
CASE = +25°C, ±VCC = 150VDC, unless otherwise noted.
3583
0.1F
V+
–50V to –150V
R
2
R
1
V
O
G = 1 +
R
2
R
1
Connect case
to ground.
V–
+50V to +150V
3
4
100k
V+
Optional offset
voltage trim
circuit.
V
IN
3583
FIGURE 1. Basic Circuit Connections.
APPLICATION INFORMATION
Figure 1 shows the basic connections required to operate the
3583. Power supply bypass capacitors should be connected
close to the device pins. Be sure that these capacitors have an
adequate voltage rating.
Input offset voltage and drift of the 3583 are laser-trimmed.
Many applications require no external offset trimming.
Figure 1 also shows connection of an optional offset trim
potentiometer connected to pins 3 and 4.
FET input circuitry reduces the input bias current of the 3583
to less than 20pA at room temperature. Input bias current
remains nearly constant throughout the full common-mode
range. Input bias current approximately doubles for each 10
°C
increase in case temperature above 25
°C. Heat sinking can
help minimize this effect by reducing the case temperature.
Input circuitry of the 3583 is protected with series limiting
resistors and input clamp diodes. The inputs can withstand the
full rated supply voltage of
±150V (common-mode or differ-
ential).
THERMAL PROTECTION
The 3583 has internal thermal shut-down circuitry that acti-
vates at a case temperature of approximately 150
°C or higher.
As this circuitry is activated, the output current drive is
reduced. As the case temperature returns to less than the
activation temperature, operation will return to normal. A heat
sink may be required depending on load and signal conditions.
Note that a 75mA output may not be safe for all output
voltages—see typical performance curve “Safe Operating
Area”. Applications such as current sources where output
voltage may be low (or the opposite polarity of the output
current) can overstress the output stage.
The thermal shut-down circuit will normally protect the
amplifier during a short-circuit to ground. It will not protect
against short-circuit to one of the power supplies. The typical
performance curve “Safe Operating Area” shows that the
large stress occurring during this high voltage condition may
cause damage if it exceeds 5ms duration. The thermal
protection circuitry will not activate fast enough to protect
the device from short-circuits to one of the power supplies.
The package case of the 3583 is electrically isolated from all
circuitry. No special insulating hardware is required.
Although not absolutely required, it is recommended that the
case be connected to ground.
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