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參數(shù)資料
| 型號： | LMC6584BIN |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 運動控制電子 |
| 英文描述： | Low Voltage, Rail-To-Rail Input and Output CMOS Operational Amplifier |
| 中文描述： | QUAD OP-AMP, 3000 uV OFFSET-MAX, 1.2 MHz BAND WIDTH, PDIP14 |
| 封裝： | PLASTIC, DIP-14 |
| 文件頁數(shù)： | 10/19頁 |
| 文件大?。?/td> | 678K |
| 代理商： | LMC6584BIN |
Typical Performance Characteristics
V
S
+ = 3V, Single Supply, T
A
= 25C unless otherwise
specified. (Continued)
Application Information
1.0 Input Common-Mode Voltage
Range
The LMC6582/4 has a rail-to-rail input common-mode volt-
age range. Figure 1 shows an input voltage exceeding both
supplies with no resulting phase inversion on the output.
The absolute maximum input voltage at V
+
= 3V is 300 mV
beyond either supply rail at room temperature. Voltages
greatly exceeding this absolute maximum rating, as in Figure
2 can cause excessive current to flow in or out of the input
pins, possibly affecting reliability. The input current can be
externally limited to
±
5 mA, with an input resistor, as shown
in Figure 3
2.0 Rail-to-Rail Output
The approximated output resistance of the LMC6582 is 50
sourcing, and 50
sinking at V
= 3V. The maximum output
swing can be estimated as a function of load using the calcu-
lated output resistance.
3.0 Low Voltage Operation
The LMC6582/4 operates at supply voltages of 2.2V and
1.8V. These voltages represent the End of Discharge volt-
ages of several popular batteries. The amplifier can operate
from 1 Lead-Acid or Lithium Ion battery, or 2NiMH, NiCd, or
Carbon-Zinc batteries. Nominal and End of Discharge of
Voltage of several batteries are listed below.
Stability vs
Capacitive Load
DS012041-53
Stability vs
Capacitive Load
DS012041-54
Stability vs
Capacitive Load
DS012041-55
DS012041-3
FIGURE 1. An Input Signal Exceeds the LMC6582
Power Supply Voltages with No Output Phase
Inversion
DS012041-4
FIGURE 2. A
±
7.5V Input Signal Greatly
Exceeds the 3V Supply,
Causing No Phase Inversion Due to R
I
DS012041-5
FIGURE 3. Input Current Protection for
Voltages Exceeding the Supply Voltage
www.national.com
10
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