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| 型號(hào)： | LMC6684BIN |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 運(yùn)算放大器 |
| 英文描述： | Low Voltage, Rail-To-Rail Input and Output CMOS |
| 中文描述： | QUAD OP-AMP, 3000 uV OFFSET-MAX, 1.2 MHz BAND WIDTH, PDIP16 |
| 封裝： | PLASTIC, DIP-16 |
| 文件頁(yè)數(shù)： | 1/24頁(yè) |
| 文件大小： | 750K |
| 代理商： | LMC6684BIN |
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LMC6681 Single/LMC6682 Dual/LMC6684 Quad
Low Voltage, Rail-To-Rail Input and Output CMOS
Amplifier with Powerdown
General Description
The LMC6681/2/4 is a high performance operational ampli-
fier which can operate over a wide range of supply voltages,
with guaranteed specifications at 1.8V, 2.2V, 3V, 5V, and
10V.
The LMC6681/2/4 provides an input common-mode voltage
range that exceeds both supplies. The rail-to-rail output
swing of the amplifier assures maximum dynamic signal
range. This rail-to-rail performance of the amplifier, com-
bined with its high open-loop voltage gain makes it unique
among CMOS rail-to-rail amplifiers. The LMC6681/2/4 is an
excellent choice for circuits where the common-mode volt-
age range is a concern.
The LMC6681/2/4 has a powerdown mode which can be
controlled externally. In this powerdown mode, the supply
current decreases from 700 μA per amplifier to less than 1
μA per amplifier. The LMC6684 has two powerdown options.
Each of the powerdown pins disables two amplifiers.
The LMC6681/2/4 has been designed specifically to improve
system performance in low voltage applications. The ampli-
fier’s 80 fA input current, 0.5 mV offset voltage, and 82 dB
CMRR maintain accuracy in battery-powered systems.
Features
(Typical unless otherwise noted)
n
Guaranteed Specs at 1.8V, 2.2V, 3V, 5V, 10V
n
Rail-to-Rail Input Common-Mode Voltage Range
n
Rail-to-Rail Output Swing
(within 10 mV of supply rail,
@
V
S
=3V and R
L
=10 k
)
n
Powerdown Mode
I
≤
1.5 μA/Amplifier
(Guaranteed at V
S
= 1.8V, 2.2V, 3V, and 5V)
n
Ultra Low Input Current
80 fA
n
High Voltage Gain (V
S
= 3V, R
L
= 10 k
):
n
Unity Gain Bandwidth
1.2 MHz
120 dB
Applications
n
Battery Operated Circuits
n
Sensor Amplifiers
n
Portable Communication Devices
n
Medical Instrumentation
n
Battery Monitoring Circuits
n
Level Detectors, Sample-and-Hold Circuits
Connection Diagrams
8-Pin DIP/SO
DS012042-1
Top View
14-Pin DIP/SO
DS012042-2
Top View
16-Pin DIP/SO
DS012042-3
Top View
May 1995
L
A
1999 National Semiconductor Corporation
DS012042
www.national.com
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