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LT1124AI

更新时间： 2024-11-22 22:34:27
品牌 Logo 应用领域
凌特 - Linear 运算放大器
页数 文件大小 规格书
16页 231K
描述
Dual/Quad Low Noise, High Speed Precision Op Amps

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LT1124AI 数据手册

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LT1124/LT1125  
Dual/Quad Low Noise,  
High Speed Precision Op Amps  
U
FEATURES  
DESCRIPTIO  
The LT®1124 dual and LT1125 quad are high performance  
op amps that offer higher gain, slew rate and bandwidth  
than the industry standard OP-27 and competing OP-270/  
OP-470 op amps. In addition, the LT1124/LT1125 have  
lower IB and IOS than the OP-27; lower VOS and noise  
than the OP-270/OP-470.  
■
100% Tested Low Voltage Noise: 2.7nV/√Hz Typ  
4.2nV/√Hz Max  
■
Slew Rate: 4.5V/µs Typ  
■
Gain Bandwidth Product: 12.5MHz Typ  
■
Offset Voltage, Prime Grade: 70µV Max  
Low Grade: 100µV Max  
■
High Voltage Gain: 5 Million Min  
In the design, processing and testing of the device, par-  
ticular attention has been paid to the optimization of the  
entire distribution of several key parameters. Slew rate,  
gain bandwidth and 1kHz noise are 100% tested for each  
individual amplifier. Consequently, the specifications of  
even the lowest cost grades (the LT1124C and the  
LT1125C) have been spectacularly improved compared  
■
Supply Current Per Amplifier: 2.75mA Max  
■
Common Mode Rejection: 112dB Min  
■
Power Supply Rejection: 116dB Min  
■
Available in 8-Pin SO Package  
U
APPLICATIO S  
■
Two and Three Op Amp Instrumentation Amplifiers  
Low Noise Signal Processing  
Active Filters  
Microvolt Accuracy Threshold Detection  
Strain Gauge Amplifiers  
Direct Coupled Audio Gain Stages  
Tape Head Preamplifiers  
to equivalent grades of competing amplifiers.  
■
■
■
■
■
■
■
Power consumption of the LT1124 is one half of two  
OP-27s. Low power and high performance in an 8-pin SO  
packagemaketheLT1124afirstchoiceforsurfacemounted  
systems and where board space is restricted.  
For a decompensated version of these devices, with three  
times higher slew rate and bandwidth, please see the  
LT1126/LT1127 data sheet.  
Infrared Detectors  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
Protected by U.S. patents 4,775,884 and 4,837,496.  
U
TYPICAL APPLICATIO  
Instrumentation Amplifier with Shield Driver  
Input Offset Voltage Distribution  
3
+
(All Packages, LT1124 and LT1125)  
1k  
30k  
1
1/4  
LT1125  
–
2
R
F
758 DUALS  
200 QUADS  
V
= ±15V  
= 25°C  
S
A
15V  
4
3.4k  
T
30  
20  
10  
0
2316 UNITS  
TESTED  
5
6
GUARD  
+
R
G
7
1/4  
LT1125  
100Ω  
OUTPUT  
30k  
10  
+
–
+
–
11  
8
1/4  
LT1125  
R
G
INPUT  
100Ω  
9
–15V  
–
GUARD  
GAIN = 30 (1 + R /R ) ≈ 1000  
F
G
POWER BW = 170kHz  
SMALL-SIGNAL BW = 400kHz  
R
F
13  
12  
NOISE = 3.8µV/√Hz AT OUTPUT  
= 35µV  
–
3.4k  
V
OS  
14  
–100  
–60  
–20  
20  
60  
100  
1/4  
LT1125  
INPUT OFFSET VOLTAGE (µV)  
1k  
+
1124/25 TA02  
1124/25 TA01  
1
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