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LT1881

更新时间： 2024-11-27 22:51:47
品牌 Logo 应用领域
凌特 - Linear 运算放大器
页数 文件大小 规格书
12页 187K
描述
Dual and Quad Rail-to-Rail Output, Picoamp Input Precision Op Amps

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LT1881 数据手册

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Final Electrical Specifications  
LT1881/LT1882  
Dual and Quad  
Rail-to-Rail Output,  
Picoamp Input Precision Op Amps  
U
April 2000  
DESCRIPTIO  
FEATURES  
The LT®1881 and LT1882 op amps bring high accuracy  
■
Offset Voltage: 50µV Maximum (LT1881A)  
Input Bias Current: 200pA Maximum (LT1881A)  
Offset Voltage Drift: 0.8µV/°C Maximum  
Rail-to-Rail Output Swing  
■
■
■
■
■
■
■
■
■
input performance to amplifiers with rail-to-rail output  
swing. Input bias currents and capacitive load driving  
capabilitiesaresuperiortothesimilarLT1884andLT1885  
amplifiers, at the cost of a slight loss in speed. Input  
offset voltage is trimmed to less than 50µV and the low  
drift maintains this accuracy over the operating tempera-  
ture range. Input bias currents are an ultralow 200pA  
maximum.  
Supply Range: 2.7V to 36V  
Operates with Single or Split Supplies  
Open-Loop Voltage Gain: 1 Million Minimum  
1mA Maximum Supply Current Per Amplifier  
Stable at AV = 1, CL = 1000pF  
Standard Pinouts  
The amplifiers work on any total power supply voltage  
between 2.7V and 36V (fully specified from 5V to ±15V).  
Output voltage swings to within 40mV of the negative  
supply and 220mV of the positive supply make these  
amplifiers good choices for low voltage single supply  
operation.  
U
APPLICATIO S  
■
Thermocouple Amplifiers  
■
Bridge Transducer Conditioners  
■
Instrumentation Amplifiers  
Capacitive loads up to 1000pF can be driven directly in  
unity-gain follower applications.  
■
Battery-Powered Systems  
■
Photo Current Amplifiers  
The dual LT1881 and LT1881A are available with standard  
pinouts in S8 and PDIP packages. The quad LT1882 is in  
a 14-pin SO package. For a higher speed device with  
similar DC specifications, see the LT1884/LT1885.  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
U
TYPICAL APPLICATIO  
TC VOS Distribution, Industrial Grade  
16-Bit Voltage Output DAC on ±5V Supply  
5V  
26  
24  
22  
20  
18  
16  
14  
12  
10  
8
V
= ±15V  
S
5V  
40 N8 (1 LOT)  
144 S8 (2 LOTS)  
184 TOTAL PARTS  
1.65k  
+
LT1881  
–
LT1634  
4.096V  
–5V  
6
4
2
0
R1  
R
REF  
R
OFS  
COM  
33pF  
1
–0.9–0.8–0.7–0.6–0.5–0.4–0.3–0.2–0.1  
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9  
1
5V  
LT1881  
–5V  
INPUT OFFSET VOLTAGE DRIFT (µV/°C)  
DAC  
–
+
1881/2 TA01a  
V
OUT  
–4.096V  
TO 4.096V  
LTC®1597  
1881/2 TA01  
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.  
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-  
tationthattheinterconnectionofitscircuitsasdescribedhereinwillnotinfringeonexistingpatentrights.  
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