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LT1783I

更新时间： 2024-11-21 12:05:03
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 164K
描述
1.25MHz, Over-The-Top Micropower, Rail-to-Rail Input and Output Op Amp in SOT-23

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LT1783I 数据手册

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LT1783  
1.25MHz, Over-The-Top  
Micropower, Rail-to-Rail Input  
and Output Op Amp in SOT-23  
DESCRIPTION  
FEATURES  
+
The LT®1783 is a 1.25MHz op amp available in the small  
SOT-23packagethatoperatesonallsingleandsplitsupplies  
withatotalvoltageof2.5Vto18V. Theamplifierdrawsless  
than 300μA of quiescent current and has reverse-battery  
protection, drawing negligible current for reverse supply  
voltages up to 18V.  
n
Operates with Inputs Above V  
Rail-to-Rail Input and Output  
n
n
Micropower: 300μA Supply Current Max  
Operating Temperature Range: –40°C to 125°C  
Gain Bandwidth Product: 1.25MHz  
Slew Rate: 0.42V/μs  
Low Input Offset Voltage: 800μV Max  
Single Supply Input Range: 0V to 18V  
High Output Current: 18mA Min  
n
n
n
n
n
n
n
n
n
n
n
The input range of the LT1783 includes ground, and a  
unique feature of this device is its Over-The-Top® opera-  
tion capabilitity with either or both of its inputs above the  
positive rail. The inputs handle 18V both differential and  
common mode, independent of supply voltage. The input  
stage incorporates phase reversal protection to prevent  
false outputs from occurring even when the inputs are 9V  
below the negative supply.  
Specified on 3V, 5V and 5V Supplies  
Output Shutdown on 6-Lead Version  
Reverse-Battery Protection to 18V  
High Voltage Gain: 1500V/mV  
Low Profile (1mm) ThinSOT™ Package  
The LT1783 can drive loads up to 18mA and still maintain  
rail-to-rail capability. A shutdown feature on the 6-lead  
version can disable the part, making the output high  
impedance and reducing quiescent current to 5μA. The  
LT1783 op amp is available in the 5- and 6-lead SOT-23  
packages. For applications requiring lower power, refer  
to the LT1782.  
APPLICATIONS  
n
Portable Instrumentation  
n
Battery- or Solar-Powered Systems  
n
Sensor Conditioning  
n
Supply Current Sensing  
Battery Monitoring  
MUX Amplifiers  
n
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L, LT, LTC, LTM, Linear Technology, the Linear logo and Over-The-Top are registered  
trademarks of Linear Technology Corporation. ThinSOT is a trademark of Linear Technology  
Corporation. All other trademarks are the property of their respective owners.  
n
4mA to 20mA Transmitters  
TYPICAL APPLICATION  
Positive Supply Rail Current Sense  
Distribution of Input Offset Voltage  
25  
+
V
V
V
= 5V, 0V  
CM  
S
5V TO 18V  
= 2.5V  
200Ω  
20  
15  
10  
5
5V  
0.2Ω  
+
2N3904  
V
LT1783  
200Ω  
= 2Ω(I  
)
LOAD  
–
OUT  
0V TO 4.3V  
I
2k  
LOAD  
LOAD  
1783 TA01  
0
–900 –600 –300  
0
300  
600  
900  
INPUT OFFSET VOLTAGE (μV)  
1783 TA01b  
1783fd  
1
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