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LT1784

更新时间： 2024-11-22 14:58:27
品牌 Logo 应用领域
亚德诺 - ADI 放大器运算放大器
页数 文件大小 规格书
12页 199K
描述
采用 SOT-23 封装的 2.5MHz、Over-The-Top 低功率、轨至轨输入和输出运算放大器

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中文翻译

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LT1784 数据手册

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LT1784  
2.5MHz, Over-The-Top  
Low Power, Rail-to-Rail Input  
and Output Op Amp in SOT-23  
DESCRIPTION  
FEATURES  
+
The LT®1784 is a 2.5MHz op amp available in the small  
SOT-23packagethatoperatesonallsingleandsplitsupplies  
withatotalvoltageof2.5Vto18V. Theamplifierdrawsless  
than 750μA of quiescent current and has reverse battery  
protection, drawing negligible current for reverse supply  
voltages up to 18V.  
n
Operates with Inputs Above V  
n
Rail-to-Rail Input and Output  
Gain Bandwidth Product: 2.5MHz  
Slew Rate: 2.1V/μs  
n
n
n
n
n
n
n
n
n
n
n
n
Low Input Offset Voltage: 3.5mV Max  
High Voltage Gain: 1000V/mV  
Single Supply Input Range: 0V to 18V  
Specified on 3V, 5V and 5V Supplies  
Reverse Battery Protection to 18V  
Low Power: 750μA Supply Current Max  
Output Shutdown on 6-Lead Version  
High Output Current: 15mA Min  
The input range of the LT1784 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.  
Operating Temperature Range: –40°C to 85°C  
Low Profile (1mm) ThinSOT™ Package  
The LT1784 can drive loads up to 15mA 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  
LT1784 op amp is available in the 5- and 6-lead SOT-23  
packages. For applications requiring lower power, refer to  
the LT1782 and LT1783 data sheets.  
APPLICATIONS  
n
Portable Instrumentation  
n
Battery-Powered Systems  
n
Sensor Conditioning  
n
Supply Current Sensing  
MUX Amplifiers  
n
n
4mA to 20mA Transmitters  
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.  
TYPICAL APPLICATION  
Programmable Gain, AV = 2, AV = 20, 100kHz Amplifier  
Programmable Gain Amplifier  
Frequency Response  
V
CC  
30  
A
= 20  
A = 2  
V
V
25  
A
V
= 20  
SHDN  
20  
15  
V
CC  
IN  
+
10  
OUT  
LT1784  
SHDN  
5
V
CC  
A
V
= 2  
–
0
+
V
EE  
–5  
LT1782  
–10  
–15  
–20  
–
R1 + R2  
R3  
A
= 1+  
V
(
(
)
)
V
EE  
1k  
10k  
100k  
FREQUENCY (Hz)  
1M  
10M  
R1  
R1  
10k  
R2  
9.09k  
OR 1+  
R2 + R3  
1784 TA01b  
R3  
1k  
1784 TA01a  
1784fa  
1
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