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LT1490AIMS8 PDF预览

LT1490AIMS8

更新时间: 2024-02-18 05:25:33
品牌 Logo 应用领域
凌特 - Linear 运算放大器放大器电路光电二极管
页数 文件大小 规格书
12页 205K
描述
Dual Over-The-Top Micropower Rail-to-Rail Input and Output Op Amp

LT1490AIMS8 技术参数

是否无铅: 含铅是否Rohs认证: 符合
生命周期:Active包装说明:TSSOP,
针数:8Reach Compliance Code:compliant
风险等级:5.3Samacsys Description:Op Amp Dual GP R-R I/O ±22V/44V Automotive 8-Pin MSOP T/R
放大器类型:OPERATIONAL AMPLIFIER最大平均偏置电流 (IIB):0.008 µA
标称共模抑制比:98 dB最大输入失调电压:1500 µV
JESD-30 代码:S-PDSO-G8JESD-609代码:e3
长度:3 mm湿度敏感等级:1
负供电电压上限:-22 V标称负供电电压 (Vsup):-15 V
功能数量:2端子数量:8
最高工作温度:85 °C最低工作温度:-40 °C
封装主体材料:PLASTIC/EPOXY封装代码:TSSOP
封装形状:SQUARE封装形式:SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
峰值回流温度(摄氏度):260认证状态:Not Qualified
座面最大高度:1.1 mm标称压摆率:0.07 V/us
子类别:Operational Amplifier供电电压上限:22 V
标称供电电压 (Vsup):15 V表面贴装:YES
技术:BIPOLAR温度等级:INDUSTRIAL
端子面层:Matte Tin (Sn)端子形式:GULL WING
端子节距:0.65 mm端子位置:DUAL
处于峰值回流温度下的最长时间:30标称均一增益带宽:200 kHz
宽度:3 mm

LT1490AIMS8 数据手册

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LT1490A  
Dual Over-The-Top  
Micropower Rail-to-Rail  
Input and Output Op Amp  
U
FEATURES  
DESCRIPTIO  
TheLT®1490AisanenhancedversionofthepopularLT1490  
op amp with improved input offset voltage (500µV max) and  
output voltage swing (10mV max from V). It is recom-  
mended for all new designs. The LT1490A operates on all  
single and split supplies with a total voltage of 2V to 44V,  
drawing only 40µA of quiescent current per amplifier. It is  
reverse supply protected; it draws virtually no current for  
reverse supply up to 18V. The input range of the LT1490A  
includes both supplies and the output swings to both sup-  
plies. Unlike most micropower op amps, the LT1490A can  
drive heavy loads; its rail-to-rail output drives 20mA. The  
LT1490A is unity-gain stable and drives all capacitive loads  
up to 10,000pF when optional 0.22µF and 150compensa-  
tion is used.  
Low Input Offset Voltage: 500µV Max  
Output Swings to 10mV Max from V–  
Rail-to-Rail Input and Output  
Micropower: 50µA/Amplifier Max  
MSOP Package  
Over-The-TopTM Input Common Mode Range Extends  
44V Above V, Independent of V+  
Specified on 3V, 5V and ±15V Supplies  
High Output Current: 20mA  
Output Drives 10,000pF with Output Compensation  
Reverse Battery Protection to 18V  
No Supply Sequencing Problems  
High Voltage Gain: 1500V/mV  
High CMRR: 98dB  
No Phase Reversal  
Gain Bandwidth Product: 200kHz  
The LT1490A has a unique input stage that operates and  
remains high impedance when above the positive supply.  
The inputs take 44V both differential and common mode  
even when operating on a 3V supply. Built-in resistors  
protect the inputs for faults below the negative supply up to  
15V. There is no phase reversal of the output for inputs 15V  
below Vor 44V above V, independent of V+.  
U
APPLICATIO S  
Battery- or Solar-Powered Systems  
Portable Instrumentation  
Sensor Conditioning  
Supply Current Sensing  
The LT1490A dual op amp is available in the 8-pin MSOP,  
PDIP and SO packages.  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
Over-The-Top is a trademark of Linear Technology Corporation.  
Battery Monitoring  
Micropower Active Filters  
4mA to 20mA Transmitters  
U
TYPICAL APPLICATIO  
Battery Monitor  
R
R
S
A
0.2Ω  
2k  
Q1  
2N3904  
CHARGER  
VOLTAGE  
+
R
I
A
´
1/2 LT1490A  
BATT  
2k  
1/2 LT1490A  
LOGIC  
+
R
B
Q2  
2N3904  
2k  
LOGIC HIGH (5V) = CHARGING  
LOGIC LOW (0V) = DISCHARGING  
+
R
B
´
1/2 LT1490A  
2k  
LOAD  
+
+
R
G
1/2 LT1490A  
V
OUT  
10k  
V
BATT  
= 12V  
S1  
10k  
90.9k  
14901A TA01  
V
V
=
OUT  
OUT  
S1 = OPEN, GAIN = 1  
S1 = CLOSED, GAIN = 10  
R
= R  
A
S
B
I
=
AMPS  
BATT  
(R )(R /R )(GAIN) GAIN  
V
= 5V, 0V  
S
G
A
1

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