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LT1490ACDD

更新时间： 2024-02-25 20:50:16
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 340K
描述
Dual/Quad Over-The-Top Micropower Rail-to-Rail Input and Output Op Amps

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LT1490ACDD 技术参数

是否Rohs认证：符合生命周期：Transferred
零件包装代码：DFN包装说明：HVSON, SOLCC8,.11,20
针数：8Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.03Is Samacsys：N
放大器类型：OPERATIONAL AMPLIFIER架构：VOLTAGE-FEEDBACK
最大平均偏置电流 (IIB)：0.008 µA25C 时的最大偏置电流 (IIB)：0.0003 µA
标称共模抑制比：98 dB频率补偿：YES
最大输入失调电压：1700 µVJESD-30 代码：S-PDSO-N8
JESD-609代码：e3长度：3 mm
低-偏置：NO低-失调：NO
微功率：YES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：HVSON
封装等效代码：SOLCC8,.11,20封装形状：SQUARE
封装形式：SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE包装方法：TAPE AND REEL
峰值回流温度（摄氏度）：260功率：NO
电源：3/5/+-15 V可编程功率：NO
认证状态：Not Qualified座面最大高度：0.8 mm
最小摆率：0.03 V/us标称压摆率：0.07 V/us
子类别：Operational Amplifier最大压摆率：0.17 mA
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：NO LEAD端子节距：0.5 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最小电压增益：50000
宽带：NO宽度：3 mm
Base Number Matches：1

LT1490ACDD 数据手册

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LT1490A/LT1491A  
Dual/Quad Over-The-Top  
Micropower Rail-to-Rail  
Input and Output Op Amps  
U
FEATURES  
DESCRIPTIO  
■
®
Low Input Offset Voltage: 500µV Max  
The LT 1490A/LT1491A are dual and quad op amps with a  
Output Swings to 10mV Max from V–  
Rail-to-Rail Input and Output  
■
lowinputoffsetvoltageof500µVmax.TheLT1490A/LT1491A  
operate on all single and split supplies with a total voltage of  
2V to 44V, drawing only 40µA of quiescent current per  
amplifier. These amplifiers are reverse supply protected;  
they draw virtually no current for reverse supply up to 18V.  
The input range of the LT1490A/LT1491A includes both  
suppliesandtheoutputswingstobothsupplies. Unlikemost  
micropower op amps, the LT1490A/LT1491A can drive  
heavy loads; their rail-to-rail outputs drive 20mA. The  
LT1490A/LT1491A are unity-gain stable and drive all capaci-  
tive loads up to 10,000pF when optional 0.22µF and 150Ω  
compensation is used.  
■
■
■
Micropower: 50µA/Amplifier Max  
Over-The-Top® 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  
Tiny 3mm × 3mm × 0.8mm DFN Package  
■
■
■
■
■
■
■
■
■
■
The LT1490A/LT1491A have a unique input stage that oper-  
ates 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  
U
APPLICATIO S  
■
Battery- or Solar-Powered Systems  
Portable Instrumentation  
Sensor Conditioning  
–
–
+
below V or 44V above V , independent of V .  
■
Supply Current Sensing  
The LT1490A dual op amp is available in the 8-pin MSOP,  
PDIP and SO packages. For space limited applications  
LT1490A is available in a 3mm × 3mm × 0.8mm, dual fine  
pitchleadlesspackage(DFN). ThequadLT1491Aisavailable  
in the 14-pin SO, PDIP and 5mm × 3mm × 0.8mm DFN  
packages.  
■
Battery Monitoring  
■
Micropower Active Filters  
■
4mA to 20mA Transmitters  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
Over-The-Top is a registered trademark of Linear Technology Corporation.  
Protected by U.S. Patents including 5825228.  
U
Battery Monitor  
TYPICAL APPLICATIO  
R
R
S
A
0.2Ω  
2k  
Q1  
2N3904  
CHARGER  
VOLTAGE  
+
R
A
I
´
1/4 LT1491A  
BATT  
–
2k  
1/4 LT1491A  
LOGIC  
–
+
R
B
Q2  
2N3904  
2k  
LOGIC HIGH (5V) = CHARGING  
LOGIC LOW (0V) = DISCHARGING  
+
R
B
´
1/4 LT1491A  
2k  
–
LOAD  
+
+
R
G
1/4 LT1491A  
V
OUT  
10k  
V
BATT  
= 12V  
–
S1  
10k  
90.9k  
1490A 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
sn1490, 14901afbs  
1
1234567...16

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LT1490ACDD#PBF Linear LT1490A - Dual Over-The-Top Micropower Rail-to-Rail Input and Output Op Amps; Package: DFN

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LT1490ACDD#TR Linear Operational Amplifier, 2 Func, 1550uV Offset-Max, BIPolar, PDSO8

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LT1490ACDD#TRPBF Linear Dual Over-The-Top Micropower Rail-to-Rail Input and Output Op Amps

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LT1490ACMS8#TRPBF Linear LT1490A - Dual Over-The-Top Micropower Rail-to-Rail Input and Output Op Amps; Package: MSO

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