电子工程世界电子工程世界电子工程世界

关键词

搜索

型号

搜索

LT1490ACMS8

产品描述Dual/Quad Over-The-Top Micropower Rail-to-Rail Input and Output Op Amps
产品类别模拟混合信号IC    放大器电路   
文件大小340KB,共16页
制造商Linear ( ADI )
官网地址http://www.analog.com/cn/index.html
下载文档 详细参数 选型对比 全文预览

LT1490ACMS8概述

Dual/Quad Over-The-Top Micropower Rail-to-Rail Input and Output Op Amps

LT1490ACMS8规格参数

参数名称属性值
Brand NameLinear Technology
是否Rohs认证不符合
厂商名称Linear ( ADI )
零件包装代码MSOP
包装说明PLASTIC, MSOP-8
针数8
制造商包装代码MS8
Reach Compliance Code_compli
ECCN代码EAR99
放大器类型OPERATIONAL AMPLIFIER
架构VOLTAGE-FEEDBACK
最大平均偏置电流 (IIB)0.008 µA
25C 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1350 µV
JESD-30 代码S-PDSO-G8
JESD-609代码e0
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70 °C
最低工作温度
封装主体材料PLASTIC/EPOXY
封装代码TSSOP
封装等效代码TSSOP8,.19
封装形状SQUARE
封装形式SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
峰值回流温度(摄氏度)235
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1.1 mm
最小摆率0.031 V/us
标称压摆率0.07 V/us
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COMMERCIAL
端子面层Tin/Lead (Sn/Pb)
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20
标称均一增益带宽200 kHz
最小电压增益75000
宽带NO
宽度3 mm

文档预览

下载PDF文档
LT1490A/LT1491A
Dual/Quad Over-The-Top
Micropower Rail-to-Rail
Input and Output Op Amps
FEATURES
DESCRIPTIO
Low Input Offset Voltage: 500
µ
V Max
Output Swings to 10mV Max from V
Rail-to-Rail Input and Output
Micropower: 50µA/Amplifier Max
µ
®
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
Battery- or Solar-Powered Systems
Portable Instrumentation
Sensor Conditioning
Supply Current Sensing
Battery Monitoring
Micropower Active Filters
4mA to 20mA Transmitters
The LT
®
1490A/LT1491A are dual and quad op amps with a
low input offset voltage of 500µV max. The LT1490A/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
supplies and the output swings to both supplies. Unlike most
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.
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
below V
or 44V above V
, independent of V
+
.
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
pitch leadless package (DFN). The quad LT1491A is available
in the 14-pin SO, PDIP and 5mm
×
3mm
×
0.8mm DFN
packages.
APPLICATIO S
, 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.
TYPICAL APPLICATIO
CHARGER
VOLTAGE
Battery Monitor
R
S
0.2Ω
I
BATT
RA
2k
R
A
´
2k
+
1/4 LT1491A
Q1
2N3904
1/4 LT1491A
LOGIC
Q2
2N3904
+
R
B
2k
R
B
´
2k
LOAD
+
1/4 LT1491A
LOGIC HIGH (5V) = CHARGING
LOGIC LOW (0V) = DISCHARGING
R
G
10k
S1
10k
+
1/4 LT1491A
V
OUT
+
V
BATT
= 12V
90.9k
1490A TA01
V
OUT
V
I
BATT
=
=
OUT
AMPS
(R
S
)(R
G
/R
A
)(GAIN) GAIN
S1 = OPEN, GAIN = 1
S1 = CLOSED, GAIN = 10
R
A
= R
B
V
S
= 5V, 0V
U
sn1490, 14901afbs
U
U
1

LT1490ACMS8相似产品对比

LT1490ACMS8 LT1490A LT1490A_1 LT1491A
描述 Dual/Quad Over-The-Top Micropower Rail-to-Rail Input and Output Op Amps Dual/Quad Over-The-Top Micropower Rail-to-Rail Input and Output Op Amps Dual/Quad Over-The-Top Micropower Rail-to-Rail Input and Output Op Amps Dual/Quad Over-The-Top Micropower Rail-to-Rail Input and Output Op Amps

 
EEWorld订阅号

 
EEWorld服务号

 
汽车开发圈

 
机器人开发圈

About Us 关于我们 客户服务 联系方式 器件索引 网站地图 最新更新 手机版

站点相关: 大学堂 TI培训 Datasheet 电子工程 索引文件: 1181  960  1216  2089  1646  24  20  25  43  34 

器件索引   0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

北京市海淀区中关村大街18号B座15层1530室 电话:(010)82350740 邮编:100190

电子工程世界版权所有 京B2-20211791 京ICP备10001474号-1 电信业务审批[2006]字第258号函 京公网安备 11010802033920号 Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved