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LMP7721MAX PDF预览

LMP7721MAX

更新时间: 2024-11-04 03:51:43
品牌 Logo 应用领域
美国国家半导体 - NSC 运算放大器放大器电路光电二极管
页数 文件大小 规格书
16页 598K
描述
3 Femtoampere Input Bias Current Precision Amplifier

LMP7721MAX 技术参数

是否Rohs认证: 不符合生命周期:Transferred
零件包装代码:SOIC包装说明:SOIC-8
针数:8Reach Compliance Code:not_compliant
ECCN代码:EAR99HTS代码:8542.33.00.01
风险等级:5.38Is Samacsys:N
放大器类型:OPERATIONAL AMPLIFIER架构:VOLTAGE-FEEDBACK
最大平均偏置电流 (IIB):0.000005 µA25C 时的最大偏置电流 (IIB):2e-8 µA
标称共模抑制比:100 dB频率补偿:YES
最大输入失调电压:450 µVJESD-30 代码:R-PDSO-G8
JESD-609代码:e0长度:4.9 mm
低-偏置:YES低-失调:YES
微功率:NO湿度敏感等级:1
功能数量:1端子数量:8
最高工作温度:125 °C最低工作温度:-40 °C
封装主体材料:PLASTIC/EPOXY封装代码:SOP
封装等效代码:SOP8,.25封装形状:RECTANGULAR
封装形式:SMALL OUTLINE包装方法:TAPE AND REEL
功率:NO电源:2/5 V
可编程功率:NO认证状态:Not Qualified
最小摆率:9.3 V/us标称压摆率:12.76 V/us
子类别:Operational Amplifiers最大压摆率:1.95 mA
供电电压上限:6 V标称供电电压 (Vsup):5 V
表面贴装:YES温度等级:AUTOMOTIVE
端子面层:Tin/Lead (Sn85Pb15)端子形式:GULL WING
端子节距:1.27 mm端子位置:DUAL
标称均一增益带宽:17000 kHz最小电压增益:12600
宽带:NO宽度:3.9 mm
Base Number Matches:1

LMP7721MAX 数据手册

 浏览型号LMP7721MAX的Datasheet PDF文件第2页浏览型号LMP7721MAX的Datasheet PDF文件第3页浏览型号LMP7721MAX的Datasheet PDF文件第4页浏览型号LMP7721MAX的Datasheet PDF文件第5页浏览型号LMP7721MAX的Datasheet PDF文件第6页浏览型号LMP7721MAX的Datasheet PDF文件第7页 
March 14, 2008  
LMP7721  
3 Femtoampere Input Bias Current Precision Amplifier  
General Description  
Features  
The LMP7721 is the industry’s lowest guaranteed input bias  
current precision amplifier. The ultra low input bias current is  
3 fA, with a guaranteed limit of ±20 fA at 25°C and ±900 fA at  
85°C. This is achieved with the latest patent pending tech-  
nology of input bias current cancellation amplifier circuitry.  
This technology also maintains the ultra low input bias current  
over the entire input common mode voltage range of the am-  
plifier.  
Unless otherwise noted, typical values at TA = 25°C, VS = 5V.  
Input bias current (VCM = 1V)  
max @ 25°C  
max @ 85°C  
Offset voltage  
±20 fA  
±900 fA  
±26 µV  
Offset voltage drift  
DC Open loop gain  
DC CMRR  
Input voltage noise (at f = 1 kHz)  
THD  
Supply current  
GBW  
Slew rate (falling edge)  
Supply voltage  
Operating temperature range  
8-Pin SOIC  
−1.5 μV/°C  
120 dB  
100 dB  
6.5 nV/Hz  
0.0007%  
Other outstanding features, such as low voltage noise (6.5  
nV/  
), low DC offset voltage (±150 µV maximum at 25°C)  
and low offset voltage temperature coefficient (−1.5 µV/°C),  
improve system sensitivity and accuracy in high precision ap-  
plications. With a supply voltage range of 1.8V to 5.5V, the  
LMP7721 is the ideal choice for battery operated portable ap-  
plications. The LMP7721 is part of the LMP® precision am-  
plifier family.  
As part of National’s PowerWise® products, the LMP7721  
provides the remarkably wide gain bandwidth product (GBW)  
of 17 MHz while consuming only 1.3 mA of current. This wide  
GBW along with the high open loop gain of 120 dB enables  
accurate signal conditioning. With these specifications, the  
LMP7721 has the performance to excel in a wide variety of  
applications such as electrochemical cell amplifiers and sen-  
sor interface circuits.  
1.3 mA  
17 MHz  
12.76 V/μs  
1.8V to 5.5V  
−40°C to 125°C  
Applications  
Photodiode amplifier  
High impedance sensor amplifier  
Ion chamber amplifier  
Electrometer amplifier  
The LMP7721 is offered in an 8-pin SOIC package with a  
special pinout that isolates the amplifier’s input from the pow-  
er supply and output pins. With proper board layout tech-  
niques, the unique pinout of the LMP7721 will prevent PCB  
leakage current from reaching the input pins. Thus system  
error will be further reduced.  
pH electrode amplifier  
Transimpedance amplifier  
Block Diagram of a Typical Application  
20204084  
Ion Chamber: Current to Voltage Converter  
LMP® is a registered trademark of National Semiconductor Corporation.  
PowerWise® is a registered trademark of National Semiconductor.  
© 2008 National Semiconductor Corporation  
202040  
www.national.com  

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