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INA333_1

更新时间： 2024-11-17 05:39:19
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德州仪器 - TI 仪表放大器
页数 文件大小 规格书
23页 653K
描述
Micro-Power (50mA), Zero -Drift, Rail-to-Rail Out Instrumentation Amplifier

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INA333_1 数据手册

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INA333  
www.ti.com ........................................................................................................................................................ SBOS445A–JULY 2008–REVISED AUGUST 2008  
Micro-Power (50µA), Zerø-Drift, Rail-to-Rail Out  
Instrumentation Amplifier  
1
FEATURES  
DESCRIPTION  
2
•
LOW OFFSET VOLTAGE: 25µV (max), G ≥ 100  
The INA333 is a low-power, precision instrumentation  
amplifier offering excellent accuracy. The versatile  
3-op amp design, small size, and low power make it  
ideal for a wide range of portable applications.  
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LOW DRIFT: 0.1µV/°C, G ≥ 100  
LOW NOISE: 50nV/√Hz, G ≥ 100  
HIGH CMRR: 100dB (min), G ≥ 10  
A single external resistor sets any gain from 1 to  
1000. The INA333 is designed to use an  
industry-standard gain equation: G = 1 + (100kΩ/RG).  
LOW INPUT BIAS CURRENT: 200pA (max)  
SUPPLY RANGE: +1.8V to +5.5V  
INPUT VOLTAGE: (V–) +0.1V to (V+) –0.1V  
OUTPUT RANGE: (V–) +0.05V to (V+) –0.05V  
LOW QUIESCENT CURRENT: 50µA  
OPERATING TEMPERATURE: –40°C to +125°C  
RFI FILTERED INPUTS  
The INA333 provides very low offset voltage (25µV,  
G ≥ 100), excellent offset voltage drift (0.1µV/°C,  
G ≥ 100), and high common-mode rejection (100dB  
at G ≥ 10). It operates with power supplies as low as  
1.8V (±0.9V), and quiescent current is only  
50µA—ideal for battery-operated systems. Using  
autocalibration techniques to ensure excellent  
precision over the extended industrial temperature  
range, the INA333 also offers exceptionally low noise  
density (50nV/√Hz) that extends down to dc.  
MSOP-8 AND DFN-8 PACKAGES  
APPLICATIONS  
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BRIDGE AMPLIFIERS  
ECG AMPLIFIERS  
The INA333 is available in both MSOP-8 and DFN-8  
surface-mount packages and is specified over the  
TA = –40°C to +125°C temperature range.  
PRESSURE SENSORS  
MEDICAL INSTRUMENTATION  
PORTABLE INSTRUMENTATION  
WEIGH SCALES  
THERMOCOUPLE AMPLIFIERS  
RTD SENSOR AMPLIFIERS  
DATA ACQUISITION  
blank  
Sample Request  
Click Here  
V+  
7
2
VIN-  
RFI Filtered Inputs  
150kW  
150kW  
A1  
RFI Filtered Inputs  
1
50kW  
6
5
VOUT  
A3  
RG  
50kW  
8
RFI Filtered Inputs  
RFI Filtered Inputs  
150kW  
150kW  
REF  
A2  
3
VIN+  
INA333  
4
100kW  
V-  
G = 1 +  
RG  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas  
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
2
All trademarks are the property of their respective owners.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2008, Texas Instruments Incorporated  
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