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INA2321

更新时间： 2024-11-13 04:23:07
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BB 仪表放大器
页数 文件大小 规格书
21页 500K
描述
microPower, Single-Supply, CMOS Instrumentation Amplifier

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INA2321 数据手册

 浏览型号INA2321的Datasheet PDF文件第2页浏览型号INA2321的Datasheet PDF文件第3页浏览型号INA2321的Datasheet PDF文件第4页浏览型号INA2321的Datasheet PDF文件第5页浏览型号INA2321的Datasheet PDF文件第6页浏览型号INA2321的Datasheet PDF文件第7页 
INA321  
INA2321  
SBOS168D − DECEMBER 2000 − REVISED JANUARY 2006  
microPower, Single-Supply, CMOS  
Instrumentation Amplifier  
FD EATURES  
AD PPLICATIONS  
D
LOW QUIESCENT CURRENT: 40µA/channel  
Shut Down: < 1µA  
INDUSTRIAL SENSOR AMPLIFIERS:  
Bridge, RTD, Thermistor, Position  
PHYSIOLOGICAL AMPLIFIERS:  
ECG, EEG, EMG  
D
HIGH GAIN ACCURACY: G = 5, 0.02%,  
2ppm/°C  
D
D
D
D
D
D
D
GAIN SET WITH EXTERNAL RESISTORS  
LOW OFFSET VOLTAGE: 200µV  
HIGH CMRR: 94dB  
D
D
D
D
D
D
D
A/D CONVERTER SIGNAL CONDITIONING  
DIFFERENTIAL LINE RECEIVERS WITH GAIN  
FIELD UTILITY METERS  
PCMCIA CARDS  
COMMUNICATION SYSTEMS  
TEST EQUIPMENT  
LOW BIAS CURRENT: 10pA  
BANDWIDTH: 500kHz, G = 5V/V  
RAIL-TO-RAIL OUTPUT SWING: (V+) − 0.02V  
WIDE TEMPERATURE RANGE:  
−55°C to +125°C  
SINGLE VERSION IN MSOP-8 PACKAGE AND  
DUAL VERSION IN TSSOP-14 PACKAGE  
AUTOMOTIVE INSTRUMENTATION  
D
CMRR vs FREQUENCY  
120  
DESCRIPTION  
100  
INA321  
The INA321 family is a series of rail-to-rail output,  
micropower CMOS instrumentation amplifiers that offer  
wide-range, single-supply, as well as bipolar-supply  
operation. The INA321 family provides low-cost, low-noise  
amplification of differential signals with micropower  
current consumption of 40µA. When shutdown, the  
INA321 has a quiescent current of less than 1µA.  
Returning to normal operations within microseconds, the  
shutdown feature makes the INA321 optimal for  
low-power battery or multiplexing applications.  
80  
10x  
Nearest  
Competition  
Improvement  
60  
40  
10  
100  
1k  
10k  
Frequency (Hz)  
Configured internally for 5V/V gain, the INA321 offers  
exceptional flexibility with user-programmable external  
gain resistors. The INA321 reduces common-mode error  
over frequency and with CMRR remaining high up to 3kHz,  
line noise and line harmonics are rejected.  
R
R
2
1
RG  
160kΩ  
40kΩ  
40kΩ  
160kΩ  
REF  
The low-power design does not compromise on bandwidth  
or slew rate, making the INA321 ideal for driving sample  
Analog-to-Digital (A/D) converters as well as  
general-purpose applications. With high precision, low  
cost, and small packaging, the INA321 outperforms  
discrete designs, while offering reliability and  
performance.  
A1  
V
OUT  
A3  
V
V
IN  
−
A2  
IN+  
Gain = 5 + 5(R2/R1)  
V
= (V  
− V ) • Gain  
IN  
−
OUT  
IN+  
−
Shutdown  
V+  
V
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.  
All trademarks are the property of their respective owners.  
ꢀꢁ ꢂ ꢃꢄ ꢅ ꢆꢇ ꢂꢈ ꢃ ꢉꢆꢉ ꢊꢋ ꢌꢍ ꢎ ꢏꢐ ꢑꢊꢍꢋ ꢊꢒ ꢓꢔ ꢎ ꢎ ꢕꢋꢑ ꢐꢒ ꢍꢌ ꢖꢔꢗ ꢘꢊꢓ ꢐꢑꢊ ꢍꢋ ꢙꢐ ꢑꢕꢚ ꢀꢎ ꢍꢙꢔ ꢓꢑꢒ  
ꢓ ꢍꢋ ꢌꢍꢎ ꢏ ꢑꢍ ꢒ ꢖꢕ ꢓ ꢊ ꢌꢊ ꢓ ꢐ ꢑꢊ ꢍꢋꢒ ꢖ ꢕꢎ ꢑꢛꢕ ꢑꢕ ꢎ ꢏꢒ ꢍꢌ ꢆꢕꢜ ꢐꢒ ꢇꢋꢒ ꢑꢎ ꢔꢏ ꢕꢋꢑ ꢒ ꢒꢑ ꢐꢋꢙ ꢐꢎ ꢙ ꢝ ꢐꢎ ꢎ ꢐ ꢋꢑꢞꢚ  
ꢀꢎ ꢍ ꢙꢔꢓ ꢑ ꢊꢍ ꢋ ꢖꢎ ꢍ ꢓ ꢕ ꢒ ꢒ ꢊꢋ ꢟ ꢙꢍ ꢕ ꢒ ꢋꢍꢑ ꢋꢕ ꢓꢕ ꢒꢒ ꢐꢎ ꢊꢘ ꢞ ꢊꢋꢓ ꢘꢔꢙ ꢕ ꢑꢕ ꢒꢑꢊ ꢋꢟ ꢍꢌ ꢐꢘ ꢘ ꢖꢐ ꢎ ꢐꢏ ꢕꢑꢕ ꢎ ꢒꢚ  
Copyright 2000-2006, Texas Instruments Incorporated  
www.ti.com  
1234567...21

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