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INA21281KE4 PDF预览

INA21281KE4

更新时间： 2024-11-23 12:08:39
品牌 Logo 应用领域
德州仪器 - TI 仪表放大器
页数 文件大小 规格书
17页 721K
描述
Dual, Low Power INSTRUMENTATION AMPLIFIER

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INA21281KE4 数据手册

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INA2128  
INA2128  
I
N
A
2
1
2
8
SBOS035A – DECEMBER 1995 – REVISED APRIL 2007  
Dual, Low Power  
INSTRUMENTATION AMPLIFIER  
DESCRIPTION  
FEATURES  
TheINA2128isadual, lowpower, generalpurposeinstrumen-  
tation amplifier offering excellent accuracy. Its versatile  
3-op amp design and small size make it ideal for a wide range  
of applications. Current-feedback input circuitry provides wide  
bandwidth even at high gain (200kHz at G = 100).  
ꢀ LOW OFFSET VOLTAGE: 50µV max  
ꢀ LOW DRIFT: 0.5µV/°C max  
ꢀ LOW INPUT BIAS CURRENT: 5nA max  
ꢀ HIGH CMR: 120dB min  
ꢀ INPUTS PROTECTED TO ±40V  
ꢀ WIDE SUPPLY RANGE: ±2.25V to ±18V  
ꢀ LOW QUIESCENT CURRENT: 700µA / IA  
ꢀ 16-PIN PLASTIC DIP, SOL-16  
A single external resistor sets any gain from 1 to 10,000.  
Internal input protection can withstand up to ±40V without  
damage.  
The INA2128 is laser-trimmed for very low offset voltage  
(50µV), drift (0.5µV/°C) and high common-mode rejection  
(120dB at G ≥ 100). It operates with power supplies as low as  
±2.25V, and quiescent current is only 700µA per IA—ideal for  
battery-operated and multiple-channel systems.  
APPLICATIONS  
ꢀ SENSOR AMPLIFIER  
THERMOCOUPLE, RTD, BRIDGE  
The INA2128 is available in SOL-16 packages, specified  
for the –40°C to +85°C temperature range.  
ꢀ MEDICAL INSTRUMENTATION  
ꢀ MULTIPLE-CHANNEL SYSTEMS  
ꢀ BATTERY OPERATED EQUIPMENT  
V+  
9
INA2128  
–
1
3
Over-Voltage  
Protection  
VINA  
7
A1A  
25kΩ  
50kΩ  
GA = 1 +  
40kΩ  
40kΩ  
RGA  
6
5
A3A  
VOA  
RGA  
4
2
25kΩ  
A2A  
RefA  
+
Over-Voltage  
Protection  
VINA  
40kΩ  
40kΩ  
40kΩ  
–
16  
14  
Over-Voltage  
Protection  
VINB  
10  
11  
12  
50kΩ  
A1B  
25kΩ  
GB = 1 +  
40kΩ  
RGB  
A3B  
VOB  
RGB  
13  
15  
25kΩ  
A2B  
RefB  
+
Over-Voltage  
Protection  
VINB  
40kΩ  
40kΩ  
8
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.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of Texas Instruments  
standard warranty. Production processing does not necessarily include  
testing of all parameters.  
Copyright © 1995-2007, Texas Instruments Incorporated  
www.ti.com  
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