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INA145 PDF预览

INA145

更新时间: 2024-11-04 02:58:39
品牌 Logo 应用领域
德州仪器 - TI 放大器
页数 文件大小 规格书
15页 319K
描述
Programmable Gain DIFFERENCE AMPLIFIER

INA145 数据手册

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®
INA145  
INA145  
For most current data sheet and other product  
information, visit www.burr-brown.com  
Programmable Gain  
DIFFERENCE AMPLIFIER  
FEATURES  
DESCRIPTION  
DIFFERENTIAL GAIN = 1V/V TO 1000V/V:  
The INA145 is a precision, unity-gain difference  
amplifier consisting of a precision op amp and on-  
chip precision resistor network. Two external resistors  
set the gain from 1V/V to 1000V/V. The input com-  
mon-mode voltage range extends beyond the positive  
and negative rails.  
Set with External Resistors  
LOW QUIESCENT CURRENT: 570µA  
WIDE SUPPLY RANGE:  
Single Supply: 4.5V to 36V  
Dual Supplies: ±2.25V to ±18V  
On-chip precision resistors are laser-trimmed to achieve  
accurate gain and high common-mode rejection. Ex-  
cellent TCR tracking of these resistors assures contin-  
ued high precision over temperature.  
HIGH COMMON-MODE VOLTAGE:  
+8V at VS = +5V  
±28V at VS = ±15V  
LOW GAIN ERROR: 0.01%  
HIGH CMR: 86dB  
The INA145 is available in the SO-8 surface-mount  
package specified for the extended industrial tempera-  
ture range, –40°C to +85°C.  
SO-8 PACKAGE  
APPLICATIONS  
CURRENT SHUNT MEASUREMENTS  
SENSOR AMPLIFIER  
DIFFERENTIAL LINE RECEIVER  
BATTERY POWERED SYSTEMS  
RG1  
RG2  
V+  
RG  
7
5
R1  
R2  
40kΩ  
40kΩ  
2
VIN–  
R5  
10kΩ  
A2  
(1%)  
VO  
6
G = 1  
R3  
A1  
V
O = (VI+N – VIN)(1 + RG2/RG1  
)
R4  
40kΩ  
40kΩ  
3
VIN+  
INA145  
4
1
8
V–  
Ref  
V01  
International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: (520) 746-1111  
Twx: 910-952-1111 • Internet: http://www.burr-brown.com/ • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132  
©1999 Burr-Brown Corporation  
PDS-1567B  
Printed in U.S.A. March, 2000  
SBOS120  

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