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LT1167

更新时间： 2024-09-26 14:57:55
品牌 Logo 应用领域
亚德诺 - ADI 放大器仪表仪表放大器电阻器
页数 文件大小 规格书
22页 359K
描述
可利用单个电阻器来设置增益的精准型仪表放大器

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中文翻译

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LT1167 数据手册

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LT1167  
Single Resistor Gain  
Programmable, Precision  
Instrumentation Amplifier  
DESCRIPTION  
The LT®1167 is a low power, precision instrumentation  
amplifier that requires only one external resistor to set  
gains of 1 to 10,000. The low voltage noise of 7.5nV/√Hz  
(at 1kHz) is not compromised by low power dissipation  
(0.9mA typical for 2.3V to 15V supplies).  
The part’s high accuracy (10ppm maximum nonlinearity,  
0.08% max gain error (G = 10)) is not degraded even for  
loadresistorsaslowas2k.TheLT1167islasertrimmedfor  
very low input offset voltage (40μV max), drift (0.3μV/°C),  
high CMRR (90dB, G = 1) and PSRR (105dB, G = 1).  
Low input bias currents of 350pA max are achieved with  
the use of superbeta processing. The output can handle  
capacitive loads up to 1000pF in any gain configuration  
while the inputs are ESD protected up to 13kV (human  
body). The LT1167 with two external 5k resistors passes  
the IEC 1000-4-2 level 4 specification.  
FEATURES  
n
Single Gain Set Resistor: G = 1 to 10,000  
n
Gain Error: G = 10, 0.08% Max  
n
Input Offset Voltage Drift: 0.3μV/°C Max  
n
Meets IEC 1000-4-2 Level 4 ESD Tests with  
Two External 5k Resistors  
n
Gain Nonlinearity: G = 10, 10ppm Max  
n
Input Offset Voltage: G = 10, 60μV Max  
n
Input Bias Current: 350pA Max  
n
PSRR at G = 1: 105dB Min  
n
CMRR at G = 1: 90dB Min  
n
Supply Current: 1.3mA Max  
n
Wide Supply Range: 2.3V to 18V  
n
1kHz Voltage Noise: 7.5nV/√Hz  
n
0.1Hz to 10Hz Noise: 0.28μV  
P-P  
n
Available in 8-Pin PDIP and SO Packages  
APPLICATIONS  
The LT1167, offered in 8-pin PDIP and SO packages, re-  
quires significantly less PC board area than discrete multi  
op amp and resistor designs.  
n
Bridge Amplifiers  
■
Strain Gauge Amplifiers  
■
Thermocouple Amplifiers  
TheLT1167-1offersthesameperformanceastheLT1167,  
but its input current characteristic at high common mode  
voltagebettersupportsapplicationswithhighinputimped-  
ance (see the Applications Information section).  
■
Differential to Single-Ended Converters  
■
Medical Instrumentation  
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear  
Technology Corporation. All other trademarks are the property of their respective owners.  
TYPICAL APPLICATION  
Single Supply Barometer  
V
S
Gain Nonlinearity  
R5  
LUCAS NOVA SENOR  
NPC-1220-015-A-3L  
V
S
392k  
3
2
8
+
–
1
3
–
+
2
1
–
1
7
1/2  
LT1490  
4
1
2
5k  
5k  
LT1634CCZ-1.25  
R1  
4
6
825Ω  
LT1167  
G = 60  
R6  
1k  
R2  
12Ω  
5k  
2
6
5k  
5
8
3
TO  
4-DIGIT  
DVM  
+
R
SET  
4
OFFSET R4  
ADJUST 50k  
5
6
5
+
–
1167 TA02  
R3  
50k  
OUTPUT VOLTAGE (2V/DIV)  
7
1/2  
LT1490  
G = 1000  
R
= 1k  
L
V
= 10V  
R7  
50k  
OUT  
R8  
100k  
VOLTS INCHES Hg  
0.2% ACCURACY AT 25°C  
1.2% ACCURACY AT 0°C TO 60°C  
= 8V TO 30V  
2.800  
3.000  
3.200  
28.00  
30.00  
32.00  
V
S
1167 TA01  
1167fc  
1
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