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LT1167AI

更新时间： 2024-10-31 22:34:19
品牌 Logo 应用领域
凌特 - Linear 仪表放大器
页数 文件大小 规格书
20页 429K
描述
Single Resistor Gain Programmable, Precision Instrumentation Amplifier

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LT1167  
Single Resistor Gain  
Programmable, Precision  
Instrumentation Amplifier  
U
FEATURES  
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)  
isnotcompromisedbylowpowerdissipation(0.9mAtypical  
for ±2.3V to ±15V supplies).  
■
Single Gain Set Resistor: G = 1 to 10,000  
■
Gain Error: G = 10, 0.08% Max  
■
Gain Nonlinearity: G = 10, 10ppm Max  
Input Offset Voltage: G = 10, 60µV Max  
■
■
Input Offset Voltage Drift: 0.3µV/°C Max  
■
■
■
■
■
■
■
■
■
Input Bias Current: 350pA Max  
PSRR at G = 1: 105dB Min  
CMRR at G = 1: 90dB Min  
Supply Current: 1.3mA Max  
Wide Supply Range: ±2.3V to ±18V  
1kHz Voltage Noise: 7.5nV/√Hz  
0.1Hz to 10Hz Noise: 0.28µVP-P  
Available in 8-Pin PDIP and SO Packages  
Meets IEC 1000-4-2 Level 4 ESD Tests with  
Two External 5k Resistors  
The high accuracy of 10ppm maximum nonlinearity and  
0.08% max gain error (G = 10) is not degraded even for load  
resistors as low as 2k (previous monolithic instrumentation  
amps used 10k for their nonlinearity specifications). The  
LT1167 is laser trimmed for 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.  
U
APPLICATIONS  
■
TheLT1167,offeredin8-pinPDIPandSOpackages,requires  
significantly less PC board area than discrete multi op amp  
andresistordesigns.TheseadvantagesmaketheLT1167the  
most cost effective solution for precision instrumentation  
amplifier applications.  
Bridge Amplifiers  
■
Strain Gauge Amplifiers  
■
Thermocouple Amplifiers  
■
Differential to Single-Ended Converters  
Medical Instrumentation  
■
, LTC and LT are registered trademarks of Linear Technology Corporation.  
U
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
R4  
50k  
5
6
5
+
–
R3  
50k  
7
1/2  
LT1490  
1167 TA02  
R7  
50k  
R8  
100k  
VOLTS INCHES Hg  
0.2% ACCURACY AT 25°C  
1.2% ACCURACY AT 0°C TO 60°C  
= 8V TO 30V  
OUTPUT VOLTAGE (2V/DIV)  
G = 1000  
= 1k  
OUT  
2.800  
3.000  
3.200  
28.00  
30.00  
32.00  
R
L
V
S
V
= ±10V  
1167 TA01  
1
1234567...20

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