參數(shù)資料
型號(hào)： LT1051
廠商： Linear Technology Corporation
元件分類(lèi)： 運(yùn)動(dòng)控制電子
英文描述： Dual/Quad Precision Zero-Drift Operational Amplifiers With Internal Capacitors
中文描述： 雙/四路精密零漂移運(yùn)算放大器電容器內(nèi)部
文件頁(yè)數(shù)： 11/16頁(yè)
文件大?。?/td> 294K
代理商： LT1051
11
LTC1051/LTC1053
10513fa
–
+
–
+
–
+
A
B
1/2
LTC1051
1/2
LTC1051
A1
R1
1
R2
1
2
2
3
3
OUT
OUT
R3
R4
R5
C1
C2
5
6
6
7
8
5V
+
–
1051/53 AC01a
A1
R1
3k
R2
2k
57
R3
340k
250k
R4
10k
10k
R5
100k
100k
C1
C2
e
OUT
(DC – 1Hz)**
0.1
μ
V
P-P
0.3
μ
V
P-P
e
OUT
(DC – 10Hz)**
0.15
μ
V
P-P
0.4
μ
V
P-P
LT1007
LT1012*
0.01
μ
F
0.01
μ
F
0.001
μ
F
0.001
μ
F
750
Obtaining Ultralow V
OS
Drift and Low Noise
The dual chopper op amp buffers the inputs of A1 and
corrects its offset voltage and offset voltage drift. With the
R, C values shown, the power-up warm up time is typically
20 seconds. The step response of the composite amplifier
does not present settling tails. The LT1007 should be used
when extremely low noise; V
OS
and V
OS
drift are sought
when the input source resistance is low—for instance a
350
strain gauge bridge. The LT1012 or equivalent
should be used when low bias current (100pA) is also
required in conjunction with DC to 10Hz low noise and low
V
OS
and V
OS
drift. The measured typical input offset
voltages were less than 2
μ
V.
V
S
=
±
5V
DC TO 10Hz
NOISE
1 SEC/DIV
0
μ
V
1051/53 AC01b
DC TO 1Hz
NOISE
LTC1051/LT1007 Peak-to-Peak Noise
TYPICAL APPLICATIO S
* Interchange connections A and B .
** Noise measured in a 10 sec window. Peak-to-peak noise was also measured for 10 continuous minutes: With the LT1007 op amp the recorded noise was less than 0.2
μ
V
P-P
for both DC-1Hz
and DC-10Hz.
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