參數(shù)資料
型號(hào)： LBMM
廠(chǎng)商： Linear Integrated Systems
英文描述： Precision, 100UA Gain Selectable Amplifier
中文描述： 精密，100uA的可選增益放大器
文件頁(yè)數(shù)： 3/24頁(yè)
文件大小： 311K
代理商： LBMM
LT1991
3
1991fb
SYMBOL
V
CM
PARAMETER
Input Voltage Range (Note 7)
CONDITIONS
P1/M1 Inputs, P9/M9 Connected to REF
V
S
=
±
15V; V
REF
= 0V
V
S
= 5V, 0V; V
REF
= 2.5V
V
S
= 3V, 0V; V
REF
= 1.25V
P3/M3 Inputs
V
S
=
±
15V; V
REF
= 0V
V
S
= 5V, 0V; V
REF
= 2.5V
V
S
= 3V, 0V; V
REF
= 1.25V
P9/M9 Inputs
V
S
=
±
15V; V
REF
= 0V
V
S
= 5V, 0V; V
REF
= 2.5V
V
S
= 3V, 0V; V
REF
= 1.25V
LT1991AMS, V
S
= 5V, 0V
MIN
TYP
MAX
UNITS
●
●
●
–60
–14
–1.5
60
16.8
7.3
V
V
V
●
●
●
–15.2
0.5
0.95
15.2
4.2
1.95
V
V
V
●
●
●
–15.2
0.85
1.0
15.2
3.9
1.9
50
135
80
160
100
200
150
250
1
5
7.5
500
750
1000
1500
V
V
V
V
OS
Op Amp Offset Voltage (Note 8)
15
μ
V
μ
V
μ
V
μ
V
μ
V
μ
V
μ
V
μ
V
●
LT1991AMS, V
S
=
±
15V
15
●
LT1991MS
25
●
LT1991DD
25
●
V
OS
/
T
I
B
Op Amp Offset Voltage Drift (Note 6)
Op Amp Input Bias Current
●
0.3
2.5
μ
V/
°
C
nA
nA
pA
pA
pA
pA
●
I
OS
Op Amp Input Offset Current
LT1991A
50
●
LT1991
50
●
Op Amp Input Noise Voltage
0.01Hz to 1Hz
0.01Hz to 1Hz
0.1Hz to 10Hz
0.1Hz to 10Hz
G = 1; f = 1kHz
G = 9; f = 1kHz
P1 (M1 = Ground)
P3 (M3 = Ground)
P9 (M9 = Ground)
M1 (P1 = Ground)
M3 (P3 = Ground)
M9 (P9 = Ground)
450k Resistors, LT1991A
Other Resistors, LT1991A
450k Resistors, LT1991
Other Resistors, LT1991
Resistor Matching
Absolute Value
V
S
=
±
1.35V to
±
18V (Note 8)
0.35
0.07
0.25
0.05
180
46
900
600
500
450
150
50
0.01
0.02
0.02
0.04
0.3
–30
135
2.4
μ
V
P-P
μ
V
RMS
μ
V
P-P
μ
V
RMS
nV/
√
Hz
nV/
√
Hz
e
n
Input Noise Voltage Density
R
IN
Input Impedance (Note 10)
●
●
●
630
420
350
315
105
35
1170
780
650
585
195
65
0.04
0.06
0.08
0.12
3
k
k
k
k
k
k
%
%
%
%
●
●
●
R
Resistor Matching
(Note 9)
●
●
●
●
R/
T
Resistor Temperature Coefficient (Note 6)
●
●
ppm/
°
C
ppm/
°
C
PSRR
Power Supply Rejection Ratio
Minimum Supply Voltage
●
105
dB
V
●
2.7
The
●
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25
°
C. Difference amplifier configuration, V
S
= 5V, 0V or
±
15V;
V
CM
= V
REF
= half supply, unless otherwise noted.
ELECTRICAL CHARACTERISTICS
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