LT1991 Linear Technology, LT1991 Datasheet - Page 3

• Manufacturer Part Number: LT1991
• Description: Precision / 100uA Gain Selectable Amplifier
• Manufacturer: Linear Technology

ELECTRICAL CHARACTERISTICS
temperature range of 0°C to 70°C for C-grade parts and –40°C to 85°C for I-grade parts, otherwise specifi cations are at T
Difference amplifi er confi guration, V
SYMBOL
ΔG
GNL
ΔG/ΔT
CMRR
V
V
ΔV
IB
I
e
OS
n
CM
OS
OS
/ΔT
PARAMETER
Gain Error
Gain Nonlinearity
Gain Drift vs Temperature (Note 6)
Common Mode Rejection Ratio,
Referred to Inputs (RTI)
Input Voltage Range (Note 7)
Op Amp Offset Voltage (Note 8)
Op Amp Offset Voltage Drift (Note 6)
Op Amp Input Bias Current (Note 11)
Op Amp Input Offset Current (Note 11)
Op Amp Input Noise Voltage
Input Noise Voltage Density
S
= 5V, 0V or ±15V; V
CONDITIONS
V
G = 1; LT1991A
G = 1; LT1991
G = 3 or 9; LT1991A
G = 3 or 9; LT1991
V
V
V
G = 9; LT1991A
G = 3; LT1991A
G = 1; LT1991A
Any Gain; LT1991
P1/M1 Inputs
V
V
V
P1/M1 Inputs, P9/M9 Connected to REF
V
V
V
P3/M3 Inputs
V
V
V
P9/M9 Inputs
V
V
V
LT1991AMS, V
LT1991AMS, V
LT1991MS
LT1991DD
LT1991A
LT1991
0.01Hz to 1Hz
0.01Hz to 1Hz
0.1Hz to 10Hz
0.1Hz to 10Hz
G = 1; f = 1kHz
G = 9; f = 1kHz
CM
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
= ±15V, V
= ±15V; V
= ±15V; V
= ±15V; V
= ±15V; V
= 5V, 0V; V
= 3V, 0V; V
= ±15V; V
= 5V, 0V; V
= 3V, 0V; V
= ±15V; V
= 5V, 0V; V
= 3V, 0V; V
= ±15V; V
= 5V, 0V; V
= 3V, 0V; V
The
= V
l
REF
denotes the specifi cations which apply over the operating
OUT
OUT
OUT
CM
REF
REF
REF
REF
= half supply, unless otherwise noted.
REF
REF
REF
REF
REF
REF
REF
REF
S
S
= ±15.2V
= 5V, 0V
= ±15V
= ±10V; R
= 0V
= 0V
= 0V
= 0V
= ±10V; R
= ±10V; R
= 2.5V
= 1.25V
= 2.5V
= 1.25V
= 2.5V
= 1.25V
= 2.5V
= 1.25V
L
L
L
= 10k
= 10k
= 10k
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
–15.2
–15.2
–0.5
0.75
–1.5
0.95
0.85
MIN
–28
–60
–14
0.5
1.0
80
75
75
60
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0.35
0.07
0.25
0.05
TYP
100
180
0.3
0.3
2.5
93
90
70
15
15
25
25
50
50
46
1
LT1991
±0.04
±0.08
±0.06
±0.12
1000
1500
MAX
27.6
2.35
16.8
15.2
1.95
15.2
A
135
160
100
200
150
250
500
750
5.1
7.3
4.2
3.9
1.9
7.5
10
60
50
80
3
1
5
= 25°C.
ppm/°C
nV/√Hz
nV/√Hz
UNITS
μV
μV
μV/°C
μV
μV
1991fg
3
ppm
RMS
RMS
P-P
P-P
dB
dB
dB
dB
μV
μV
μV
μV
μV
μV
μV
μV
nA
nA
pA
pA
pA
pA
%
%
%
%
V
V
V
V
V
V
V
V
V
V
V
V