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LT1101IN8 数据手册 - ADI（亚德诺）
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LT1101IN8数据手册
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1
LT1101
1101fa
■
Gain Error: 0.04% Max
■
Gain Nonlinearity: 0.0008% (8ppm) Max
■
Gain Drift: 4ppm/°C Max
■
Supply Current: 105µA Max
■
Offset Voltage: 160µV Max
■
Offset Voltage Drift: 0.4µV/°C Typ
■
Offset Current: 600pA Max
■
CMRR, G = 100: 100dB Min
■
0.1Hz to 10Hz Noise: 0.9µVp-p Typ
2.3pAp-p Typ
■
Gain Bandwidth Product: 250kHz Min
■
Single or Dual Supply Operation
■
Surface Mount Package Available
The LT
®
1101 establishes the following milestones:
(1) It is the first micropower instrumentation amplifier,
(2) It is the first single supply instrumentation amplifier,
(3) It is the first instrumentation amplifier to feature fixed
gains of 10 and/or 100 in low cost, space-saving 8-lead
packages.
The LT1101 is completely self-contained: no external gain
setting resistor is required. The LT1101 combines its
micropower operation (75µA supply current) with a
gain error of 0.008%, gain linearity of 3ppm, gain drift of
1ppm/°C. The output is guaranteed to drive a 2k load to
±10V with excellent gain accuracy.
Other precision specifications are also outstanding:
50µV input offset voltage, 130pA input offset current, and
low drift (0.4µV/°C and 0.7pA/°C).
In addition, unlike other
instrumentation amplifiers, there is no output offset
voltage contribution to total error.
A full set of specifications are provided with ±15V dual
supplies and for single 5V supply operation. The LT1101
can be operated from a single lithium cell or two Ni-Cad
batteries. Battery voltage can drop as low as 1.8V, yet the
LT1101 still maintains its gain accuracy. In single supply
applications, both input and output voltages swing
to within a few millivolts of ground. The output sinks
current while swinging to ground—no external, power
consuming pull down resistors are needed.
Precision, Micropower,
Single Supply Instrumentation
Amplifier (Fixed Gain = 10 or 100)
FEATURES
APPLICATIO S
U
DESCRIPTIO
U
■
Differential Signal Amplification in Presence of
Common Mode Voltage
■
Micropower Bridge Transducer Amplifier
– Thermocouples
– Strain Gauges
– Thermistors
■
Differential Voltage-to-Current Converter
■
Transformer Coupled Amplifier
■
4mA to 20mA Bridge Transmitter
, LTC and LT are registered trademarks of Linear Technology Corporation.
Gain Error Distribution
GAIN ERROR (%)
–0.04
0
PERCENT OF UNITS
5
10
15
20
–0.02 0
0.02
0.04
25
30
–0.03 –0.01
0.01
0.03
LT1101 • TA02
930 UNITS
TESTED
IN ALL PACKAGES
G = 100
R
L
= 50k
T
A
= 25°C
TYPICAL APPLICATIO
U
–
+
–
+
LT1101 • TA01
OUTPUT
90R
9R
90R
9R
R
AB
R ≈ 9.2k
R
V
+
V
–
INVERTING
INPUT
GROUND PIN 1, OUTPUT AT PIN 8
G = 100: NO ADDITIONAL CONNECTIONS
G = 10: SHORT PIN 2 TO PIN 1, SHORT PIN 7 TO PIN 8
SHORT TO 1,
G = 10
N.C. G = 100
GROUND
(REF)
8
7
6
54
3
2
1
SHORT TO 8
G = 10
N.C. G = 100
NONINVERTING
INPUT
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