LT1101
Precision, Micropower,
Single Supply Instrumentation
Amplifier (Fixed Gain = 10 or 100)
DESCRIPTIO
The LT
廬
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 (75碌A(chǔ) supply current) with a
gain error of 0.008%, gain linearity of 3ppm, gain drift of
1ppm/擄C. The output is guaranteed to drive a 2k load to
鹵10V
with excellent gain accuracy.
Other precision specifications are also outstanding:
50碌V input offset voltage, 130pA input offset current, and
low drift (0.4碌V/擄C and 0.7pA/擄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
鹵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鈥攏o external, power
consuming pull down resistors are needed.
FEATURES
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Gain Error: 0.04% Max
Gain Nonlinearity: 0.0008% (8ppm) Max
Gain Drift: 4ppm/擄C Max
Supply Current: 105碌A(chǔ) Max
Offset Voltage: 160碌V Max
Offset Voltage Drift: 0.4碌V/擄C Typ
Offset Current: 600pA Max
CMRR, G = 100: 100dB Min
0.1Hz to 10Hz Noise: 0.9碌Vp-p Typ
2.3pAp-p Typ
Gain Bandwidth Product: 250kHz Min
Single or Dual Supply Operation
Surface Mount Package Available
APPLICATIO S
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鈻?/div>
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Differential Signal Amplification in Presence of
Common Mode Voltage
Micropower Bridge Transducer Amplifier
鈥?Thermocouples
鈥?Strain Gauges
鈥?Thermistors
Differential Voltage-to-Current Converter
Transformer Coupled Amplifier
4mA to 20mA Bridge Transmitter
, LTC and LT are registered trademarks of Linear Technology Corporation.
TYPICAL APPLICATIO
GROUND 1
(REF)
90R
SHORT TO 1, 2
G = 10
N.C. G = 100
Gain Error Distribution
8
90R
PERCENT OF UNITS
30
OUTPUT
25
9R
R
R
9R
7 SHORT TO 8
G = 10
N.C. G = 100
20
15
10
5
鈥?/div>
A
INVERTING 3
INPUT
4
V
鈥?/div>
B
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
+
+
R
鈮?/div>
9.2k
6 NONINVERTING
INPUT
5
+
V
0
鈥?.04 鈥?.03 鈥?.02 鈥?.01 0 0.01 0.02 0.03 0.04
GAIN ERROR (%)
LT1101 鈥?TA02
LT1101 鈥?TA01
U
鈥?/div>
U
U
G = 100
R
L
= 50k
T
A
= 25擄C
930 UNITS
TESTED
IN ALL PACKAGES
1101fa
1
LT1101ISW 產(chǎn)品屬性
LT1101
47
集成電路 (IC)
Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps
-
儀表
1
-
0.1 V/µs
37kHz
-
6nA
250µV
94µA
-
2.2 V ~ 36 V，±1.1 V ~ 18 V
-40°C ~ 85°C
表面貼裝
16-SOIC（0.295"，7.50mm 寬）
16-SO
管件
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