LTC1047C 데이터 시트보기 (PDF) - Linear Technology
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LTC1047C Datasheet PDF : 12 Pages
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FEATURES
■ No External Components Required
■ Maximum Offset Voltage: 10µV
■ Maximum Offset Voltage Drift: 50nV/°C
■ Supply Current: 80µA
■ Minimum CMRR: 110dB
■ Minimum PSRR: 105dB
■ Single Supply Operation: 4.75V to 16V
■ Common Mode Range Includes GND
■ Output Swings to GND
■ Typical Overload Recovery Time: 70ms
■ Pin Compatible with Industry Standard Dual
Op Amps
U
APPLICATIO S
■ Thermocouple Amplifiers
■ Electronic Scales
■ Battery Powered Instrumentation
■ Strain Gauge Amplifiers
■ Remote Located Sensors
LTC1047
Dual Micropower
Zero-Drift Operational Amplifier
with Internal Capacitors
DESCRIPTIO
The LTC®1047 is a micropower, high performance
dual zero-drift operational amplifier. The sample-and-hold
capacitors usually required by other chopper amplifiers
are integrated on-chip, minimizing the need for external
components.
The LTC1047 has a typical offset voltage of 3µV, drift
of 10nV/°C, input noise voltage typically 3.5µVP-P,
and typical voltage gain of 150dB. The common mode
rejection is 110dB minimum, with minimum power supply
rejection of 105dB. The LTC1047 also offers a 0.2V/µs
slew rate and a gain bandwidth product of 200kHz. Over-
load recovery time from saturation is 70ms, four times
faster than chopper amplifiers with external capacitors.
The LTC1047 is available in a standard plastic 8-pin PDIP
as well as a 16-pin SW package. The LTC1047 is a plug-in
replacement for most dual op amps with improved DC
performance and substantial power savings.
, LTC and LT are registered trademarks of Linear Technology Corporation.
TYPICAL APPLICATIO
Micropower Single Supply Instrumentation Amplifier
5V
4
1/2 LTC1043
100Ω
100k
–IN 18
15
+IN 6
3
CS
1µF
2
5
5V
CH
1µF
6–
1/2
5
LTC1047
+4
16
17
0.1µF
GAIN = 1000
CMRR > = 120dB AT 60Hz
VOS = < 10µV
IS = 62µA (INCLUDING THE LTC1043)
7
VOUT
LTC1047 • TA01
CMRR vs Frequency
140
CS = CH = 1µF
120
100
80
60
40
20
100
1k
10k
100k
FREQUENCY OF COMMON MODE SIGNAL
LT1047 • TA02
1047fa
1
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