LTC1050 View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'LTC1050' PDF : 16 Pages View PDF
FEATURES
■ No External Components Required
■ Noise Tested and Guaranteed
■ Low Aliasing Errors
■ Maximum Offset Voltage: 5µV
■ Maximum Offset Voltage Drift: 0.05µV/°C
■ Low Noise: 1.6µVP-P (0.1Hz to 10Hz)
■ Minimum Voltage Gain: 130dB
■ Minimum PSRR: 125dB
■ Minimum CMRR: 120dB
■ Low Supply Current: 1mA
■ Single Supply Operation: 4.75V to 16V
■ Input Common Mode Range Includes Ground
■ Output Swings to Ground
■ Typical Overload Recovery Time: 3ms
U
APPLICATIO S
■ Thermocouple Amplifiers
■ Electronic Scales
■ Medical Instrumentation
■ Strain Gauge Amplifiers
■ High Resolution Data Acquisition
■ DC Accurate RC Active Filters
, LTC and LT are registered trademarks of Linear Technology Corporation.
LTC1050
Precision Zero-Drift
Operational Amplifier
with Internal Capacitors
DESCRIPTIO
The LTC®1050 is a high performance, low cost zero-drift
operational amplifier. The unique achievement of the
LTC1050 is that it integrates on-chip the two sample-and-
hold capacitors usually required externally by other chop-
per amplifiers. Further, the LTC1050 offers better com-
bined overall DC and AC performance than is available
from other chopper stabilized amplifiers with or without
internal sample-and-hold capacitors.
The LTC1050 has an offset voltage of 0.5µV, drift of
0.01µV/°C, DC to 10Hz, input noise voltage of 1.6µVP-P
and a typical voltage gain of 160dB. The slew rate of 4V/µs
and a gain bandwidth product of 2.5MHz are achieved with
only 1mA of supply current.
Overload recovery times from positive and negative satu-
ration conditions are 1.5ms and 3ms respectively, which
represents an improvement of about 100 times over chop-
per amplifiers using external capacitors. Pin 5 is an optional
external clock input, useful for synchronization purposes.
The LTC1050 is available in standard 8-pin metal can,
plastic and ceramic dual-in-line packages as well as an
SO-8 package. The LTC1050 can be an improved plug-in
replacement for most standard op amps.
TYPICAL APPLICATIO
High Performance, Low Cost Instrumentation Amplifier
5V
4
1/2 LTC1043
7
8
DIFFERENTIAL
INPUT
11
CS
1µF
12
5V
3+
7
LTC1050
6
2–
4
CH
1µF
– 5V
1µF
VOUT
13
14
16
17
0.01µF
– 5V
R1
R2
1050 TA01
CMRR > 120dB AT DC
CMRR > 120dB AT 60Hz
DUAL SUPPLY OR SINGLE 5V
GAIN = 1 + R2/R1
VOS = 5µV
COMMON MODE INPUT VOLTAGE EQUALS THE SUPPLIES
160
140
120
100
80
60
40
20
0
10
Noise Spectrum
100
1k
10k
FREQUENCY (Hz)
100k
1050 TA02
1050fb
1
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