LTC1051/LTC1053
Dual/Quad Precision
Zero-Drift Operational Amplifiers
With Internal Capacitors
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FEATURES
DESCRIPTIO
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Dual/Quad Low Cost Precision Op Amp
The LTC®1051/LTC1053 are high performance, low cost
dual/quad zero-drift operational amplifiers. The unique
achievementoftheLTC1051/LTC1053isthattheyintegrate
on chip the sample-and-hold capacitors usually required
externally by other chopper amplifiers. Further, the
LTC1051/LTC1053 offer better combined overall DC and
AC performance than is available from other chopper
stabilized amplifiers with or without internal sample/hold
capacitors.
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No External Components Required
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Maximum Offset Voltage: 5µV
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Maximum Offset Voltage Drift: 0.05µV/°C
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Low Noise 1.5µVP-P (0.1Hz to 10Hz)
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Minimum Voltage Gain: 120dB
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Minimum PSRR: 120dB
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Minimum CMRR: 114dB
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Low Supply Current: 1mA/Op Amp
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Single Supply Operation: 4.75V to 16V
The LTC1051/LTC1053 have an offset voltage of 0.5µV,
driftof0.01µV/°C,DCto10Hz,inputnoisevoltagetypically
1.5µVP-P and typical voltage gain of 140dB. The slew rate
of 4V/µs and gain bandwidth product of 2.5MHz are
achieved with only 1mA of supply current per op amp.
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Input Common Mode Range Includes Ground
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Output Swings to Ground
Typical Overload Recovery Time: 3ms
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Pin Compatible with Industry Standard Dual and
Quad Op Amps
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Overload recover times from positive and negative
saturation conditions are 1.5ms and 3ms respectively,
about a 100 or more times improvement over chopper
amplifiers using external capacitors.
APPLICATIO S
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Thermocouple Amplifiers
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Electronic Scales
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The LTC1051 is available in an 8-lead standard plastic
dual-in-line package as well as a 16-pin SW package. The
LTC1053 is available in a standard 14-pin plastic package
and an 18-pin SO. The LTC1051/LTC1053 are plug in
replacements for most standard dual/quad op amps with
improved performance.
Medical Instrumentation
Strain Gauge Amplifiers
High Resolution Data Acquisition
DC Accurate R C Active Filters
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, LTC and LT are registered trademarks of Linear Technology Corporation.
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TYPICAL APPLICATIO
High Performance Low Cost Instrumentation Amplifier
LTC1051 Noise Spectrum
120
R2
R1
5V
100
80
60
40
20
R2
2
3
8
–
R1
6
5
1/2
LTC1051
1
–
1/2
LTC1051
7
V
+
IN
V
+
IN
4
R1 = 499Ω, 0.1%
R2 = 100k, 0.1%
GAIN = 201
–5V
MEASURED CMRR ~ 120dB AT DC
MEASURED INPUT V 3µV
OS
1051/53 TA01a
MEASURED INPUT NOISE 2µV (DC – 10Hz)
10
100
1k
10k
P-P
FREQUENCY (Hz)
1051/53 TA01b
10513fa
1