LTC1053_15 Datasheet, PDF (1/16 Pages) Linear Technology – Dual/Quad Precision Zero-Drift Operational Amplifiers With Internal Capacitors

LTC1051/LTC1053
Dual/Quad Precision
Zero-Drift Operational Amplifiers
With Internal Capacitors
FEATURES
DESCRIPTIO
■ _{Dual/Quad Low Cost Precision Op Amp}
■ _{No External Components Required}
■ _{Maximum Offset Voltage: 5µV}
■ _{Maximum Offset Voltage Drift: 0.05µV/°C}
■ _{Low Noise 1.5µVP-P (0.1Hz to 10Hz)}
■ _{Minimum Voltage Gain: 120dB}
■ _{Minimum PSRR: 120dB}
■ _{Minimum CMRR: 114dB}
■ _{Low Supply Current: 1mA/Op Amp}
■ _{Single Supply Operation: 4.75V to 16V}
■ _{Input Common Mode Range Includes Ground}
■ _{Output Swings to Ground}
■ _{Typical Overload Recovery Time: 3ms}
■ _{Pin Compatible with Industry Standard Dual and}
Quad Op Amps _U
APPLICATIO S
■ _{Thermocouple Amplifiers}
■ _{Electronic Scales}
■ _{Medical Instrumentation}
■ _{Strain Gauge Amplifiers}
■ _{High Resolution Data Acquisition}
■ _{DC Accurate R C Active Filters}
, LTC and LT are registered trademarks of Linear Technology Corporation.
The LTC^®1051/LTC1053 are high performance, low cost
dual/quad zero-drift operational amplifiers. The unique
achievement of the LTC1051/LTC1053 is that they integrate
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.
The LTC1051/LTC1053 have an offset voltage of 0.5µV,
drift of 0.01µV/°C, DC to 10Hz, input noise voltage typically
1.5µV_P-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.
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.
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.
TYPICAL APPLICATIO
High Performance Low Cost Instrumentation Amplifier
R1
R2
5V
R2
2_–
8
1/2
LTC1051
1
R1
6
–
V_IN ³ +
R1 = 499Ω, 0.1%
1/2
V_IN
5
LTC1051
+₄
R2 = 100k, 0.1%
GAIN = 201
– 5V
MEASURED CMRR ~ 120dB AT DC
MEASURED INPUT V_OS 3µV
MEASURED INPUT NOISE 2µV_P-P (DC – 10Hz)
7
1051/53 TA01a
LTC1051 Noise Spectrum
120
100
80
60
40
20
10
100
1k
FREQUENCY (Hz)
10k
1051/53 TA01b
10513fa
1