Higher supply 55V, lower Power, better precision, lower voltage noise
Higher supply 60V, better precision, lower voltage noise, shutdown option available
Higher supply 30V
Features and Benefits
- No External Components Required
- Noise Tested and Guaranteed
- Low Aliasing Errors
- Maximum Offset Voltage: 5µV
- Maximum Offset Voltage Drift: 0.5µV/°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
The LTC1050 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 chopper amplifiers. Further, the LTC1050 offers better combined 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 saturation conditions are 1.5ms and 3ms respectively, which represents an improvement of about 100 times over chopper 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.
- Thermocouple Amplifiers
- Electronic Scales
- Medical Instrumentation
- Strain Gauge Amplifiers
- High Resolution Data Acquisition
- DC Accurate R, C Active Filters
Product Lifecycle Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (1)
DC417B: Demo Board
Documentation & Resources
R062 Reliability Data3/23/201839K
AN20 - Application Considerations for an Instrumentation Lowpass Filter9/27/20102M
AN28 - Thermocouple Measurement9/20/2010965K
AN78 - A Collection of Differential to Single-Ended Signal Conditioning Circuits for Use with the LTC2400, a 24-Bit No Latency Delta Sigma ADC in an SO-810/15/2007173K
AN67 - Linear Technology Magazine Circuit Collection, Volume III8/20/20071M
AN48 - Using the LTC Op Amp Macromodels8/20/2007289K
DC417B - Demo Manual2/1/2012137K
DN9 - Chopper Amplifiers Complement a DC Accurate Low-Pass Filter6/28/2016360K
DN42 - Chopper vs Bipolar Op Amps—An Unbiased Comparison7/24/201468K
DN5 - Temperature Measurement Using Data Acquisition Systems7/9/201474K
DN219 - 24-Bit ADC Measures from DC to Daylight6/27/201474K
DN207 - LTC2400 High Accuracy Differential to Single-Ended Converter for ±5V Supplies6/27/201474K
Design Solutions 6 - LTC2400 Differential to Single-Ended Converter for Single 5V Supply This Converter Has High Accuracy, Very Low Offset and Offset Drift, Rail-to-Rail Input Common Mode Range and is Live at Zero4/8/201060K
Design Solutions 4 - High Accuracy, Differential to Single-Ended Conversion for Wide Range Bipolar Input Signals Bipolar Differential to Single-Ended Converter Drives the LTC2400's Input Rail-to-Rail8/21/200736K
Design Solutions 1 - LTC2400 High Accuracy Differential to Single-Ended Differential to Single-Ended Converter Has Very High Uncalibrated Accuracy and Low Offset and Drift8/21/200737K
Design Note 36: Ultra Low Noise Op Amp Combines Chopper and Bipolar Op Amps1/1/1990
LTC2050, Zero-Drift Operational Amplifier in SOT-23 Package Minimizes Board Area without Compromising Specs2/1/2000 LT Journal
LTC2400 Differential Bridge Digitizers6/1/1999 LT Journal
Tools & Simulations
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Models for the following parts are available in LTspice:
LTC1050 Companion Parts
Recommended Related Parts
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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.