LT1028/LT1128: Ultralow Noise Precision High Speed Op Amps Data Sheet10/2/2017712K
Features and Benefits
- Voltage Noise
- 1.1nV/√Hz Max. at 1kHz
- 0.85nV/√Hz Typ. at 1kHz
- 1.0nV/√Hz Typ. at 10Hz
- 35nVP-P Typ., 0.1Hz to 10Hz
- Gain-Bandwidth Product
- LT1028: 50MHz Min.
- LT1128: 13MHz Min.
- Slew Rate
- LT1028: 11V/µs Min.
- LT1128: 5V/µs Min.
- Offset Voltage: 40µV Max.
- Drift with Temperature: 0.8µV/°C Max.
- Voltage Gain: 7 Million Min.
- Voltage and Current Noise 100% Tested
- Available in 8-Pin SO Package
The LT1028 (gain of –1 stable)/LT1128(gain of +1 stable) achieve a new standard of excellence in noise performance with 0.85nV/√Hz 1kHz noise, 1.0nV/√Hz 10Hz noise. This ultralow noise is combined with excellent high speed specifications (gain-bandwidth product is 75MHz for LT1028, 20MHz for LT1128), distortion-free output, and true precision parameters (0.1µV/°C drift, 10µV offset voltage, 30 million voltage gain). Although the LT1028/LT1128 input stage operates at nearly 1mA of collector current to achieve low voltage noise, input bias current is only 25nA.
The LT1028/LT1128’s voltage noise is less than the noise of a 50Ω resistor. Therefore, even in very low source impedance transducer or audio amplifier applications, the LT1028/LT1128’s contribution to total system noise will be negligible.
- Low Noise Frequency Synthesizers
- High Quality Audio
- Infrared Detectors
- Accelerometer and Gyro Amplifiers
- 350 ohms Bridge Signal Conditioning
- Magnetic Search Coil Amplifiers
- Hydrophone Amplifiers
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
R041 Reliability Data3/26/201820 K
AN141 - Risk Assessment Advice for High Reliability Amplifiers10/7/2013292K
AN45 - Measurement and Control Circuit Collection11/29/20121M
AN43 - Bridge Circuits7/10/20123M
AN21 - Composite Amplifiers5/4/2010322K
AN57 - Video Circuit Collection9/4/2008545K
AN48 - Using the LTC Op Amp Macromodels8/20/2007289K
DC417B - Demo Manual2/1/2012137K
DN15 - Noise Calculations in Op Amp Circuits6/28/2016219K
DN3 - Operational Amplifier Selection Guide for Optimum Noise Performance6/28/2016218K
DN140 - Updated Operational Amplifier Selection Guide for Optimum Noise Performance7/28/201472K
DN42 - Chopper vs Bipolar Op Amps—An Unbiased Comparison7/24/201468K
DN6 - Operational Amplifier Selection Guide for Optimum Noise Performance8/20/2007133K
SAR ADC Drivers8/29/2016276K
High Voltage Amplifiers9/10/2013368K
Paralleling Amplifiers Improves Signal-to-Noise Performance7/9/2015
Locating Shorts on Power Planes of Multi-Layer PCBs8/7/2014
Consider New Precision Amplifiers for Updated Industrial Equipment Designs9/1/2009 LT Journal
SOT-23 10MHz Rail-to-Rail Op Amp Saves Board Space and Power11/1/2000 LT Journal
JFET Op Amps Equal Low Noise Bipolars and Have Picoamp Current Noise9/1/1999 LT Journal
Tools & Simulations
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ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.
|Part Number||Material Declaration||Reliability Data||Pin/Package Drawing||CAD Symbols, Footprints & 3D Models|
|LT1028ACN8#PBF||Material Declaration||Reliability Data||8-Lead PDIP (Narrow 0.3 Inch)|
|LT1028CDICE||Material Declaration||Reliability Data||CHIPS OR DIE|
|LT1028CN8#PBF||Material Declaration||Reliability Data||8-Lead PDIP (Narrow 0.3 Inch)|
|LT1028CS8#PBF||Material Declaration||Reliability Data||8-Lead SOIC (Narrow 0.15 Inch)|
|LT1028CS8#TRPBF||Material Declaration||Reliability Data||8-Lead SOIC (Narrow 0.15 Inch)|
|LT1028CSW#PBF||Material Declaration||Reliability Data||16-Lead SOIC (Wide 0.3 Inch)|
|LT1028CSW#TRPBF||Material Declaration||Reliability Data||16-Lead SOIC (Wide 0.3 Inch)|
|Wafer Fabrication Data||R041 Reliability Data|
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