LT1128

PRODUCTION

Ultra Low Noise Precision High Speed Op Amps

Data Sheet Product Selection Table

Part Models: 4
1ku List Price: Starting From $7.01

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Overview

Voltage Noise

1.1nV/√Hz Max. at 1kHz
0.85nV/√Hz Typ. at 1kHz
1.0nV/√Hz Typ. at 10Hz

35nV_P-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.

Applications

Low Noise Frequency Synthesizers
High Quality Audio
Infrared Detectors
Accelerometer and Gyro Amplifiers
350Ω Bridge Signal Conditioning
Magnetic Search Coil Amplifiers
Hydrophone Amplifiers

Part Models: 4
1ku List Price: Starting From $7.01

Documentation

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 Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
LT1128ACN8#PBF	8-Lead PDIP (Narrow 0.3 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1128CN8#PBF	8-Lead PDIP (Narrow 0.3 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1128CS8#PBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1128CS8#TRPBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Oct 8, 2024 - 24_0234 Migrating Bottom Trace Code Marking to Top Side Laser Marking for PDIP Package
		PCN24_0234_Form Material_Report Marking Comparison
LT1128ACN8#PBF	PRODUCTION
LT1128CN8#PBF	PRODUCTION
Oct 11, 2022 - 22_0241 Epoxy Change from Henkel 8290 to 8290A for PDIP Package
		PCN22_0241_Form Material_Report Qualification Results Summary
LT1128ACN8#PBF	PRODUCTION
LT1128CN8#PBF	PRODUCTION
Aug 6, 2022 - 22_0172 Laser Top Mark Conversion for PDIP Packages Assembled in ADPG [PNG]
		PCN22_0172_Form Material_Report Delta Qualification Matrix
LT1128ACN8#PBF	PRODUCTION
LT1128CN8#PBF	PRODUCTION
Dec 14, 2023 - 22_0255 Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 2 of 2)
		PCN22_0255_Form Material_Report Qualification Results Summary Delta Qualification Matrix
LT1128CS8#PBF	PRODUCTION
LT1128CS8#TRPBF	PRODUCTION
Jun 11, 2021 - 21_0060 Laser Top Mark for 8SOICN Assembled in ADPG, UTL and CRM
		PCN21_0060_Form Material_Report Delta Qualification Matrix
LT1128CS8#PBF	PRODUCTION
LT1128CS8#TRPBF	PRODUCTION

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Tools & Simulations

LTspice

Models for the following parts are available in LTspice:

LT1128

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.