LT1997-1

RECOMMENDED FOR NEW DESIGNS

Precision, High Voltage, Gain Selectable Difference/Current Sense Amplifier

Data Sheet (Rev. 0) Product Selection Table

Part Models: 8
1ku List Price: Starting From $3.77

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Part Details

Precision Gain: Up to 80V/V
Input Common Mode Voltage Range: V^– to V^– + 76V
109dB Minimum CMRR (Gain = 10)
0.012% (120ppm) Maximum Gain Error (Gain = 10)
1ppm/°C Maximum Gain Error Drift
2ppm Maximum Gain Nonlinearity

Wide Supply Voltage Range: 3.3V to 50V
Rail-to-Rail Output
350µA Supply Current
65µV Maximum Op Amp Offset Voltage
650kHz –3dB Bandwidth (Gain = 10)
Low Power Shutdown: 20µA
Space-Saving MSOP and DFN Packages

Part Models: 8
1ku List Price: Starting From $3.77

Documentation

Data Sheet 1

LT1997-1: Precision, High Voltage, Gain Selectable Difference/Current Sense Amplifier Data Sheet (Rev.0) 10/30/2018

Technical Articles 1

Choosing a Precision Amplifier Topology 12/16/2024

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
LT1997HDF-1#PBF	14(12)-Lead DFN (4mm x 4mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1997HDF-1#TRPBF	14(12)-Lead DFN (4mm x 4mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1997HMS-1#PBF	16(12)-Lead MSOP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1997HMS-1#TRPBF	16(12)-Lead MSOP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1997IDF-1#PBF	14(12)-Lead DFN (4mm x 4mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1997IDF-1#TRPBF	14(12)-Lead DFN (4mm x 4mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1997IMS-1#PBF	16(12)-Lead MSOP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LT1997IMS-1#TRPBF	16(12)-Lead MSOP	Material Declaration Reliablity Data	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Feb 14, 2025 - 25_0016 Bond Wire Change from Gold to Copper Wire (Notification Only)
		PCN25_0016_Form Material_Report Qualification Results Summary
LT1997HDF-1#PBF	PRODUCTION
LT1997HDF-1#TRPBF	PRODUCTION
LT1997HMS-1#PBF	PRODUCTION
LT1997HMS-1#TRPBF	PRODUCTION
LT1997IDF-1#PBF	PRODUCTION
LT1997IDF-1#TRPBF	PRODUCTION
LT1997IMS-1#PBF	PRODUCTION
LT1997IMS-1#TRPBF	PRODUCTION
Feb 4, 2020 - 20_0129 Laser Mark Conversion for 12-Lead MSOP Packages Assembled in ADPG and UTAC
		PCN20_0129_Form Material_Report
LT1997HMS-1#PBF	PRODUCTION
LT1997HMS-1#TRPBF	PRODUCTION
LT1997IMS-1#PBF	PRODUCTION
LT1997IMS-1#TRPBF	PRODUCTION
Feb 4, 2020 - 20_0132 Laser Top Mark for 16-Lead MSOP Packages Assembled in ADPG and UTAC
		PCN20_0132_Form Material_Report
LT1997HMS-1#PBF	PRODUCTION
LT1997HMS-1#TRPBF	PRODUCTION
LT1997IMS-1#PBF	PRODUCTION
LT1997IMS-1#TRPBF	PRODUCTION

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

Tools & Simulations

LTspice 1

LT1997-1 - Specialty Amplifiers

Models for the following parts are available in LTspice:

LT1997-1
LT1997-2
LT1997-3

LT1997-1 Online Design Tool - BETA

Online Design Tool – BETA helps configure difference amplifier gain and topology with consideration for supply and output common mode limitations, analyzes noise and input impedance, and generates a downloadable LTSpice file for further simulation.

Open Tool

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.

Evaluation Kits

LT1997 – Configurable Precision Amplifier

Buy Now View Details

Product Details

Demonstration Circuit 2551A is a Configurable Precision Amplifier featuring the LT1997.

The DC2551A-C supports the LT1997-1 version.

This demo board provides a rapid evaluation tool with jumpers providing the typical interconnection options that facilitate setting the pin-strapped internal gain configuration. The LT1997 is unusual in that it may be powered from a low voltage (down to 3.3V) while it accepts sign particularly high supply voltages, up to 50V. Connection points are provided to wire the amplifier in other configurations besides those possible with the jumpers alone.

Resources

DC2551A - Demo Manual (Rev.A)
495.15 K

DC2551A - Schematic
41.00K

DC2551A - Design Files
1.00M

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