LT1997IDF-1#TRPBF

Instrumentation, Op Amps, Buffer Amps Overview

The LT1997IDF-1#TRPBF is a precision, high-voltage difference amplifier in a 14-lead DFN package. It integrates a matched resistor network with an operational amplifier to amplify small differential signals while rejecting large common-mode voltages. The device offers pin-selectable gains of 10, 20, and 50, supporting combined gains up to 80 V/V. It operates with input common-mode voltages from V– to V– + 76V independent of the positive supply. Key electrical parameters include a minimum CMRR of 109 dB at Gain = 10, a maximum gain error of 0.012%, and a bandwidth of 650 kHz at Gain = 10. Supply voltage ranges from 3.3V to 50V, with a quiescent current of 350µA.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Integrates precision operational amplifier with highly-matched internal resistors for accurate signal amplification without external components.
• Supports wide input common-mode voltage range extending up to 76V above the negative supply rail.
• Provides multiple pin-selectable gain options (10, 20, 50) that can be combined for higher accuracy applications.
• Features low power shutdown capability reducing supply current significantly when deactivated.

Instrumentation, Op Amps, Buffer Amps Applications

• High side or low side current sensing
• Bidirectional wide common mode range current sensing
• High voltage to low voltage level translation
• Industrial data-acquisition front-ends

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging configuration. Confirm the 'I' grade designation corresponds to the –40°C to 85°C operating temperature range required for your application environment. Ensure the 14-lead DFN footprint matches your PCB layout constraints before finalizing procurement orders.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when high common-mode rejection is critical in industrial environments. The DF package is suitable for space-constrained designs requiring robust performance over a standard industrial temperature range. Consider the H-grade variant if operation up to 125°C is necessary. Verify that the available gain steps meet the system's resolution requirements.

Instrumentation, Op Amps, Buffer Amps Part Context

This part belongs to the LT1997 family of gain-selectable difference amplifiers manufactured by Analog Devices Inc. It shares functional similarities with other variants like the LT1997-3 but differs in pinout and specific gain configurations. The IDF suffix specifically denotes the 14-lead plastic DFN package type used for compact surface-mount implementations.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

LT1997IDF-1#PBF is the lead-free tray equivalent of this tape-and-reel part number.