LT1168CS8#PBF

Instrumentation, Op Amps, Buffer Amps Overview

The LT1168CS8#PBF is a micropower, precision instrumentation amplifier manufactured by Analog Devices Inc. It requires only one external resistor to set gains ranging from 1 to 10,000. The device features a low voltage noise of 10nV/√Hz at 1kHz and operates with a typical supply current of 350µA for ±15V supplies. It supports a wide supply range of ±2.3V to ±18V. Key electrical specifications include a maximum input offset voltage of 40µV, an input bias current of 250pA max, and a gain error of 0.4% max at G=10. The amplifier offers high CMRR (90dB min at G=1) and PSRR (103dB min at G=1). It is available in an 8-lead SOIC package.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Single external resistor configuration allows programmable gain settings from 1 to 10,000.
• Laser trimmed for very low input offset voltage and drift, ensuring high accuracy.
• Superbeta processing achieves extremely low input bias currents.
• Capable of driving capacitive loads up to 1000pF without stability issues.

Instrumentation, Op Amps, Buffer Amps Applications

• Bridge amplifiers
• Strain gauge amplifiers
• Thermocouple amplifiers
• Data acquisition systems

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance when ordering. Confirm the S8 package designation matches the required surface-mount footprint. Ensure the C-grade temperature rating aligns with the operational environment requirements. Cross-reference the manufacturer part number with official distributor catalogs to validate authenticity and availability status before finalizing procurement plans.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component for applications requiring high precision with minimal power consumption. The single-resistor gain setting simplifies circuit design compared to discrete solutions. Consider the input common-mode voltage limitations at higher gains when designing for large output swings. Verify that the source impedance does not exceed the recommended limits to maintain optimal noise performance and accuracy.

Instrumentation, Op Amps, Buffer Amps Part Context

This instrument amplifier belongs to the LT1168 family, designed as a pin-for-pin improved second source for legacy parts like the AD620 and INA118. It provides a cost-effective solution for precision measurement tasks while occupying significantly less PCB area than discrete op-amp resistor networks. The monolithic construction ensures tight matching and tracking of parameters over temperature.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

The datasheet identifies the LT1168 as a pin-for-pin improved second source for the AD620 and INA118. Verify pin compatibility and electrical parameter overlaps before substitution. Review absolute maximum ratings and thermal characteristics to ensure safe operation in existing designs.