LT1789CS8-10#PBF

Instrumentation, Op Amps, Buffer Amps Overview

The LT1789CS8-10#PBF is a micropower, precision instrumentation amplifier optimized for single-supply operation from 2.2V to 36V. It features a gain range of 10 to 1000 set by a single external resistor. Key electrical parameters include a maximum supply current of 95μA, input offset voltage of 160μV max, and input bias current of 40nA max. The device offers high CMRR (114dB min at G=1000) and PSRR (120dB min at G=1000). It operates within a temperature range of -40°C to +85°C in an 8-lead SOIC package.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Maximizes dynamic output range and input common mode range when amplification of 10 or greater is required.
• Laser trimmed for very low input offset voltage, low drift, high CMRR, and high PSRR.
• Single external resistor sets gain across the specified range.
• Output can handle capacitive loads up to 1000pF in any gain configuration.

Instrumentation, Op Amps, Buffer Amps Applications

• Portable Instrumentation
• Bridge Amplifiers
• Strain Gauge Amplifiers
• Thermocouple Amplifiers
• Differential to Single-Ended Converters

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific suffix #PBF indicates lead-free finish and RoHS compliance as per manufacturer ordering information. Confirm the CS8 designation corresponds to the commercial temperature grade (-40°C to +85°C) and the SOIC-8 package type. Ensure the -10 variant is selected specifically for applications requiring a minimum gain of 10, as it differs functionally from the -1 version regarding gain range and internal architecture.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when high accuracy is needed with minimal power consumption in single-supply systems. The -10 suffix is critical for designs requiring gains of 10 or higher, as it optimizes the output swing and common-mode range compared to the -1 version. Verify that the required gain does not fall below 10, as the -10 variant cannot achieve lower gains. Consider the 8.5mA short-circuit current capability for load driving requirements.

Instrumentation, Op Amps, Buffer Amps Part Context

This part belongs to the LT1789 family of micropower instrumentation amplifiers. It shares core specifications like quiescent current and noise density with the LT1789-1 but differs in gain structure. The family is designed to solve output swing problems found in classical three-op amp topologies by taking gain in the final stage.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

LT1789CS8-1#PBF: Functional substitute if gain range of 1 to 1000 is acceptable; note differences in minimum gain and output swing optimization.

Instrumentation, Op Amps, Buffer Amps FAQ

How is the gain configured for the LT1789-10?

Gain is set by a single external resistor RG connected between pins 1 and 8. The formula is G = 10 * (1 + 200k/RG), allowing a gain range from 10 to 1000.

What is the difference between LT1789-1 and LT1789-10?

The LT1789-1 supports gains from 1 to 1000, while the LT1789-10 supports gains from 10 to 1000. The -10 variant maximizes input common mode range and dynamic output range specifically for gains of 10 or greater.