LTC2051CDD#PBF

Instrumentation, Op Amps, Buffer Amps Overview

The LTC2051CDD#PBF is a dual zero-drift operational amplifier manufactured by Analog Devices Inc. It operates from a single supply voltage ranging from 3V to 5V and supports ±5V applications. The device features a maximum input offset voltage of 3μV and a maximum offset drift of 30nV/°C. It provides a typical power supply rejection ratio (PSRR) and common mode rejection ratio (CMRR) exceeding 130dB, with an open-loop gain of 140dB. The amplifier draws 0.75mA per channel at 3V and includes rail-to-rail output capability.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Zero-drift architecture utilizing autozeroing circuitry to minimize DC offset and drift across temperature variations.
• Rail-to-rail output stage capable of driving loads as low as 2kΩ to both supply rails.
• Extended common-mode input range extending from the negative supply up to typically 1V below the positive supply.

Instrumentation, Op Amps, Buffer Amps Applications

• Thermocouple amplifiers
• Electronic scales
• Medical instrumentation
• Strain gauge amplifiers
• High resolution data acquisition

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance when sourcing. Confirm the C grade designation corresponds to the 0°C to 70°C operating temperature range required for the application. Ensure the DD package footprint matches the PCB layout specifications provided in the datasheet.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component for precision applications requiring ultralow offset voltage and drift without external trimming. Consider the 3MHz gain-bandwidth product and 2V/μs slew rate for signal conditioning needs. Evaluate the 1.5μVP-P noise specification for low-frequency accuracy requirements.

Instrumentation, Op Amps, Buffer Amps Part Context

This part belongs to the LTC2051/LTC2052 family of dual and quad zero-drift operational amplifiers. It is designed for space-limited applications using the 3mm × 3mm × 0.8mm DFN package. The series offers uncompromising DC performance despite its miniature size.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

LTC2051IDD

Instrumentation, Op Amps, Buffer Amps FAQ

How does the internal sampling frequency affect the output?

The internal sampling frequency is typically 7.5kHz. This generates clock feedthrough visible in the output spectrum, which can be reduced by minimizing source resistance or placing a capacitor across the feedback resistor.

What is the impact of ESD on input bias current?

ESD voltages above 700V on the input pins can cause input bias currents to increase significantly, potentially damaging the device and causing currents to exceed specified maximums.