LT1028CSW#PBF

Instrumentation, Op Amps, Buffer Amps Overview

The LT1028CSW#PBF is a precision operational amplifier manufactured by Analog Devices Inc., housed in a 16-lead plastic SOIC (Wide) package. It features a gain-bandwidth product of 75 MHz and a slew rate of 15 V/µs. The device exhibits an input voltage noise density of 850 pV/√Hz at 1 kHz and an input bias current of 25 nA. Operating within a supply voltage range of 8 V to 44 V, it delivers a maximum output current of 30 mA per channel with a common-mode rejection ratio of 126 dB.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Achieves ultralow noise performance with voltage noise density lower than that of a 50Ω resistor.
• Combines high-speed specifications with true precision parameters including low offset voltage and drift.
• Maintains low input bias current despite the high collector current required for low voltage noise.

Instrumentation, Op Amps, Buffer Amps Applications

• Low noise frequency synthesizers
• High quality audio circuits
• Infrared detector amplifiers
• Accelerometer and gyro signal conditioning

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance and RoHS status before procurement. Confirm the 16-lead SOIC wide package dimensions match the PCB footprint requirements. Ensure the operating temperature range aligns with the system environment. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit components.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when minimizing total system noise is critical, particularly with low source impedances. Compare against the LT1128 if unity-gain stability is required, as the LT1028 requires a gain of minus one or greater. Evaluate the higher current noise characteristics against source resistance values to ensure optimal noise performance.

Instrumentation, Op Amps, Buffer Amps Part Context

This device belongs to the LT1028/LT1128 series of ultralow noise precision high-speed op amps. It is designed to set new standards in noise performance while maintaining high speed and distortion-free output capabilities. The series is suitable for applications demanding both precision and rapid signal processing.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

LT1128CSW#PBF: Unity-gain stable variant with lower bandwidth and slew rate.

Instrumentation, Op Amps, Buffer Amps FAQ

Is the LT1028CSW#PBF stable at a unity gain?

No, the LT1028 is not stable at a gain of minus one. It requires a closed-loop gain of minus one or greater for stability.

How does the input bias current compare to typical op amps?

The input bias current is only 25 nA, which is low despite the input stage operating at nearly 1 mA of collector current to achieve low voltage noise.