LT6658AIMSE-1.8#PBF

Overview

The LT6658AIMSE-1.8#PBF is a precision dual output voltage reference from Analog Devices, housed in a 16-lead MSOP package. It provides a fixed 1.8V output with an initial accuracy of ±0.1% and a temperature coefficient of 20ppm/°C. The device operates within a junction temperature range of -40°C to +85°C and supports a maximum input voltage of 36V. Key electrical parameters include a typical supply current of 2.5mA at no load, a maximum shutdown current of 1.3mA, and a noise level of 1.0ppm peak-to-peak in the 0.1Hz to 10Hz bandwidth.

Feature Summary

• Dual independent outputs with identical precision specifications that track each other over temperature and load variations
• Integrated Refulator architecture combining high-performance voltage reference and linear regulator capabilities for heavy loading
• Kelvin sense connections on outputs to achieve ultra-low load regulation by eliminating trace resistance errors
• Separate supply pins (VIN1, VIN2) allow for optimized power consumption and isolation between buffer amplifiers

Applications

• Microcontroller or FPGA systems requiring stable references for integrated ADC/DAC peripherals
• High-resolution data acquisition systems demanding low drift and high accuracy
• Automotive control and monitoring circuits operating in varying thermal environments
• Precision instrumentation and process control equipment

Procurement Notes

Verify the specific suffix #PBF indicates RoHS compliance when sourcing. Confirm the 'I' grade designation matches the required -40°C to +85°C operational range for your application. Ensure the MSOP-16 footprint aligns with your PCB layout constraints before finalizing procurement orders.

Selection Notes

Select this part when dual tracking references are needed without external resistor programming. The 'I' grade offers a balance of cost and performance for industrial applications. Consider the 'H' grade if operation up to 125°C is required, or the 'B' grade if relaxed accuracy specifications suffice.

Part Context

This component belongs to the LT6658 family of precision dual output references. It shares architectural similarities with other variants like the LT6658AIMSE-1.2#PBF but differs in its fixed 1.8V output setting. The family utilizes Analog Devices' proprietary Refulator technology to deliver high current capability alongside low noise performance.

Replacement Considerations

LT6658BIMSE-1.8#PBF serves as a direct substitute with relaxed accuracy and temperature coefficient specifications while maintaining the same package and pinout.