LTC1661IMS8#PBF

Digital To Analog Converters Overview

The LTC1661IMS8#PBF is a micropower dual 10-bit digital-to-analog converter (DAC) housed in an 8-lead MSOP package. It integrates two serially addressable DACs, each drawing 60µA supply current and capable of sourcing or sinking over 5mA. The device features rail-to-rail voltage outputs that can drive capacitive loads up to 1000pF. A sleep mode reduces total supply current to 1µA. It operates on a single 2.7V to 5.5V supply with a 3-wire serial interface. Key performance metrics include a settling time of 30µs to ±0.5LSB, DNL of ≤±0.75LSB max, and INL of ±2LSB max.

Digital To Analog Converters Feature Summary

• Dual 10-bit DACs in compact 8-lead MSOP package
• Micropower operation: 60µA per DAC; 1µA in sleep mode
• Rail-to-rail buffered outputs drive 1000pF capacitive loads
• Double-buffered input logic for simultaneous updates
• 3-wire serial interface with Schmitt trigger inputs

Digital To Analog Converters Applications

• Mobile communications systems
• Digitally controlled amplifiers and attenuators
• Portable battery-powered instruments
• Automatic calibration for manufacturing
• Remote industrial devices

Digital To Analog Converters Procurement Notes

Verify the #PBF suffix indicates lead-free finish and tube packaging. Confirm the IMS8 designation corresponds to the industrial temperature range (-40°C to +85°C). Ensure the source document matches the official Analog Devices datasheet for accurate electrical specifications.

Digital To Analog Converters Selection Notes

Select this component when board space is limited, as it provides two DACs in half the footprint of an SO-8. Choose the IMS8 variant for industrial temperature requirements. Verify that the required output current exceeds 5mA and capacitive load does not exceed 1000pF without series resistance.

Digital To Analog Converters Part Context

This part belongs to the LTC1661 family of micropower DACs. It serves as a compact alternative to larger packages like SO-8 while offering higher density than single-channel counterparts. It complements octal DACs like the LTC1660 for applications requiring more channels.

Digital To Analog Converters Replacement Considerations

The LTC1661CMS8#PBF is the commercial temperature version (0°C to 70°C) of this part. For higher resolution needs, consider the LTC1446 or LTC1448 dual 12-bit DACs. For single-channel applications, the LTC1659 or LTC1663 may be suitable.