LTC2631AHTS8-HM12#TRPBF

Overview

The LTC2631AHTS8-HM12#TRPBF is a single-channel, 12-bit voltage-output digital-to-analog converter (DAC) from Analog Devices Inc. It features an integrated precision reference with a full-scale output of 4.096V and operates within a supply voltage range of 4.5V to 5.5V. The device utilizes a 2-wire I²C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. Key electrical specifications include a maximum integral nonlinearity (INL) error of ±1 LSB, a typical settling time of 4.6µs at 5V, and a power-on reset function that defaults the output to mid-scale. It is housed in an 8-lead TSOT-23 package and supports operation across an extended temperature range of –40°C to 125°C.

Feature Summary

• Integrated 4.096V precision reference with 10ppm/°C drift
• Bidirectional REF pin allows for external reference input or internal reference output
• Power-on reset circuit configurable to zero-scale or mid-scale via hardware pin
• Rail-to-rail buffered output guaranteed monotonic over temperature

Applications

• Mobile communications systems
• Process control and industrial automation
• Automatic test equipment
• Portable battery-powered equipment
• Automotive electronics
• Optical networking devices

Procurement Notes

Verify the specific ordering suffix #TRPBF indicates a tape and reel packaging format. Confirm the H-grade designation matches the required –40°C to 125°C operating temperature range for the application environment. Ensure the 4.5V minimum supply voltage requirement aligns with the system power rails.

Selection Notes

Select this part when a 12-bit resolution with high accuracy (±1LSB INL) is required in a compact 8-lead TSOT-23 package. Choose the HM12 variant specifically for mid-scale power-on reset behavior and a 4.096V full-scale output. Consider the LTC2631Z series if multiple addresses on a single bus are needed, or the LZ variant if zero-scale initialization is preferred.

Part Context

This component belongs to the LTC2631 family of single-channel DACs. The 'A' grade denotes enhanced linearity performance compared to standard grades. The 'H' suffix specifies the automotive-grade temperature range, while 'M' indicates the mid-scale reset configuration. The '12' denotes 12-bit resolution, and 'TS8' identifies the thin plastic TSOT-23 package type.

Replacement Considerations

Direct replacements within the same family include LTC2631AHTS8-LM12#TRPBF for a 2.5V full-scale output or LTC2631AHTS8-HZ12#TRPBF for zero-scale reset. For multi-channel applications, consider the dual-channel LTC2633 series. Verify pin compatibility and software register mapping when substituting between different reset configurations (M vs Z).