LTC2631CTS8-LM10#TRPBF

Overview

The Analog Devices LTC2631CTS8-LM10#TRPBF is a single-channel, 10-bit voltage-output digital-to-analog converter (DAC) housed in an 8-lead TSOT-23 package. It integrates a precision reference with a temperature coefficient of 10ppm/°C, providing a full-scale output of 2.5V. The device operates on a single supply voltage ranging from 2.7V to 5.5V and features a rail-to-rail buffered output that is guaranteed monotonic over the operating temperature range. Control is managed via a 2-wire I²C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. Upon power-up, the output resets to mid-scale.

Feature Summary

• 10-bit resolution with maximum Integral Nonlinearity (INL) error of ±1 LSB
• Integrated 10ppm/°C reference yielding a 2.5V full-scale output
• Bidirectional REF pin allows for internal reference output or external reference input
• Power-on reset configured to set output to mid-scale

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 confirms the tape and reel packaging format. Confirm the 'C' grade designation matches the required commercial temperature range of 0°C to 70°C for the application environment. Ensure the LM10 suffix correctly specifies the 10-bit resolution and mid-scale power-on reset behavior as defined in the manufacturer's selection guide.

Selection Notes

Select this component when a compact 10-bit DAC with integrated precision reference is required. The LTS2631-L variant supports operation down to 2.7V, suitable for single-supply applications. For designs requiring a higher full-scale voltage of 4.096V, the H-grade variant must be selected instead. Verify that the I²C address pins CA0 and CA1 are configured correctly if multiple devices share the bus.

Part Context

This part belongs to the LTC2631 family of single-channel DACs, which also includes 12-bit and 8-bit variants. The family shares identical pinouts and core architecture but differs in resolution, accuracy grades (A vs standard), and full-scale voltage options determined by the internal reference. The TSOT-23 package provides a small footprint for space-constrained designs.

Replacement Considerations

Direct replacements within the same family include the LTC2631ITS8-LM10#TRMPBF for industrial temperature range (-40°C to 85°C) or the LTC2631HTS8-LM10#TRMPBF for automotive range (-40°C to 125°C). Other resolutions such as the 12-bit LTC2631ITS8-LM12 or 8-bit LTC2631ITS8-LM8 are pin-compatible.