LTC2631ITS8-LM10#TRPBF

Overview

The LTC2631ITS8-LM10#TRPBF is a single-channel, 10-bit voltage-output digital-to-analog converter (DAC) from Analog Devices Inc. It integrates a precision reference with a temperature coefficient of 10ppm/°C and operates on a single supply ranging from 2.7V to 5.5V. The device features a rail-to-rail output buffer that is guaranteed monotonic over the operating temperature range. It utilizes a 2-wire I²C-compatible serial interface supporting standard mode (100kHz) and fast mode (400kHz). The part includes a power-on reset circuit configured to set the output to mid-scale upon initialization. It is housed in an 8-lead TSOT-23 package.

Feature Summary

• 10-bit resolution with maximum Integral Nonlinearity (INL) error of ±1 LSB
• Integrated 10ppm/°C reference providing a 2.5V full-scale output
• Rail-to-rail buffered output guaranteed monotonic from -40°C to 85°C
• I²C interface with selectable addresses via CA0 pin and power-on reset to mid-scale

Applications

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

Procurement Notes

Verify the specific ordering suffix #TRPBF indicates a 2,500-piece tape and reel packaging format. Confirm the 'I' grade designation matches the required industrial temperature range of –40°C to 85°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 systems. The 'M' suffix ensures the output initializes to mid-scale rather than zero-scale, which may be necessary for specific biasing requirements. Verify that the I²C bus speed requirements do not exceed 400kHz and that the address configuration via the CA0 pin fits the system topology.

Part Context

This part belongs to the LTC2631 family of single-channel voltage-output DACs available in 8-, 10-, and 12-bit resolutions. The family shares a common 8-lead TSOT-23 package and I²C interface architecture. Variations within the family differ by resolution, internal reference full-scale voltage (2.5V or 4.096V), power-on reset state, and temperature grade. The LTC2631-LM10 specifically denotes the 10-bit version with 2.5V reference and mid-scale reset.

Replacement Considerations

Direct replacements within the same family include LTC2631ITS8-LZ10#TRPBF for zero-scale reset or LTC2631ITS8-HM10#TRPBF for higher voltage headroom. Cross-family alternatives require verification of pin compatibility and software register mapping.