LTC2631CTS8-LM10#TRMPBF

Overview

The LTC2631CTS8-LM10#TRMPBF is a single-channel, 10-bit voltage-output digital-to-analog converter (DAC) manufactured by Analog Devices Inc. It integrates a precision reference with a temperature coefficient of 10ppm/°C and operates from a single 2.7V to 5.5V supply. The device features a rail-to-rail output buffer guaranteed monotonic over temperature, with a full-scale output of 2.5V. It utilizes a 2-wire I²C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. Key electrical parameters include a maximum Integral Nonlinearity (INL) of ±1 LSB, a typical settling time of 3.8µs, and a supply current of 180µA at 3V. The component is housed in an 8-lead TSOT-23 package.

Feature Summary

• Integrated 10ppm/°C precision reference providing a 2.5V full-scale output
• I²C serial interface compatible with standard (100kHz) and fast (400kHz) modes
• Rail-to-rail output buffer guaranteed monotonic over the operating temperature range
• Power-on reset circuit configured to initialize the output 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 #TRMPBF indicates a 500-unit tape and reel packaging configuration as defined in the manufacturer's documentation. Confirm that the C-grade designation aligns with the required commercial temperature range of 0°C to 70°C for the intended application environment. Ensure compatibility with the 2.7V to 5.5V supply voltage constraints specified for the LTC2631-L variant.

Selection Notes

Select this part when a 10-bit resolution with ±1 LSB INL accuracy is required in a compact TSOT-23 package. The LM suffix specifies a mid-scale power-on reset state; choose the LZ suffix if zero-scale initialization is necessary. This model supports internal reference operation up to 5.5V; for external reference inputs or higher voltage ranges, consult alternative family members. Verify that the I²C address pins CA0 and CA1 are configured correctly for the system bus topology.

Part Context

This component belongs to the LTC2631 family of single-channel DACs, which also includes 12-bit and 8-bit variants. The family shares common architectural features such as the I²C interface and ThinSOT package but differs in resolution, linearity specifications, and power-on reset behavior. The LTS8 marking on the device corresponds to the 10-bit mid-scale reset configuration within the 2.5V full-scale sub-family.

Replacement Considerations

Direct pin-for-pin replacements within the same package include other LTC2631 variants such as the LTC2631CTS8-LZ10#TRMPBF (zero-scale reset) or LTC2631CTS8-HM10#TRMPBF (4.096V full-scale). Ensure that any substitute matches the required power-on reset state and full-scale voltage output to maintain system compatibility without hardware modification.