LTC2631HTS8-LM12#TRPBF

Overview

The LTC2631HTS8-LM12#TRPBF is a single 12-bit voltage-output digital-to-analog converter (DAC) from Analog Devices Inc., housed in an 8-lead TSOT-23 package. It features an integrated precision reference yielding a full-scale output of 4.096V, requiring a supply voltage between 4.5V and 5.5V. The device supports a 2-wire I²C interface with clock rates up to 400kHz and includes a power-on reset circuit configured to initialize the output to mid-scale. Key electrical specifications include a maximum integral nonlinearity (INL) of ±1 LSB, a typical settling time of 4.6µs at ±1 LSB for 12-bit resolution, and low power consumption of 200µA at 5V.

Feature Summary

• Integrated 10ppm/°C precision reference providing 4.096V full-scale output
• 12-bit resolution with guaranteed monotonicity and ±1 LSB maximum INL
• I²C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes
• Power-on reset function defaults 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 that the H-grade temperature rating (-40°C to 125°C) matches the operational environment requirements. Confirm the 4.5V minimum supply voltage constraint aligns with the system power rails. Ensure the I²C address configuration via CA0 and CA1 pins does not conflict with other devices on the bus. Check that the TRPBF suffix indicates the standard 2,500-piece tape and reel packaging format.

Selection Notes

Select this part when a 12-bit accuracy with ±1 LSB INL is required in a compact TSOT-23 footprint. The H-grade variant is necessary for automotive or high-temperature industrial environments exceeding 85°C. Choose this model over the L-grade if the application requires a 4.096V output range rather than 2.5V. Verify that the system can support the 4.5V to 5.5V supply range mandated by the internal reference architecture.

Part Context

This component belongs to the LTC2631 family of single-channel DACs, which also includes 10-bit and 8-bit variants. The 'H' designation specifies the automotive temperature grade (-40°C to 125°C), while 'LM12' indicates the mid-scale power-on reset and 12-bit resolution. The '#TRPBF' suffix denotes lead-free construction in a standard tape and reel format.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult Analog Devices marketing for information on non-standard lead-based finish parts or alternative packages.