LTC2631HTS8-LM12#TRMPBF

Overview

The LTC2631HTS8-LM12#TRMPBF 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) error of ±1 LSB, a typical settling time of 4.6µs at 5V, and guaranteed monotonicity over the operating temperature range of –40°C to 125°C.

Feature Summary

• 12-bit resolution with ±1 LSB maximum INL error
• Integrated 4.096V reference with 10ppm/°C drift
• I²C interface supporting standard (100kHz) and fast (400kHz) modes
• Power-on reset to mid-scale option
• Guaranteed monotonic operation from –40°C to 125°C

Applications

• Mobile communications
• Process control and industrial automation
• Automatic test equipment
• Portable equipment
• Automotive systems
• Optical networking

Procurement Notes

Verify the H-grade temperature rating (-40°C to 125°C) and LM12 suffix indicating mid-scale reset and 12-bit resolution. Confirm the TRMPBF suffix corresponds to the 500-unit tape and reel packaging format. Ensure the application supply voltage meets the minimum 4.5V requirement for the H-series variant.

Selection Notes

Select this part when a 12-bit DAC with high accuracy (±1 LSB INL) and automotive-grade temperature range is required. Choose the H-series for 4.096V full-scale output if the system supply is stable between 4.5V and 5.5V. Opt for the M-suffix if a known mid-scale state is preferred upon power-up rather than zero-scale.

Part Context

This component belongs to the LTC2631 family of single-channel I²C DACs. The family offers variations in resolution (8, 10, 12 bits), full-scale voltage (2.5V or 4.096V), and temperature grades (C, I, H). The HTS8-LM12 designation specifically identifies the high-temperature grade, thin SOT-23 package, mid-scale reset configuration, and 12-bit resolution within this product line.

Replacement Considerations

Direct substitutes within the same family include LTC2631HTS8-HZ12#TRMPBF (zero-scale reset) or LTC2631ITS8-LM12#TRMPBF (industrial temperature grade). Cross-vendor replacements require verification of pin compatibility, I²C addressability, and reference voltage matching.