LTC2631ACTS8-HM12#TRMPBF

Overview

The LTC2631ACTS8-HM12#TRMPBF is a single-channel, 12-bit voltage-output digital-to-analog converter (DAC) from Analog Devices Inc. It features an integrated precision reference with a full-scale output of 4.096V and operates within a supply voltage range of 4.5V to 5.5V. The device utilizes a 2-wire I²C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. Key electrical specifications include a maximum Integral Nonlinearity (INL) error of ±1 LSB, a typical settling time of 4.6µs at ±1LSB accuracy, and low power consumption of 200µA at 5V. It incorporates a power-on reset circuit configured to initialize the output to mid-scale upon power-up.

Feature Summary

• 12-bit resolution with ±1 LSB maximum INL error
• Integrated 4.096V precision reference with 10ppm/°C temperature coefficient
• I²C interface supporting 400kHz clock rates
• Power-on reset to mid-scale option
• Rail-to-rail buffered output guaranteed monotonic over temperature

Applications

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

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 H-grade designation aligns with the required automotive temperature range of –40°C to 125°C for the target application environment.

Selection Notes

Select this part when a 4.096V internal reference is required with high DC accuracy. Ensure the system supply voltage remains between 4.5V and 5.5V, as lower voltages will prevent proper operation of the H-grade variant. Compare against L-grade parts if a 2.7V–5.5V supply range or 2.5V full-scale output is sufficient for the design.

Part Context

This component belongs to the LTC2631 family of single-channel DACs available in 8-, 10-, and 12-bit resolutions. The 'H' suffix denotes the automotive temperature grade, while 'M' specifies the mid-scale power-on reset behavior. The 'Z' suffix would indicate zero-scale reset and selectable I²C addresses via CA pins, whereas 'M' fixes the address selection logic differently.

Replacement Considerations

Publicly confirmed substitute part numbers are not provided in the source material. Designers should consult the manufacturer's product selection guide for alternative resolutions or package types within the same family.