LTC2631CTS8-HM12#TRPBF

Overview

The LTC2631CTS8-HM12#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 400kHz I2C interface 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 ±2.5 LSB, a typical settling time of 4.6µs at 5V, and a supply current of 200µA at 5V with the internal reference active.

Feature Summary

• 12-Bit Resolution with Integrated 4.096V Reference
• I2C Interface Supporting 400kHz Fast Mode
• Power-On Reset to Mid-Scale (Suffix M)
• Automotive Temperature Grade (-40°C to 125°C)

Applications

• Process Control and Industrial Automation
• Automatic Test Equipment
• Portable Equipment

Procurement Notes

Verify the suffix #TRPBF indicates a standard tape and reel packaging configuration. Confirm the H-grade designation matches the required -40°C to 125°C operating temperature range for the specific application environment. Ensure the 4.5V minimum supply voltage requirement aligns with the system power rails.

Selection Notes

Select this part when a 12-bit resolution and 4.096V full-scale output are required within a compact TSOT-23 footprint. The 'H' grade is necessary for automotive or high-temperature industrial applications exceeding 85°C. The 'M' suffix ensures the DAC initializes to mid-scale upon power-up, which may be preferred over zero-scale for specific biasing requirements.

Part Context

This component belongs to the LTC2631 family of single-channel I2C DACs. Variants differ by resolution (8/10/12-bit), full-scale voltage (2.5V or 4.096V), temperature grade (C/I/H), and power-on reset behavior (Z/M). The CTS8-HM12 specifically denotes the Commercial temperature range variant? No, H denotes Automotive grade. The 'C' in CTS8 refers to the package type code used by the manufacturer, while 'H' defines the temperature grade.

Replacement Considerations

Direct pin-compatible replacements within the same family include LTC2631ITS8-HM12#TRPBF (Industrial grade, -40°C to 85°C) if the higher temperature rating is not required. For lower resolution needs, LTC2631ITS8-HM10#TRPBF (10-bit) or LTC2631ITS8-HM8#TRPBF (8-bit) are compatible options.