LTC2631HTS8-LM8#TRPBF

Overview

The LTC2631HTS8-LM8#TRPBF is an 8-bit voltage-output digital-to-analog converter (DAC) from Analog Devices Inc., housed in an 8-lead TSOT-23 package. It features a high-accuracy internal reference with 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 operating at standard (100kHz) and fast (400kHz) modes. Key electrical parameters include a maximum Integral Nonlinearity (INL) of ±0.5 LSB, a typical settling time of 4.6µs to ±1/2 LSB, and a power-down current of 4µA maximum for the H-grade. It includes a power-on reset circuit configured to reset to mid-scale.

Feature Summary

• Integrated 4.096V precision reference with ±10ppm/°C temperature coefficient
• I²C-compatible serial interface supporting 400kHz clock rates
• Power-on reset to mid-scale option (suffix M)
• Automotive temperature grade (-40°C to 125°C)

Applications

• Process control and industrial automation
• Portable battery-powered equipment
• Automotive systems
• Automatic test equipment

Procurement Notes

Verify the suffix #TRPBF indicates a 2,500-piece tape and reel packaging format. Confirm the H-grade designation ensures operation within the -40°C to 125°C automotive temperature range. Ensure the LM8 suffix correctly specifies the mid-scale reset and 8-bit resolution configuration for the specific application requirements.

Selection Notes

Select this part when a 4.096V full-scale output is required with an internal reference. The H-grade is necessary for automotive or high-temperature environments exceeding 85°C. The 'M' suffix is critical if system initialization requires the DAC output to settle at mid-scale upon power-up rather than zero-scale. Verify supply voltage constraints allow for the minimum 4.5V requirement.

Part Context

This component belongs to the LTC2631 family of single-channel DACs available in 8-, 10-, and 12-bit resolutions. The HTS8 variant specifically denotes the H-grade (automotive temp), TSOT-23 package, and mid-scale reset configuration. It shares the same pinout and core architecture as the C and I grades but offers extended thermal performance suitable for harsher environments.

Replacement Considerations

Direct substitutes within the same family include LTC2631HTS8-LZ8#TRPBF (zero-scale reset) or LTC2631ITS8-LM8#TRPBF (industrial temperature grade). Cross-vendor replacements require matching the 8-bit resolution, I²C interface, 4.096V full-scale range, and TSOT-23-8 package footprint.