LTC2631ITS8-HM10#TRMPBF

Overview

The LTC2631ITS8-HM10#TRMPBF is a single 10-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. Key electrical specifications include a maximum Integral Nonlinearity (INL) of ±1 LSB, a typical settling time of 4.2µs at 5V, and a power-down current of 1.8µA maximum for the I-grade. The part includes a power-on reset circuit configured to initialize the output to mid-scale.

Feature Summary

• 10-bit resolution with ±1 LSB maximum INL error
• Integrated 4.096V reference with 10ppm/°C temperature coefficient
• I²C compatible serial interface supporting 400kHz fast mode
• Power-on reset to mid-scale option (suffix HM)
• Guaranteed monotonic operation over the full operating temperature range

Applications

• Process control and industrial automation systems
• Portable battery-powered equipment
• Automatic test equipment
• Mobile communications devices

Procurement Notes

Verify the specific ordering suffix #TRMPBF indicates a 500-unit tape and reel packaging configuration. Confirm that the 'I' grade designation matches the required industrial temperature range of –40°C to 85°C for the application environment. Ensure the system supply voltage remains within the 4.5V to 5.5V window specified for the H-series full-scale voltage.

Selection Notes

Select this component when a compact 10-bit DAC with an internal high-accuracy reference is required. The H-grade variant necessitates a minimum 4.5V supply, distinguishing it from L-grade parts that operate down to 2.7V. The HM suffix ensures the DAC output initializes to mid-scale upon power-up, which may be necessary for specific fail-safe requirements compared to zero-scale initialization.

Part Context

This part belongs to the LTC2631 family of single-channel voltage-output DACs. The family offers variations in resolution (8, 10, or 12 bits), full-scale voltage (2.5V or 4.096V), and power-on reset behavior (zero or mid-scale). The ITS8 package denotes the 8-lead ThinSOT (TSOT-23) plastic housing used across the series.

Replacement Considerations

Direct pin-compatible substitutes within the same family include LTC2631ITS8-LM10#TRMPBF (2.5V FS, requires lower min voltage) or LTC2631ITS8-HZ10#TRMPBF (zero-scale reset). Cross-family replacements require verification of interface compatibility and pinout alignment.