LTC2631AITS8-HM12#TRPBF

Overview

The LTC2631AITS8-HM12#TRPBF is a single-channel, 12-bit voltage-output digital-to-analog converter (DAC) manufactured by 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 clock rates up to 400kHz. Key electrical specifications include a maximum Integral Nonlinearity (INL) error of ±1LSB, a typical settling time of 4.6µs at ±1LSB, and low power consumption of 200µA at 5V. The unit incorporates a power-on reset circuit configured to initialize the output to mid-scale upon power-up.

Feature Summary

• 12-Bit Resolution with ±1LSB Maximum INL Error
• Integrated 4.096V Reference with 10ppm/°C Temperature Coefficient
• I²C Interface with 400kHz Fast Mode Support
• Power-On Reset to Mid-Scale Configuration

Applications

• Process Control and Industrial Automation
• Portable Battery-Powered Equipment
• Automotive Systems
• Optical Networking

Procurement Notes

Verify the specific ordering suffix #TRMPBF indicates a 500-unit tape and reel quantity, distinct from the standard 2,500-unit #TRPBF configuration. Confirm that the H-grade temperature rating (-40°C to 125°C) aligns with the thermal requirements of the target application environment before finalizing procurement orders.

Selection Notes

Select this component when a 12-bit resolution with high accuracy (±1LSB INL) is required in a compact TSOT-23 package. Ensure the system supply voltage remains between 4.5V and 5.5V, as lower voltages are insufficient for the H-grade internal reference. Choose this part over the L-grade variant if a 4.096V full-scale output is necessary rather than 2.5V.

Part Context

This part belongs to the LTC2631 family of single-channel DACs, which also includes 10-bit and 8-bit variants. The 'A' designation specifies the higher accuracy grade with ±1LSB INL, while 'H' denotes the automotive temperature range. The 'M' suffix configures the power-on reset state to mid-scale, distinguishing it from the 'Z' suffix which resets to zero-scale.

Replacement Considerations

Direct pin-compatible replacements within the same family include the LTC2631AITS8-LM12#TRPBF for 2.5V applications or the LTC2631AITS8-HZ12#TRPBF if a zero-scale power-on reset is preferred. Verify that any substitute maintains the 4.5V minimum supply requirement associated with the H-grade internal reference.