LTC2631CTS8-HZ12#TRMPBF

Overview

The LTC2631CTS8-HZ12#TRMPBF is a single-channel, 12-bit voltage-output digital-to-analog converter (DAC) manufactured by Analog Devices Inc. It integrates a precision reference with a temperature coefficient of 10ppm/°C and operates within a supply voltage range of 4.5V to 5.5V. The device features a rail-to-rail output buffer guaranteed monotonic over temperature, supporting a full-scale output of 4.096V. It utilizes a 2-wire I²C-compatible serial interface operating at clock rates up to 400kHz. The part includes a power-on reset circuit configured to clear the output to zero-scale upon initialization. It is housed in an 8-lead TSOT-23 package and supports operation from –40°C to 125°C.

Feature Summary

• 12-bit resolution with maximum Integral Nonlinearity (INL) error of ±2.5 LSB
• Integrated 10ppm/°C reference providing 4.096V full-scale output
• I²C interface supporting standard (100kHz) and fast (400kHz) modes
• Power-on reset function clears output to zero-scale

Applications

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

Procurement Notes

Verify that the specific suffix #TRMPBF corresponds to the 500-piece tape and reel packaging option as defined in the manufacturer's ordering information. Confirm the H-grade temperature rating (-40°C to 125°C) matches the application requirements. Ensure the 4.5V minimum supply voltage constraint is compatible with the system power design.

Selection Notes

Select this component when a 12-bit DAC with a 4.096V internal reference is required in a compact TSOT-23 package. The H-grade variant is necessary for automotive or high-temperature environments exceeding 85°C. Verify that the I²C address configuration via CA0 and CA1 pins allows for proper bus addressing in the target system topology.

Part Context

This part belongs to the LTC2631 family of single-channel DACs available in 8-, 10-, and 12-bit resolutions. The 'H' designation indicates the automotive temperature grade (-40°C to 125°C), while 'Z' specifies the zero-scale power-on reset behavior. The 'LTC2631' base model encompasses variations with different full-scale voltages (2.5V or 4.096V) and reference configurations.

Replacement Considerations

Compatible substitutes within the same family include LTC2631HMS8-HZ12#TRMPBF (Mid-Scale reset) or LTC2631IMS8-HZ12#TRMPBF (Industrial temperature grade). For lower resolution needs, LTC2631ITS8-HZ10#TRMPBF offers 10-bit performance.