LTC2631ITS8-HZ12#TRPBF

Overview

The LTC2631ITS8-HZ12#TRPBF 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 that is guaranteed monotonic over the operating temperature range. It utilizes a 2-wire I²C-compatible serial interface supporting standard mode (100kHz) and fast mode (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.

Feature Summary

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

Applications

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

Procurement Notes

Verify the specific suffix #TRPBF indicates a tape and reel packaging format containing 2,500 pieces. Confirm the H-grade designation corresponds to the automotive temperature range of –40°C to 125°C. Ensure the Z-suffix is recognized as the configuration for power-on reset to zero-scale. Cross-reference the manufacturer's ordering information for lead finish details.

Selection Notes

Select this component when a 12-bit resolution and a 4.096V full-scale output are required from a single supply between 4.5V and 5.5V. The H-grade temperature rating is necessary for applications requiring operation up to 125°C. Choose this part if the system design mandates a zero-scale output state immediately following power-up. Verify that the I²C bus speed requirements align with the supported 400kHz fast mode.

Part Context

This device belongs to the LTC2631 family of single voltage-output DACs available in 12-, 10-, and 8-bit resolutions. The family shares a common 8-lead TSOT-23 package and I²C interface architecture. Variations within the family differ by internal reference voltage (2.5V or 4.096V), power-on reset behavior (zero or mid-scale), and temperature grade (Commercial, Industrial, or Automotive).

Replacement Considerations

Publicly confirmed substitute part numbers are not provided in the source documentation.