LTC2631CTS8-HZ12#TRPBF

Overview

The LTC2631CTS8-HZ12#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 standard (100kHz) and fast (400kHz) modes. Key electrical characteristics include a maximum integral nonlinearity (INL) error of ±2.5 LSBs, a typical settling time of 4.6µs at ±1LSB, and a power-on reset function that clears the output to zero-scale upon power-up. It is housed in an 8-lead TSOT-23 package.

Feature Summary

• Integrated 4.096V precision reference with 10ppm/°C temperature coefficient
• I²C interface with bidirectional data transfer up to 400kHz
• Power-on reset circuit configured for zero-scale output initialization
• Rail-to-rail buffered output guaranteed monotonic over temperature

Applications

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

Procurement Notes

Verify the specific ordering suffix #TRPBF confirms the tape and reel packaging quantity of 2,500 pieces. Confirm the H-grade designation matches the required -40°C to 125°C operating temperature range and the Z-suffix ensures the zero-scale power-on reset behavior. Ensure the CTS8 package type aligns with the PCB footprint design.

Selection Notes

Select this part when a 12-bit resolution with a 4.096V full-scale range is required in a compact TSOT-23 package. The H-grade variant supports automotive temperature ranges (-40°C to 125°C). Choose the Z-suffix if system safety requires the DAC output to default to zero volts during power-up sequences rather than mid-scale.

Part Context

This component belongs to the LTC2631 family of single-channel I²C DACs. Variants within the family differ by resolution (8, 10, or 12 bits), full-scale voltage (2.5V or 4.096V), and power-on reset state (mid-scale or zero-scale). The LTC2631-L series operates on lower supply voltages (2.7V–5.5V) with a 2.5V reference, whereas the LTC2631-H series requires 4.5V–5.5V for its 4.096V reference.

Replacement Considerations

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