LTC2631CTS8-HZ8#TRMPBF

Overview

The LTC2631CTS8-HZ8#TRMPBF is an 8-bit voltage-output digital-to-analog converter (DAC) from Analog Devices Inc., housed in an 8-lead TSOT-23 package. It features a 4.096V full-scale output with an integrated 10ppm/°C reference, requiring a 4.5V to 5.5V supply. The device utilizes a 2-wire I²C interface supporting standard (100kHz) and fast (400kHz) modes. It includes a power-on reset circuit configured to clear the output to zero-scale upon power-up. Key electrical specifications include a maximum integral nonlinearity (INL) of ±0.5 LSB, a typical settling time of 3.7µs at 5V, and low power consumption of 200µA at 5V.

Feature Summary

• 8-Bit Resolution with ±0.5 LSB Maximum INL
• 4.096V Full-Scale Output with Integrated 10ppm/°C Reference
• I²C Interface with Fast Mode Support up to 400kHz
• Power-On Reset to Zero-Scale

Applications

• Mobile Communications
• Process Control and Industrial Automation
• Automatic Test Equipment
• Portable Equipment
• Automotive Systems

Procurement Notes

Verify the specific ordering suffix #TRMPBF indicates a 500-unit tape and reel configuration as defined in the manufacturer's documentation. Confirm that the H-grade temperature range (-40°C to 125°C) aligns with the application environment requirements. Ensure the system supply voltage remains within the 4.5V to 5.5V operational window specified for the H-series devices.

Selection Notes

Select this part when an 8-bit resolution is sufficient for the application, offering lower cost compared to 10 or 12-bit variants. The H-grade designation ensures operation across the automotive temperature range (-40°C to 125°C). The zero-scale power-on reset option is critical for systems requiring a known safe state immediately after power-up. Verify that the I²C address pins CA0 and CA1 are configured correctly if multiple devices share the bus.

Part Context

This component belongs to the LTC2631 family of single-channel DACs, which also includes 10-bit and 12-bit versions. The 'H' suffix denotes the automotive temperature grade, while 'Z' specifies the zero-scale power-on reset behavior. The '8' indicates the 8-bit resolution variant. Other family members may offer higher precision or different reset behaviors but require similar interface and packaging considerations.

Replacement Considerations

Direct pin-compatible replacements within the same family include other LTC2631 variants with different resolutions (e.g., LTC2631CTS8-HZ10 or LTC2631CTS8-HZ12) or reset options (e.g., LTC2631CTS8-HM8). Ensure that any substitute matches the required temperature grade and power-on reset state. Cross-family replacements require verification of I²C compatibility and output drive capabilities.