LTC2631AITS8-LZ12#TRPBF

Overview

The LTC2631AITS8-LZ12#TRPBF is a single-channel, 12-bit voltage-output digital-to-analog converter (DAC) from Analog Devices Inc. It features an integrated precision reference with a temperature coefficient of 10ppm/°C and operates within a supply voltage range of 4.5V to 5.5V. The device provides a full-scale output of 4.096V and 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 VCC = 5V, and a power-down current of 4µA maximum. The component is housed in an 8-lead TSOT-23 package and is rated for operation over an extended temperature range of –40°C to 125°C.

Feature Summary

• 12-bit resolution with ±1LSB maximum INL error
• Integrated 10ppm/°C precision reference yielding 4.096V full-scale output
• I²C interface with 400kHz fast mode support
• Power-on reset to zero-scale
• Extended operating temperature range: –40°C to 125°C

Applications

• Process control and industrial automation systems
• Portable battery-powered equipment
• Automotive electronic modules
• Optical networking instrumentation

Procurement Notes

Verify the specific ordering suffixes against official documentation to confirm pin configuration and package type. The #TRMPBF suffix indicates a 500-unit tape and reel quantity. Confirm that the 4.5V minimum supply voltage requirement aligns with the target system design before procurement.

Selection Notes

Select this part when a 12-bit DAC with high accuracy (±1LSB INL) and low drift is required in a compact surface-mount package. Ensure the application supply voltage remains above 4.5V, as lower voltages are not supported by the H-grade variant. Consider the zero-scale power-on reset feature if system safety requires a defined initial output state.

Part Context

This component belongs to the LTC2631 family of single-channel DACs available in 8-, 10-, and 12-bit resolutions. The 'A' designation specifies the highest accuracy grade with ±1LSB INL. The 'H' indicates the automotive temperature grade and 4.096V full-scale range, while 'Z' denotes the zero-scale power-on reset option. Other variants offer different reset states or full-scale voltages.

Replacement Considerations

Direct substitutes within the same family include LTC2631AITS8-HM12#TRMPBF (mid-scale reset) or LTC2631AITS8-LZ12#TRMPBF (lower supply voltage range). Cross-family replacements require verification of pin compatibility and interface protocols.