LTC2631ACTS8-LM12#TRPBF

Overview

The LTC2631ACTS8-LM12#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 2.5V and operates from a single 2.7V to 5.5V supply. The device utilizes a 2-wire I²C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. Key electrical specifications include a maximum Integral Nonlinearity (INL) error of ±1 LSB, a typical settling time of 4.1µs at 3V, and a power consumption of 180µA at 3V. It incorporates a power-on reset circuit configured to reset to mid-scale upon power-up.

Feature Summary

• 12-bit resolution with ±1 LSB maximum INL error
• Integrated 2.5V full-scale reference with 10ppm/°C temperature coefficient
• I²C interface with selectable addresses via CA0 pin
• Power-on reset to mid-scale option

Applications

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

Procurement Notes

Verify the ordering suffix #TRMPBF indicates a 500-piece tape and reel quantity, whereas #TRPBF typically denotes a 2,500-piece reel. Confirm the specific package type TSOT-23 and temperature grade C (0°C to 70°C) match the design requirements. Ensure the mid-scale reset configuration (suffix M) aligns with system initialization needs.

Selection Notes

Select this component for applications requiring high DC accuracy in a compact 8-lead TSOT-23 package. The 2.5V full-scale range suits low-voltage single-supply systems operating between 2.7V and 5.5V. Choose the 'A' grade for guaranteed ±1 LSB INL performance. Consider the H-grade variant if operation up to 125°C or a 4.096V output range is required.

Part Context

This part belongs to the LTC2631 family of single-channel DACs. Variants differ by resolution (8, 10, or 12 bits), full-scale voltage (2.5V or 4.096V), power-on reset behavior (zero or mid-scale), and addressability (Z-series with two address pins vs. M-series with one). The ACTS8-LM12 designation specifies the 12-bit A-grade, 2.5V mid-scale reset version in the ThinSOT package.

Replacement Considerations

Direct substitutes within the same family include LTC2631ACTS8-LZ12#TRPBF (zero-scale reset) or LTC2631ACTS8-HM12#TRPBF (4.096V output, requires 4.5V–5.5V supply). Cross-family replacements require verification of I²C compatibility and pinout alignment.