LTC2631CTS8-LZ12#TRPBF

Overview

The LTC2631CTS8-LZ12#TRPBF is a single-channel, 12-bit voltage-output digital-to-analog converter housed in an 8-lead TSOT-23 package. It features an integrated precision reference with a full-scale output of 2.5V and a temperature coefficient of 10ppm/°C. The device operates on a single supply ranging from 2.7V to 5.5V and utilizes a 2-wire I²C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. It includes a power-on reset circuit configured to clear the output to zero-scale upon initialization. The DAC incorporates a rail-to-rail output buffer guaranteed to be monotonic over the operating temperature range.

Feature Summary

• 12-bit resolution with maximum integral nonlinearity error of ±2.5LSB
• Integrated 2.5V full-scale reference with 10ppm/°C drift
• I²C interface with selectable slave addresses via CA0/CA1 pins
• Power-on reset to zero-scale output

Applications

• Mobile communications systems
• Process control and industrial automation
• Portable battery-powered equipment

Procurement Notes

Verify that the ordering suffix #TRPBF corresponds to the tape and reel packaging configuration specified by Analog Devices. Confirm the component grade matches the required operational temperature range for the specific application environment. Ensure the pinout configuration aligns with the design schematic, particularly regarding the address selection pins CA0 and CA1.

Selection Notes

Select this part when a 12-bit resolution with a 2.5V internal reference is required in a compact TSOT-23 footprint. The LZ suffix indicates a zero-scale power-on reset state, which is critical for applications requiring a known safe initial output condition. Verify that the system supply voltage remains within the 2.7V to 5.5V range to ensure specified performance levels are maintained.

Part Context

This component 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), and power-on reset behavior (zero or mid-scale). The LTS8 package denotes the 8-lead ThinSOT plastic package. The C grade specifies operation within the commercial temperature range of 0°C to 70°C.

Replacement Considerations

Direct replacements include other LTC2631 variants such as LTC2631LTS8-LM12#TRPBF for mid-scale reset or LTC2631ITS8-LZ12#TRPBF for industrial temperature range. Cross-family alternatives may require verification of pin compatibility and register mapping.