LTC2633CTS8-LX12#TRMPBF

Overview

The LTC2633CTS8-LX12#TRMPBF is a dual 12-bit voltage-output digital-to-analog converter (DAC) from Analog Devices, 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 2.7V to 5.5V supply and communicates via 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 ±1.5 LSB, a supply current of 0.4mA at 3V, and rail-to-rail output buffers. The part is guaranteed monotonic over the commercial temperature range of 0°C to 70°C.

Feature Summary

• Dual 12-bit resolution with integrated 2.5V precision reference (10ppm/°C drift)
• Maximum INL error of ±1.5 LSB for high accuracy
• I²C interface with selectable power-on reset to mid-scale in external reference mode
• Rail-to-rail output buffers with low noise (0.75mVP-P)

Applications

• Mobile communications systems
• Process control and industrial automation
• Power supply margining
• Portable equipment
• Automotive applications

Procurement Notes

Verify the specific ordering suffix #TRMPBF indicates a 500-piece tape and reel packaging configuration, distinct from the standard 2,500-piece reel. Confirm that the 'C' grade designation aligns with the required commercial operating temperature range of 0°C to 70°C for the target application environment.

Selection Notes

Select this component when a compact dual-channel DAC with an integrated low-drift reference is required. The LX code specifies a mid-scale power-on reset behavior in external reference mode; ensure this startup state meets system safety requirements. Verify that the 2.7V minimum supply voltage is compatible with the system's power rails, as the H-grade variant requires a higher minimum voltage.

Part Context

This part belongs to the LTC2633 family of dual DACs, which offers various combinations of resolution, accuracy grades, and power-on reset options. The CTS8 designation identifies the commercial temperature grade and 8-lead TSOT-23 package type. The A suffix denotes the higher accuracy grade with ±1.5 LSB maximum INL, distinguishing it from the standard ±2.5 LSB grade parts.

Replacement Considerations

Direct replacements within the same package and pinout include other LTC2633 variants such as LTC2633CTS8-LI12 or LTC2633CTS8-LZ12, provided the different power-on reset codes are acceptable. Cross-family alternatives like the LTC2635 (quad channel) require schematic redesign due to pin count differences.