LTC2633AHTS8-LX12#TRPBF

Overview

The LTC2633AHTS8-LX12#TRPBF 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 operates on a single 2.7V to 5.5V supply. The device 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, rail-to-rail output buffers, and guaranteed monotonicity over the –40°C to 125°C temperature range. Power-on reset options allow initialization to mid-scale in external reference mode.

Feature Summary

• Dual 12-bit resolution with ±1.5 LSB maximum INL error
• Integrated 2.5V full-scale precision reference (10ppm/°C drift)
• I²C interface with selectable power-on reset to mid-scale
• Rail-to-rail output buffers guaranteed monotonic from –40°C to 125°C

Applications

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

Procurement Notes

Verify the specific ordering suffix #TRPBF indicates a 2,500-piece tape and reel packaging configuration. Confirm that the 'H' grade designation corresponds to the automotive temperature range of –40°C to 125°C as defined in the selection guide. Ensure compatibility with the required I²C address configuration via the CA0 pin before procurement.

Selection Notes

Select this part for applications requiring dual channels with high accuracy (±1.5 LSB INL) in a compact TSOT-23 footprint. The LX code specifies a power-on reset to mid-scale when using an external reference, or mid-scale in internal reference mode. Choose this variant over the LZ (zero-scale) or LI (internal reference only) codes if the system requires specific initial output states during power-up sequences.

Part Context

This component belongs to the LTC2633 family of dual DACs, which also includes 10-bit and 8-bit variants. The 'A' suffix denotes the higher accuracy grade with ±1.5 LSB INL compared to the standard ±2.5 LSB INL of non-A parts. The 'L' indicates the 2.5V full-scale internal reference option, distinct from the 'H' variant which provides 4.096V.

Replacement Considerations

Direct replacements within the same family include LTC2633AHTS8-LI12#TRPBF (reset to mid-scale in internal reference mode) or LTC2633AHTS8-LZ12#TRPBF (reset to zero-scale). For lower accuracy requirements, the LTC2633HTS8-LX12#TRPBF offers ±2.5 LSB INL. Verify that the replacement maintains the required power-on reset behavior and I²C addressing.