LTC2633ACTS8-LO12#TRPBF

Overview

The LTC2633ACTS8-LO12#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 providing a 2.5V full-scale output 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) of ±1.5 LSB, rail-to-rail output buffers, and guaranteed monotonicity over the –40°C to 125°C temperature range. Supply current is typically 0.4mA at 3V.

Feature Summary

• Dual 12-bit DACs with integrated 2.5V precision reference (10ppm/°C drift)
• Maximum INL error of ±1.5 LSB for high accuracy
• Rail-to-rail output buffers with 2.7V to 5.5V single-supply operation
• Power-on reset configured for High Impedance state upon startup

Applications

• Mobile communications systems
• Process control and industrial automation
• Portable equipment requiring low power consumption
• Automotive electronics
• Power supply margining

Procurement Notes

Verify the specific ordering suffix #TRPBF indicates a 2,500-piece tape and reel packaging format. Confirm that the 'A' grade designation ensures the tighter ±1.5 LSB INL specification compared to standard grades. Ensure the 'O' power-on reset code matches system requirements for high-impedance outputs during initialization.

Selection Notes

Select this part when a compact dual-channel solution with high linearity is required. The 'L' suffix denotes the 2.5V internal reference option, suitable for lower voltage applications compared to the 4.096V 'H' variant. The 'O' reset code is critical for designs where downstream circuits must remain inactive or isolated immediately after power-up.

Part Context

This component belongs to the LTC2633 family of dual DACs, which also includes variants with 10-bit and 8-bit resolutions. The family shares the same 8-lead TSOT-23 footprint and I²C interface architecture. Variations exist in accuracy grades ('A' vs standard), reference voltages ('L' vs 'H'), and power-on reset behaviors ('I', 'X', 'Z', 'O').

Replacement Considerations

Direct replacements within the same family include LTC2633ACTS8-LI12#TRPBF (Mid-Scale reset) or LTC2633ACTS8-LZ12#TRPBF (Zero-Scale reset). For higher resolution needs, consider the quad-channel LTC2635 series, though pinout compatibility differs.