LTC2633HTS8-HI8#TRPBF

Overview

The LTC2633HTS8-HI8#TRPBF is a dual 8-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 4.096V and operates on a single supply voltage ranging from 4.5V to 5.5V. 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 ±2.5 LSB, a typical supply current of 0.5mA at 5V, and rail-to-rail output buffers that are guaranteed monotonic over the –40°C to 125°C temperature range.

Feature Summary

• Dual 8-bit DACs with integrated 4.096V 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
• Low power consumption: 0.5mA typical supply current at 5V

Applications

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

Procurement Notes

Verify the specific ordering suffix #TRPBF indicates a tape and reel quantity of 2,500 pieces. Confirm the H-grade designation corresponds to the automotive temperature range of –40°C to 125°C. Ensure the HI code is correctly interpreted as resetting outputs to mid-scale in internal reference mode upon power-up. Cross-reference the manufacturer part number with official Analog Devices documentation to confirm lead-free status and RoHS compliance.

Selection Notes

Select this component when a dual-channel, low-pin-count DAC is required for applications needing a fixed 4.096V full-scale range. The 8-bit resolution is suitable for cost-sensitive applications where ±2.5 LSB INL accuracy is sufficient. Choose this variant over the 'A' grade if higher linearity accuracy (±1.5 LSB) is not strictly necessary, or opt for the 'A' grade if tighter linearity specs are required. Ensure the system supply voltage remains within the 4.5V to 5.5V range specified for the H-grade devices.

Part Context

This part belongs to the LTC2633 family of dual DACs, which also includes 10-bit and 12-bit variants (LTC2633-10, LTC2633-12). The family shares the same 8-lead TSOT-23 package and I²C interface architecture. Variants differ primarily in resolution, linearity accuracy (standard vs. A-grade), and power-on reset behavior. The HTS8 suffix denotes the high-temperature grade and thin SOT-23 packaging format common across the series.

Replacement Considerations

Direct pin-compatible replacements within the same family include LTC2633HTS8-HI10#TRPBF (10-bit) and LTC2633HTS8-HI12#TRPBF (12-bit), provided the system can accommodate the different resolution and linearity characteristics. Other families such as the LTC2635 (quad channel) require PCB redesign due to package differences.