LTC2633CTS8-LZ8#TRPBF

Overview

The LTC2633CTS8-LZ8#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 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 specifications include a maximum integral nonlinearity (INL) error of ±0.5 LSB, rail-to-rail output buffers, and guaranteed monotonicity over the commercial temperature range of 0°C to 70°C. Upon power-up, the outputs reset to zero-scale.

Feature Summary

• Dual 8-bit DACs with integrated 2.5V precision reference (10ppm/°C drift)
• I²C interface with selectable standard (100kHz) and fast (400kHz) clock rates
• Rail-to-rail output buffers with ±0.5 LSB maximum INL error
• Power-on reset to zero-scale for consistent system initialization

Applications

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

Procurement Notes

Verify the specific ordering suffix #TRPBF indicates a tape and reel quantity of 2,500 pieces. Confirm that the 'C' grade designation aligns with the required commercial operating temperature range of 0°C to 70°C. Ensure the LZ8 code corresponds to the 8-bit resolution and zero-scale power-on reset configuration as defined in the manufacturer's selection guide.

Selection Notes

Select this component when a compact dual-channel solution with low power consumption (0.4mA at 3V) is required. The 8-bit resolution is suitable for applications where ±0.5 LSB linearity is sufficient. Verify that the 2.7V to 5.5V supply range matches the system voltage rails. For higher accuracy requirements, consider the LTC2633A variant which offers improved linearity specifications.

Part Context

This part belongs to the LTC2633 family of dual DACs, which also includes 10-bit and 12-bit variants. The family shares the same 8-lead TSOT-23 package and I²C interface architecture. Variants differ primarily in resolution, linearity grades (standard vs. A-grade), and power-on reset behaviors. The LTS8 package type ensures compatibility with surface-mount assembly processes common in consumer and industrial electronics.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. When replacing this component, ensure the new device supports the same I²C addressing scheme, pinout compatibility, and supply voltage range. Verify that the replacement meets the specific 8-bit resolution and zero-scale reset requirements.