LTC2633HTS8-LZ8#TRPBF

Overview

The LTC2633HTS8-LZ8#TRPBF is a dual-channel, 8-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It integrates a precision internal reference with a temperature coefficient of 10ppm/°C and operates within a supply voltage range of 2.7V to 5.5V. The device features rail-to-rail output buffers and guarantees monotonicity across the –40°C to 125°C automotive temperature range. Communication is handled via a 2-wire I²C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. Upon power-up, the outputs reset to zero-scale. Key electrical specifications include a maximum integral nonlinearity (INL) error of ±2.5 LSB, a typical supply current of 0.4mA at 3V, and a settling time of 4.5µs for 8-bit resolution.

Feature Summary

• Dual 8-bit DAC channels with integrated 10ppm/°C precision reference
• Rail-to-rail output buffers guaranteed monotonic over –40°C to 125°C
• I²C interface supporting 100kHz and 400kHz clock rates
• Power-on reset to zero-scale for consistent system initialization

Applications

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

Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging containing 2,500 units. Confirm the H-grade designation corresponds to the automotive temperature range of –40°C to 125°C. Ensure the LZ code specifies the zero-scale power-on reset behavior. Cross-reference the manufacturer part number with official Analog Devices documentation to confirm lead-free status and RoHS compliance before procurement.

Selection Notes

Select this component when a dual-channel DAC with low pin count in an 8-lead TSOT-23 package is required. The 8-bit resolution is suitable for applications not requiring high precision but needing low power consumption. Choose this variant over the 10-bit or 12-bit versions if cost or speed is prioritized over linearity accuracy. The zero-scale reset feature is critical for systems where downstream circuits must remain inactive during startup.

Part Context

This part belongs to the LTC2633 family of dual DACs, which also includes 10-bit and 12-bit variants. The 'H' grade denotes the extended automotive temperature range compared to the commercial 'C' grade. The 'L' suffix indicates a 2.5V full-scale output derived from the internal reference, whereas 'H' would indicate 4.096V. The 'Z' reset code distinguishes it from mid-scale or high-impedance reset options available in other parts of the series.

Replacement Considerations

Direct replacements within the same family include LTC2633HTS8-LI8#TRPBF (mid-scale reset) or LTC2633HTS8-HZ8#TRPBF (4.096V full-scale). For higher resolution needs, consider the LTC2633AHTS8-LZ10#TRPBF or LTC2633AHTS8-LZ12#TRPBF, noting the change in INL performance and supply voltage requirements for the H-grade variants.