LTC2633CTS8-LI8#TRPBF

Overview

The LTC2633CTS8-LI8#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 on a single supply voltage ranging from 2.7V to 5.5V. The device features rail-to-rail output buffers and is guaranteed monotonic over the specified temperature range. Communication is handled via a 2-wire I²C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. The part includes a power-on reset circuit configured to initialize outputs to mid-scale in internal reference mode.

Feature Summary

• Dual 8-bit DACs with integrated 10ppm/°C precision reference
• Rail-to-rail output buffers with guaranteed monotonicity
• 2-wire I²C interface supporting 100kHz and 400kHz clock rates
• Power-on reset to mid-scale in internal reference mode

Applications

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

Procurement Notes

Verify the specific suffix #TRPBF indicates a tape and reel packaging configuration containing 2,500 pieces. Confirm that the C-grade designation aligns with commercial temperature requirements, as this variant differs from the H-grade automotive specification. Ensure the LI8 code corresponds to the required 8-bit resolution and mid-scale power-on reset behavior for system initialization.

Selection Notes

Select this component when dual low-resolution channels are required within an 8-lead TSOT-23 package. The 2.7V to 5.5V supply range accommodates both 3V and 5V logic systems. Choose this part over higher-resolution variants if cost or pin count is constrained, noting that the 8-bit resolution provides ±0.5 LSB differential nonlinearity and ±0.05 LSB integral nonlinearity typical performance.

Part Context

This part belongs to the LTC2633 family, which offers various combinations of resolution (8, 10, or 12 bits), full-scale voltage (2.5V or 4.096V), and power-on reset states. The CTS8-LI8 configuration specifically denotes the commercial temperature grade, 8-lead TSOT-23 package, 2.5V full-scale internal reference, and mid-scale reset behavior.

Replacement Considerations

Direct replacements include other LTC2633 variants with matching 8-bit resolution and mid-scale reset, such as LTC2633CTS8-LX8#TRPBF for external reference operation. Higher accuracy options like the LTC2633A series offer improved INL specifications but may require verification of power-on reset compatibility.