LTC2634CMSE-LMI8#TRPBF

Overview

The LTC2634CMSE-LMI8#TRPBF is a quad 8-bit voltage output digital-to-analog converter (DAC) from Analog Devices. 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 includes rail-to-rail output buffers guaranteed monotonic over the commercial temperature range of 0°C to 70°C. Communication is handled via a 3-wire SPI/MICROWIRE compatible interface supporting clock rates up to 50MHz. Key electrical parameters include a settling time of 3.3µs, integral nonlinearity (INL) of ±0.5 LSB, and differential nonlinearity (DNL) of ±0.5 LSB. Supply current is typically 0.6mA at 3V.

Feature Summary

• Quad 8-bit resolution with integrated 2.5V full-scale reference
• Rail-to-rail output buffers with guaranteed monotonicity
• 3-wire SPI/MICROWIRE serial interface with 50MHz clock rate
• Power-on reset to mid-scale in internal reference mode

Applications

• Mobile communications
• Process control and industrial automation
• Automatic test equipment
• Portable equipment

Procurement Notes

Verify the package type corresponds to the MSE suffix, indicating a 10-lead MSOP configuration. Confirm the temperature grade 'C' aligns with the required 0°C to 70°C operating range for the specific application environment. Ensure the '#TRPBF' suffix matches the desired tape and reel packaging format for automated assembly processes.

Selection Notes

Select this component when a quad-channel DAC with moderate 8-bit resolution is required. The internal 2.5V reference simplifies design by eliminating external reference components. Choose this part over higher-resolution variants if cost or power consumption is a primary constraint, while still requiring rail-to-rail output capability and low crosstalk performance.

Part Context

This part belongs to the LTC2634 family, which offers various combinations of resolution (8, 10, 12 bits), full-scale voltages (2.5V or 4.096V), and power-on reset behaviors. The CMSE designation specifically identifies the Commercial temperature grade, MSOP package, Mid-Scale internal reset, and 8-bit resolution variant within this extensive product line.

Replacement Considerations

Direct pin-compatible replacements within the same package and resolution include other LTC2634 variants such as LTC2634IMSE-LMI8#PBF for Industrial temperature range or LTC2634HSE-LMI8#PBF for Automotive applications. Cross-family replacements like the LTC2635 offer I2C compatibility instead of SPI.