LTC2634IMSE-HMI8#TRPBF

Overview

The LTC2634IMSE-HMI8#TRPBF is a quad 8-bit voltage output digital-to-analog converter (DAC) from Analog Devices. It features an integrated precision reference providing a 4.096V full-scale output and operates on a single 4.5V to 5.5V supply. The device utilizes a 3-wire SPI/MICROWIRE compatible serial interface with clock rates up to 50MHz. Key electrical specifications include a maximum integral nonlinearity (INL) of ±0.5 LSB, a settling time of 4.2µs at 5V, and a typical supply current of 0.7mA. It incorporates double-buffered data latches and resets to mid-scale upon power-up in internal reference mode.

Feature Summary

• Quad 8-bit DAC architecture with rail-to-rail buffered outputs
• Integrated 10ppm/°C precision reference yielding 4.096V full-scale
• SPI/MICROWIRE compatible 3-wire serial interface operating up to 50MHz
• Double-buffered data latches for ultralow crosstalk between channels

Applications

• Process control and industrial automation systems
• Portable battery-powered equipment
• Automatic test equipment
• Mobile communications infrastructure

Procurement Notes

Verify the package type corresponds to the 10-lead MSOP configuration indicated by the MSE suffix. Confirm the temperature grade matches the Industrial specification (-40°C to 85°C) required for the target environment. Ensure the ordering suffix #TRPBF aligns with the required tape and reel quantity for manufacturing integration.

Selection Notes

Select this component when four independent 8-bit voltage outputs are required within a compact footprint. The H suffix indicates compatibility with 4.5V to 5.5V supplies and a 4.096V internal reference range. Choose this part over higher resolution variants if system accuracy requirements are met by 8-bit performance, allowing for lower power consumption and reduced cost.

Part Context

This part belongs to the LTC2634 family, which offers configurable resolutions of 12, 10, or 8 bits across quad and octal channel counts. The IMSE designation specifically identifies the Industrial temperature grade housed in a 10-lead MSOP package. This family shares common architectural features such as low noise buffers and selectable reference modes.

Replacement Considerations

Direct pin-compatible replacements within the same package include other LTC2634 variants with different resolutions or reset behaviors, such as the LTC2634IMSE-HMX8#TRPBF. Cross-family substitutes like the LTC2637 require interface adaptation due to I2C connectivity.