LTC2634IMSE-LZ10#PBF

Overview

The LTC2634IMSE-LZ10#PBF is a quad 10-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 supply ranging from 2.7V to 5.5V and utilizes a 3-wire SPI/MICROWIRE compatible serial interface with clock rates up to 50MHz. It includes rail-to-rail output buffers, double-buffered data latches, and a power-on reset circuit that defaults outputs to zero-scale. The component is housed in a 10-lead MSOP package and supports industrial operating temperatures from -40°C to 85°C.

Feature Summary

• Quad 10-bit resolution with integrated 2.5V precision reference
• Rail-to-rail output buffers guaranteed monotonic over -40°C to 125°C
• 3-wire SPI/MICROWIRE interface supporting up to 50MHz clock rates
• Power-on reset to zero-scale for consistent system initialization

Applications

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

Procurement Notes

Verify the specific ordering suffix #PBF indicates lead-free compliance and standard packaging. Confirm the IMSE designation corresponds to the Industrial temperature grade (-40°C to 85°C) and the MSE package type. Ensure the LZ10 suffix matches the required zero-scale power-on reset behavior and 10-bit resolution specifications before procurement.

Selection Notes

Select this part when a quad DAC configuration with low crosstalk and high accuracy is required. The internal 2.5V reference simplifies design by eliminating external components. Choose the IMSE variant for industrial temperature environments. Verify that the 3-wire serial interface aligns with the host microcontroller's communication capabilities and that the 2.7V minimum supply voltage meets system requirements.

Part Context

This component belongs to the LTC2634 family, which offers 12-, 10-, and 8-bit resolutions in both QFN and MSOP packages. The IMSE-LZ10 variant specifically targets applications needing four independent channels with precise zero-scale initialization. It shares architectural similarities with the I2C-compatible LTC2635 but differs in its serial interface protocol.

Replacement Considerations

The LTC2634IMSE-HZ10#PBF provides identical electrical characteristics but resets to mid-scale instead of zero-scale upon power-up. For I2C interface requirements, the LTC2635 series serves as a functional alternative with similar pinouts and performance metrics.