LTC2637IDE-LMX10#PBF

Overview

The LTC2637IDE-LMX10#PBF is an octal 10-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features a selectable internal or external reference, with the 'L' suffix indicating a 2.5V full-scale output when using the internal reference. The device operates on a single 2.7V to 5.5V supply and communicates via a 2-wire I2C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. Key electrical characteristics include a maximum integral nonlinearity (INL) of ±1 LSB, a settling time of 4.1µs at 3V, and ultralow DAC-to-DAC crosstalk below 3nV•s. The part is housed in a 16-lead MSOP package.

Feature Summary

• Octal 10-bit resolution with rail-to-rail buffered outputs
• Selectable internal (2.5V) or external reference input
• Power-on reset configured to mid-scale for external reference mode
• Guaranteed monotonic operation over –40°C to 85°C temperature range

Applications

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

Procurement Notes

Verify the specific ordering suffix LMX10 against the manufacturer's current documentation to confirm the power-on reset behavior and package type. Ensure the design supports the required I2C clock rates and pull-up configurations. Check for any recent product change notices regarding lead finish or manufacturing site updates that may affect compliance requirements.

Selection Notes

Select this component when eight independent 10-bit voltage outputs are required in a compact surface-mount package. The LMX10 variant is appropriate for designs requiring a mid-scale reset state upon power-up when utilizing an external reference voltage. Consider the 2.7V to 5.5V supply range and the low power consumption of approximately 1mA total supply current for battery-operated applications.

Part Context

This part belongs to the LTC2637 family, which includes 8-bit, 10-bit, and 12-bit variants. The 'I' designation indicates the Industrial temperature grade (–40°C to 85°C). The 'MS' package code corresponds to the 16-lead Mini Small Outline Package (MSOP). Other family members include the LTC2637IDE-LZ10#PBF and LTC2637IMS-HMI10#PBF, differing in resolution, reset behavior, and temperature grade.

Replacement Considerations

Direct functional substitutes within the same family include the LTC2637IMS-LMX10#PBF (same specs, different package) or the LTC2637CMS-LMX10#PBF (Commercial temperature grade). For higher precision, the 12-bit LTC2637IMS-LMX12#PBF is pin-compatible but offers finer resolution. Lower resolution options like the 8-bit version provide similar performance with reduced cost.