LTC2644HMS-L10#PBF

Overview

The LTC2644HMS-L10#PBF is a dual 10-bit PWM-to-voltage output DAC in a 12-lead MSOP package. It features an integrated 10ppm/°C reference providing a 2.5V full-scale output and rail-to-rail buffered outputs capable of sourcing/sinking up to 10mA at 5V. The device converts PWM inputs (30Hz–25kHz) into stable analog voltages with typical settling time of 7.4µs. Key specifications include ±1LSB maximum DNL, ±2LSB maximum INL, and a supply voltage range of 2.7V to 5.5V. It supports pin-selectable internal or external references and includes power-down functionality.

Feature Summary

• Dual 10-bit resolution with no latency PWM-to-voltage conversion
• Integrated 10ppm/°C precision reference for 2.5V full-scale output
• Rail-to-rail output buffers with 10mA drive capability at 5V
• Pin-selectable idle modes: zero-scale, full-scale, hold, or power-down

Applications

• Digital calibration systems
• Trimming and adjustment circuits
• Level setting applications
• Process control and industrial automation
• Instrumentation and automotive systems

Procurement Notes

Verify the suffix #PBF indicates tube packaging rather than tape and reel. Confirm the H-grade designation corresponds to the –40°C to +125°C operating temperature range. Ensure the L10 suffix matches the required 10-bit resolution and 2.5V internal reference configuration before procurement.

Selection Notes

Select this component when low-latency conversion from PWM signals is required without external filters. The 10-bit resolution suits applications needing ±2LSB INL accuracy. Consider the 12-lead MSOP package for space-constrained designs. Verify that the input PWM frequency remains within the 25kHz limit for 10-bit operation to maintain specified linearity.

Part Context

This part belongs to the LTC2644 family of dual PWM-to-VOUT DACs. Variants differ by resolution (8-, 10-, or 12-bit) and temperature grade (C, I, or H). The L10 suffix specifically denotes the 10-bit version with a 2.5V full-scale output derived from the internal reference.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Evaluate other members of the LTC2644 family or similar Analog Devices PWM-to-DAC converters based on channel count, resolution, and package compatibility.