LTC2645HMS-L12#PBF

Digital To Analog Converters Overview

The LTC2645HMS-L12#PBF is a quad 12-bit PWM-to-voltage output DAC from Analog Devices, housed in a 16-lead MSOP package. It integrates a high-accuracy 10ppm/°C reference, providing a 2.5V full-scale output. The device converts PWM input signals into stable analog voltages with no latency, updating outputs within 8µs typically. It operates on a single 2.7V to 5.5V supply and supports PWM inputs from 1.71V to 5.5V. Key electrical parameters include ±2.5LSB maximum INL, ±1LSB maximum DNL, and rail-to-rail output buffers capable of sourcing/sinking up to 5mA at 3V or 10mA at 5V.

Digital To Analog Converters Feature Summary

• Quad 12-bit resolution with integrated 10ppm/°C reference for 2.5V full-scale output
• No latency PWM-to-voltage conversion with settling time under 8µs
• Pin-selectable internal or external reference modes
• Rail-to-rail output buffers with 5mA (3V) or 10mA (5V) drive capability

Digital To Analog Converters Applications

• Digital Calibration
• Trimming and Adjustment
• Level Setting
• Process Control and Industrial Automation
• Instrumentation

Digital To Analog Converters Procurement Notes

Verify the specific suffix L12 confirms the 12-bit resolution and 2.5V internal reference configuration. Confirm the H-grade designation indicates operation across the –40°C to 125°C temperature range. Ensure the #PBF suffix denotes lead-free compliance and RoHS adherence before procurement.

Digital To Analog Converters Selection Notes

Select this component when low-latency voltage generation from PWM signals is required without external filters. The 12-bit resolution suits applications needing precise calibration. Consider the 16-lead MSOP package for space-constrained designs. Verify that the PWM input frequency remains within the 30Hz to 6.25kHz range for optimal accuracy.

Digital To Analog Converters Part Context

This part belongs to the LTC2645 family, which includes 10-bit and 8-bit variants. The 'H' suffix specifies the automotive temperature grade (-40°C to 125°C), while 'L12' defines the 12-bit resolution with a 2.5V internal reference. It shares the same pinout and core architecture as other resolutions in the series.

Digital To Analog Converters Replacement Considerations

Direct substitutes within the same family include LTC2645IMS-L10#PBF (10-bit) and LTC2645IMS-L8#PBF (8-bit). These offer identical pinouts and functionality but with lower resolution. Cross-family replacements require verification of interface compatibility and performance specifications.