LTC2644HMS-L12#TRPBF

Overview

The LTC2644HMS-L12#TRPBF is a dual 12-bit PWM-to-voltage output DAC from Analog Devices, housed in a 12-lead MSOP package. It features an integrated 10ppm/°C reference providing a 2.5V full-scale output. The device converts PWM input signals into accurate analog voltages with no latency, updating outputs within 8µs typically. It supports single-supply operation from 2.7V to 5.5V and includes pin-selectable internal or external reference modes. Key electrical parameters include ±2.5LSB maximum INL, ±1LSB maximum DNL, and rail-to-rail output buffers capable of sourcing/sinking up to 10mA at 5V.

Feature Summary

• Dual 12-bit resolution with ±2.5LSB max INL and ±1LSB max DNL
• Integrated 10ppm/°C reference for 2.5V full-scale output
• No latency PWM-to-voltage conversion with <8µs settling time
• Pin-selectable idle states (Zero-Scale, Full-Scale, Hold, Power-Down)

Applications

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

Procurement Notes

Verify the suffix #TRPBF indicates a 2,500-piece tape and reel packaging format. Confirm the L12 designation corresponds to 12-bit resolution and 2.5V internal reference full-scale voltage. Ensure the HMS package type matches the required 12-lead MSOP footprint for PCB design compatibility.

Selection Notes

Select this part for applications requiring direct PWM-to-analog conversion without external filters or buffer amplifiers. The 12-bit resolution is suitable for high-precision calibration tasks. Consider the H-grade temperature range (-40°C to 125°C) for automotive or industrial environments. Verify that the PWM input frequency does not exceed 6.25kHz for guaranteed 12-bit accuracy.

Part Context

This component belongs to the LTC2644 family, which also offers 10-bit (L10) and 8-bit (L8) resolutions. The 'H' suffix denotes the automotive temperature grade (-40°C to 125°C), while 'MS' specifies the 12-lead MSOP package. The '#TRPBF' suffix confirms lead-free construction and tape-and-reel delivery.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should verify pinout and electrical parameter compatibility if considering alternative manufacturers.