LTC2644IMS-L10#TRPBF

Overview

The LTC2644IMS-L10#TRPBF is a dual-channel, 10-bit PWM-to-voltage digital-to-analog converter (DAC) from Analog Devices. It features an integrated 10ppm/°C reference providing a 2.5V full-scale output and operates on a single 2.7V to 5.5V supply. The device converts PWM input signals into stable analog voltages with rail-to-rail output buffers capable of sourcing/sinking up to 10mA at 5V. Key electrical parameters include a typical settling time of 7.4µs for 10-bit accuracy, ±1 LSB maximum DNL, and ±2.5 LSB maximum INL. It supports pin-selectable internal or external references and enters a configurable idle state after 60ms of inactivity.

Feature Summary

• Dual 10-bit PWM-to-VOUT DACs with integrated 10ppm/°C reference
• Rail-to-rail output buffers with 10mA drive capability at 5V
• Pin-selectable idle mode states: zero-scale, full-scale, hold, or power-down
• Low power consumption: 2.7mA at 3V, <1µA in power-down mode

Applications

• Digital calibration systems
• Trimming and adjustment circuits
• Level setting applications
• Process control and industrial automation
• Automotive instrumentation

Procurement Notes

Verify the suffix #TRPBF indicates a tape and reel packaging format containing 2,500 pieces. Confirm the IMS designation corresponds to the 12-lead MSOP package and the I temperature grade covers the -40°C to 85°C operating range. Ensure compatibility with IOVCC levels between 1.71V and 5.5V for logic interface requirements.

Selection Notes

Select this model for applications requiring direct PWM input conversion without external filtering components. The 10-bit resolution offers a balance between precision and speed, with a maximum PWM input frequency of 25kHz. Choose the H-grade variant if operation above 85°C up to 125°C is required. Verify that the load current does not exceed 10mA sourcing or sinking limits at 5V supply.

Part Context

This component belongs to the LTC2644 family, which includes 12-bit and 8-bit variants (LTC2644-L12 and LTC2644-L8). All variants share the same 12-lead MSOP package and functional architecture but differ in linearity specifications and maximum PWM input frequencies. The L10 variant specifically targets mid-range precision needs with ±1 LSB DNL.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.