LTC2644HMS-L10#TRPBF

Overview

The LTC2644HMS-L10#TRPBF is a dual 10-bit PWM-to-voltage output DAC featuring an integrated 10ppm/°C reference. It converts PWM input signals into stable analog voltages with rail-to-rail outputs, settling to 10-bit accuracy within 7.4µs typically. The device operates from a single 2.7V to 5.5V supply and supports PWM frequencies up to 25kHz for 10-bit resolution. Key specifications include ±1LSB maximum DNL, ±1LSB maximum INL, and a gain error of ±0.8% FSR. It consumes 4.6mA at 5V and offers pin-selectable internal or external reference modes.

Feature Summary

• Dual-channel 10-bit resolution with no latency PWM-to-voltage conversion
• Integrated 10ppm/°C precision reference providing 2.5V full-scale output
• Rail-to-rail output buffers capable of sourcing/sinking up to 10mA (5V)
• Pin-selectable idle states including hold, zero-scale, full-scale, 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 specific suffix #TRPBF indicates a tape and reel packaging format containing 2,500 pieces. Confirm the temperature grade 'H' corresponds to the automotive range of –40°C to 125°C. Ensure the ordering suffix 'L10' matches the required 10-bit resolution and 2.5V internal reference full-scale voltage configuration.

Selection Notes

Select this component when low-latency conversion from PWM signals to analog voltage is required without external filters. The LTC2644HMS-L10 is suitable for designs needing 10-bit accuracy with a 2.5V full-scale range. Consider the 12-lead MSOP package constraints and the need for a 0.1µF bypass capacitor on the REF pin if using the internal reference mode.

Part Context

This part belongs to the LTC2644 family, which includes 12-bit and 8-bit variants. The 'H' designation specifies the extended temperature range suitable for automotive environments. The 'L10' suffix identifies the 10-bit resolution version with a 2.5V full-scale output derived from the internal reference.

Replacement Considerations

Direct functional replacements within the same family include the LTC2644HMS-L12#TRPBF for 12-bit resolution or the LTC2644HMS-L8#TRPBF for 8-bit resolution, provided the pinout and package remain compatible.