LTC1403HMSE#PBF

Analog To Digital Converters (ADC) Overview

The LTC1403HMSE#PBF is a 12-bit, 2.8Msps serial analog-to-digital converter (ADC) from Analog Devices Inc., housed in a 10-lead MSOP package with an exposed ground pad. It operates on a single 3V supply, drawing 5.2mA during active conversion and consuming only 10µW in Sleep mode. The device features differential inputs supporting a 0V to 2.5V unipolar range and includes a 2.5V internal bandgap reference. Key performance metrics include a typical SINAD of 70.5dB at 1.4MHz input and 80dB common-mode rejection ratio. It supports a 3-wire serial interface and guarantees operation across the –40°C to 125°C temperature range.

Analog To Digital Converters (ADC) Feature Summary

• 12-bit resolution with 2.8Msps sampling rate
• Low power consumption: 14mW active, 10µW Sleep mode
• Differential inputs with 80dB CMRR
• Integrated 2.5V internal reference

Analog To Digital Converters (ADC) Applications

• Automotive systems
• Communications equipment
• Data acquisition systems
• Multiphase motor control
• Multiplexed data acquisition

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix #PBF indicates lead-free packaging compliant with RoHS standards. Confirm the 'H' grade designation ensures the extended industrial temperature range of –40°C to 125°C. Check for availability of the tape and reel option (#TRPBF) if automated surface-mount assembly is required instead of tube packaging.

Analog To Digital Converters (ADC) Selection Notes

Select this component when high-speed 12-bit conversion is needed within a tight power budget. The 2.8Msps rate allows full throughput with a 50.4MHz clock if acquisition time is managed. Ensure the driving source impedance is low enough to meet the 39ns acquisition requirement or use a buffer amplifier. Verify that the 0V to 2.5V input span matches the signal requirements.

Analog To Digital Converters (ADC) Part Context

This part belongs to the LTC1403 family, which also includes the 14-bit LTC1403A variant. The HMSE#PBF designation specifies the H-grade temperature range and MSOP-10 plastic package. Other variants like IMSE cover –40°C to 85°C, while CMSE covers 0°C to 70°C. The exposed pad must be soldered to the PCB ground plane for thermal and electrical performance.

Analog To Digital Converters (ADC) Replacement Considerations

The LTC1403AHMSE#PBF serves as a direct functional replacement offering 14-bit resolution instead of 12-bit, maintaining the same pinout and package. Users should verify that the increased resolution meets system noise requirements and that the slightly different offset/gain error specifications are acceptable.