LTC1403IMSE-1#PBF

Analog To Digital Converters (ADC) Overview

The LTC1403IMSE-1#PBF is a 12-bit, 2.8Msps serial analog-to-digital converter (ADC) from Analog Devices Inc., housed in a 10-lead MSOP package. It operates on a single 3V supply with a typical active power dissipation of 12mW and features an internal 2.5V bandgap reference. The device supports differential, pseudo-differential, or single-ended inputs within a ±1.25V bipolar range and includes Sleep (10µW) and Nap (3mW) shutdown modes. Key electrical specifications include a maximum integral nonlinearity (INL) of 0.5 LSB, a signal-to-noise plus distortion ratio (SINAD) of 70.5 dB at 100kHz input, and a spurious-free dynamic range (SFDR) of 87 dB.

Analog To Digital Converters (ADC) Feature Summary

• 12-bit resolution with a sampling rate up to 2.8Msps using a 3-wire serial interface
• Differential input architecture providing 80dB common mode rejection at 1MHz
• Integrated 2.5V internal reference that can be overdriven by external sources between 2.55V and VDD
• Ultra-low power consumption with 10µW Sleep mode and 3mW Nap mode capabilities

Analog To Digital Converters (ADC) Applications

• Data acquisition systems requiring high-speed conversion
• Multiphase motor control applications
• Uninterrupted power supplies (UPS)
• Portable communications equipment

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix #PBF indicates lead-free packaging compliant with RoHS standards. Confirm the 'I' designation corresponds to the industrial temperature range of -40°C to +85°C. Ensure the ordering part number matches the exact resolution variant required, as this specific part is the 12-bit version distinct from the 14-bit LTC1403A-1.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a balance of speed and low power is critical for portable designs. The 12-bit resolution offers a 610µV LSB size, suitable for applications not requiring the finer granularity of the 14-bit variant. Consider the 50.4MHz clock requirement if aiming for the full 2.8Msps throughput rate with minimal acquisition time overhead.

Analog To Digital Converters (ADC) Part Context

This part belongs to the LTC1403 family of serial sampling ADCs. The IMSE-1 suffix identifies the industrial grade (-40°C to 85°C), MSOP-10 package, and 12-bit resolution variant. It shares the same pinout and core architecture as the 14-bit LTC1403A-1 but differs in linearity specifications and output word length.

Analog To Digital Converters (ADC) Replacement Considerations

The 14-bit variant LTC1403AIMSE-1#PBF serves as a higher-resolution alternative within the same package. For legacy replacements, verify compatibility with existing serial interfaces, as both variants utilize identical 3-wire timing protocols.