LTC1403IMSE-1#TRPBF

Analog To Digital Converters (ADC) Overview

The LTC1403IMSE-1#TRPBF 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 pad. It operates on a single 3V supply and features a SAR architecture with differential inputs supporting a ±1.25V bipolar range. Key electrical parameters include a typical power dissipation of 14mW in active mode, a 2.5V internal bandgap reference, and a 3-wire serial interface. The device offers low-power shutdown modes: Nap (3mW) and Sleep (10µW).

Analog To Digital Converters (ADC) Feature Summary

• 12-bit resolution with a maximum sampling rate of 2.8Msps.
• Differential analog inputs with ±1.25V input range and 80dB common mode rejection.
• Integrated 2.5V internal reference that can be overdriven by external sources.
• Three-state serial output compatible with standard SPI interfaces.

Analog To Digital Converters (ADC) Applications

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

Analog To Digital Converters (ADC) Procurement Notes

Verify the #TRPBF suffix indicates tape and reel packaging for automated assembly. Confirm the IMSE suffix corresponds to the industrial temperature range (-40°C to 85°C). Ensure the exposed pad (Pin 11) is soldered to the PCB ground plane for proper thermal management and electrical grounding as specified in the datasheet.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a 12-bit resolution is sufficient for the application, offering lower power consumption compared to the 14-bit LTC1403A-1 variant. The IMSE package provides a compact footprint suitable for space-constrained designs. Verify that the system clock frequency supports the required throughput, noting that full 2.8Msps rates require specific timing constraints between CONV and SCK signals.

Analog To Digital Converters (ADC) Part Context

This part belongs to the LTC1403 family of serial sampling ADCs. The 'I' designation specifies the industrial temperature grade, while 'MSE' denotes the 10-lead MSOP plastic package. The '#TRPBF' suffix confirms lead-free finish and tape-and-reel shipping format, distinguishing it from tube-packaged variants like the #PBF suffix.

Analog To Digital Converters (ADC) Replacement Considerations

The LTC1403A-1#TRPBF serves as a direct pin-compatible alternative offering 14-bit resolution instead of 12-bit. Designers should verify if the increased resolution meets noise requirements without exceeding power budgets or altering signal conditioning needs due to the different LSB size.