LTC1403ACMSE#PBF

Analog To Digital Converters (ADC) Overview

The LTC1403ACMSE#PBF is a 14-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 active power dissipation of 12mW and features a Sleep shutdown mode reducing consumption to 10µW. The device includes an internal 2.5V bandgap reference and supports differential inputs with a 0V to 2.5V unipolar range. It guarantees operation within the commercial temperature range of 0°C to 70°C.

Analog To Digital Converters (ADC) Feature Summary

• 14-bit resolution with 2.8Msps sampling rate
• Single 3V supply operation with 12mW active power dissipation
• Internal 2.5V reference with Sleep (10µW) and Nap (3mW) modes
• Differential inputs with 80dB common mode rejection

Analog To Digital Converters (ADC) Applications

• Automotive systems
• Communications equipment
• Data acquisition systems
• Uninterrupted power supplies
• Multiphase motor control

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific ordering suffix #PBF indicates lead-free finish and tube packaging for this component. Confirm the 'A' grade designation corresponds to the 0°C to 70°C operating temperature range as specified in the manufacturer's order information table. Ensure compatibility with standard serial interfaces requiring 16 clock cycles for data output.

Analog To Digital Converters (ADC) Selection Notes

Select the LTC1403ACMSE#PBF when 14-bit accuracy is required alongside high-speed conversion at 2.8Msps. This part is suitable for portable applications due to its low power profile and tiny 10-lead MSOP package. Consider the internal 2.5V reference limitations; if higher precision or different voltage spans are needed, verify if external reference overdrive capabilities meet system requirements.

Analog To Digital Converters (ADC) Part Context

This component belongs to the LTC1403/LTC1403A family of serial ADCs. The 'A' suffix denotes the 14-bit variant, distinguishing it from the 12-bit LTC1403. The 'C' indicates the commercial temperature grade (0°C to 70°C), while 'I' and 'H' grades cover wider industrial and automotive ranges respectively. All variants share the same pinout and core architecture.

Analog To Digital Converters (ADC) Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. For equivalent performance, consider other members of the LTC1403 family such as the LTC1403CMSE#PBF (12-bit) or higher temperature grades like LTC1403IMSE#PBF, ensuring resolution and thermal specifications align with design needs.

Analog To Digital Converters (ADC) FAQ

What is the input voltage range for the LTC1403ACMSE#PBF?

The device accepts differential inputs with a unipolar voltage span of 0V to 2.5V. The absolute voltage swing for both AIN+ and AIN– extends from ground to the supply voltage (VDD).

How does the Sleep mode function affect power consumption?

The Sleep shutdown feature lowers power consumption to 10µW. Waking from Sleep mode requires one or more SCK pulses, and the internal reference settles in 2ms after the transition.

Can the internal reference be overridden?

Yes, the internal 2.5V reference can be overdriven by an external reference between 2.55V and VDD. An external reference at 2.55V will see a DC quiescent load of 0.75mA.