LTC2255IUH

Analog To Digital Converters (ADC) Overview

The LTC2255IUH is a 14-bit, 125Msps low-power analog-to-digital converter (ADC) manufactured by Analog Devices Inc. It operates on a single 3V supply (2.85V to 3.4V) and dissipates 395mW at full speed. The device features a pipelined architecture with a flexible input range of 1VP-P to 2VP-P and a 640MHz full power bandwidth sample-and-hold circuit. Key performance metrics include a typical Signal-to-Noise Ratio (SNR) of 72.4dB and an Spurious Free Dynamic Range (SFDR) of 88dB. It utilizes a 32-pin QFN package.

Analog To Digital Converters (ADC) Feature Summary

• 14-bit resolution with 125Msps sampling rate
• Single 3V supply operation (2.85V to 3.4V)
• Low power consumption of 395mW at 125Msps
• Integrated clock duty cycle stabilizer

Analog To Digital Converters (ADC) Applications

• Wireless and wired broadband communication systems
• Imaging systems requiring high dynamic range
• Ultrasound medical equipment
• Spectral analysis instruments
• Portable instrumentation devices

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'IUH' corresponds to the industrial temperature grade (-40°C to 85°C) and the 32-QFN package type. Confirm lead-free status if '#PBF' is required for compliance. Ensure the ordering suffix matches the exact pinout and thermal characteristics defined in the official datasheet.

Analog To Digital Converters (ADC) Selection Notes

Select the LTC2255IUH when a 125Msps sampling rate is required. For lower speed applications, consider the pin-compatible LTC2254 (105Msps), LTC2249 (80Msps), or other family members. Ensure the analog input drive circuitry can support the specified 1VP-P to 2VP-P range and that the output logic voltage aligns with the OVDD supply capabilities.

Analog To Digital Converters (ADC) Part Context

This component belongs to the LTC225x/LTC224x family of low-power 3V ADCs. It shares pin compatibility with variants offering different sampling rates and resolutions, such as the 12-bit LTC2253 and the 105Msps LTC2254. This allows for design flexibility across different bandwidth requirements within the same footprint.

Analog To Digital Converters (ADC) Replacement Considerations

Direct pin-compatible substitutes within the same family include the LTC2254 (105Msps), LTC2253 (12-bit, 125Msps), and LTC2249 (14-bit, 80Msps). Verify that the alternative part's sampling rate and resolution meet the system specifications before substitution.