LTC2257IUJ-12#PBF

Analog To Digital Converters (ADC) Overview

The LTC2257IUJ-12#PBF is a 12-bit, 40Msps ultralow power analog-to-digital converter (ADC) from Analog Devices. It operates on a single 1.8V supply and features a pipeline architecture with an 800MHz full-power bandwidth sample-and-hold circuit. Key electrical specifications include a typical Signal-to-Noise Ratio (SNR) of 70.8dB, a Spurious Free Dynamic Range (SFDR) of 90dB, and a power dissipation of 47mW at 40Msps. The device offers selectable input ranges of 1VP-P to 2VP-P and supports CMOS, DDR CMOS, or DDR LVDS digital output interfaces.

Analog To Digital Converters (ADC) Feature Summary

• Ultralow power consumption of 47mW at 40Msps sampling rate
• High dynamic performance with 70.8dB SNR and 90dB SFDR
• Flexible digital outputs: Full-rate CMOS, Double Data Rate CMOS, or DDR LVDS
• Integrated internal reference with selectable input voltage ranges

Analog To Digital Converters (ADC) Applications

• Cellular base stations
• Software defined radios
• Portable medical imaging
• Multi-channel data acquisition systems
• Nondestructive testing equipment

Analog To Digital Converters (ADC) Procurement Notes

Verify the component authenticity by checking for the 'LTC2257UJ-12' part marking on the package. Confirm the suffix '#PBF' indicates lead-free finish and RoHS compliance. Ensure the operating temperature range matches the 'I' grade specification (-40°C to 85°C). Cross-reference the manufacturer part number with official Analog Devices documentation to avoid counterfeit components.

Analog To Digital Converters (ADC) Selection Notes

Select the LTC2257IUJ-12#PBF when a balance between low power consumption and high-speed digitization is required. Choose this model over the LTC2258-12 if lower power is prioritized over higher sampling rates, or over the LTC2256-12 if higher speed than 25Msps is needed. Ensure the system design accommodates the specific digital interface requirements (CMOS vs LVDS) and the 40-pin QFN thermal management needs.

Analog To Digital Converters (ADC) Part Context

This component belongs to the LTC2258-12 family of 12-bit ADCs, which includes the LTC2258-12 (65Msps) and LTC2256-12 (25Msps). All variants share pin compatibility and architectural similarities, differing primarily in sampling speed and power consumption. The 'IUJ' designation specifies the industrial temperature range and the 40-lead QFN package format.

Analog To Digital Converters (ADC) Replacement Considerations

Pin-compatible alternatives within the same family include the LTC2258IUJ-12#PBF for higher speed applications and the LTC2256IUJ-12#PBF for lower power requirements. Verify that the replacement part's sampling rate and power dissipation meet the specific system constraints.