LTC2256IUJ-14

Analog To Digital Converters (ADC) Overview

The LTC2256IUJ-14#PBF is a 14-bit, 25Msps ultralow power analog-to-digital converter (ADC) from Analog Devices. It operates on a single 1.8V supply and features a pipeline architecture with selectable input ranges of 1VP-P to 2VP-P. Key electrical specifications include a typical Signal-to-Noise Ratio (SNR) of 71.8dB at 30MHz input, an Spurious Free Dynamic Range (SFDR) of 90dB, and a full-power bandwidth of 800MHz. The device dissipates approximately 35mW under sine wave input conditions. It supports CMOS, DDR CMOS, or DDR LVDS digital outputs and includes an internal reference voltage of 1.25V.

Analog To Digital Converters (ADC) Feature Summary

• 14-bit resolution with 25Msps sampling rate and 800MHz full-power bandwidth
• Ultralow power consumption of 35mW at 1.8V supply
• Selectable analog input ranges: 1VP-P to 2VP-P via SENSE pin
• Optional clock duty cycle stabilizer and data output randomizer

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 specific suffix #PBF indicates lead-free finish and tube packaging when sourcing. Confirm the 'I' grade designation corresponds to the -40°C to +85°C industrial temperature range required for the application environment. Cross-reference the manufacturer part number with authorized distributors to ensure authenticity and traceability.

Analog To Digital Converters (ADC) Selection Notes

Select this component over the LTC2257-14 or LTC2258-14 variants if the system design requires a maximum sampling rate of 25Msps rather than 40Msps or 65Msps. This variant offers the lowest power dissipation among the family. Ensure the digital interface requirements match the available CMOS or LVDS output modes supported by the device.

Analog To Digital Converters (ADC) Part Context

This part belongs to the LTC2256-14 series, which shares pin compatibility with the LTC2257-14 and LTC2258-14 models. All three variants utilize the same 40-lead (6mm × 6mm) QFN package. The primary distinction between these parts is the maximum sampling frequency, allowing designers to optimize power consumption based on bandwidth needs.

Analog To Digital Converters (ADC) Replacement Considerations

LTC2257IUJ-14#PBF (40Msps), LTC2258IUJ-14#PBF (65Msps). These are pin-compatible upgrades within the same family offering higher sampling rates.