LTC2256IUJ-14#PBF

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 an 800MHz full-power bandwidth sample-and-hold circuit. Key electrical specifications include a typical Signal-to-Noise Ratio (SNR) of 71.8dB at 25Msps, Spurious Free Dynamic Range (SFDR) of 90dB, Integral Nonlinearity (INL) of ±1 LSB, and Differential Nonlineity (DNL) of ±0.3 LSB. The device dissipates approximately 35mW of power and supports selectable input ranges via the SENSE pin.

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 analog supply
• Flexible digital output options including Full-Rate CMOS, Double Data Rate CMOS, and DDR LVDS
• Integrated internal reference or external reference capability via SENSE pin

Analog To Digital Converters (ADC) Applications

• Cellular Base Stations
• Software Defined Radios
• Portable Medical Imaging
• Multi-Channel Data Acquisition
• Nondestructive Testing

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix #PBF indicates lead-free packaging compliant with RoHS standards. Confirm the 'I' grade designation corresponds to the industrial temperature range of -40°C to +85°C. Ensure the QFN-40 package dimensions match the PCB footprint requirements before procurement.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a 14-bit resolution and 25Msps speed are required with minimal power budget. Compare against LTC2257-14 for higher 40Msps performance or LTC2258-14 for 65Msps if power constraints allow. Verify that the 1.8V supply voltage aligns with the system design and check if the available output interface modes meet the downstream logic requirements.

Analog To Digital Converters (ADC) Part Context

This part belongs to the LTC2256/57/58-14 family of ultralow power 1.8V ADCs. It shares the same 40-pin QFN package and core architecture as the LTC2257-14 and LTC2258-14, differing primarily in maximum sampling frequency. The family is designed for digitizing high-frequency, wide dynamic range signals in communications applications.

Analog To Digital Converters (ADC) Replacement Considerations

Pin-compatible alternatives within the same series include the LTC2257IUJ-14#PBF (40Msps) and LTC2258IUJ-14#PBF (65Msps). These offer higher speeds but consume more power. Lower-speed variants like the LTC2256IUJ-12#PBF (12-bit) are not pin-compatible due to different output configurations.