LTC2257CUJ-14#TRPBF

Analog To Digital Converters (ADC) Overview

The LTC2257CUJ-14#TRPBF is a 14-bit, 40Msps ultralow power analog-to-digital converter (ADC) from Analog Devices Inc. It operates on a single 1.8V supply and features a pipeline architecture with differential or single-ended inputs. Key electrical specifications include a typical Signal-to-Noise Ratio (SNR) of 73dB, Spurious Free Dynamic Range (SFDR) of 90dB, and full-power bandwidth of 800MHz. Power dissipation is typically 52.1mW at 40Msps with a sine wave input. The device supports CMOS, DDR CMOS, or DDR LVDS digital outputs and includes an internal reference. It is housed in a 40-lead (6mm × 6mm) QFN package.

Analog To Digital Converters (ADC) Feature Summary

• 14-bit resolution with 40Msps sampling rate
• Ultralow power consumption: 52.1mW typical at 40Msps
• High dynamic performance: 73dB SNR and 90dB SFDR
• Selectable input ranges via SENSE pin (±0.5V to ±1V)
• Integrated internal voltage reference and common mode bias

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 ordering suffix #TRPBF indicates tape and reel packaging for automated assembly. Confirm the 'C' suffix denotes the commercial temperature range (0°C to 70°C). Ensure compatibility with the required digital output interface (CMOS/LVDS) before procurement.

Analog To Digital Converters (ADC) Selection Notes

Select this component for applications requiring high linearity with minimal power budget. Compare against LTC2258-14 for higher speed (65Msps) or LTC2256-14 for lower power (25Msps). Verify that the 40-Pin QFN package fits the PCB footprint and thermal requirements.

Analog To Digital Converters (ADC) Part Context

This part belongs to the LTC2257-14 series, which offers pin-compatible 12-bit versions (LTC2257-12) for different resolution needs. The '#TRPBF' designation specifies the lead-free tape and reel variant, distinct from the tube-packaged '#PBF' version.

Analog To Digital Converters (ADC) Replacement Considerations

Direct pin-compatible replacements within the same family include LTC2257IUJ-14#TRPBF (industrial temperature range) and LTC2257CUJ-12#TRPBF (12-bit resolution). Cross-family upgrades like LTC2258-14 offer higher speeds but may require layout adjustments.