LTC2268CUJ-14

Analog To Digital Converters (ADC) Overview

The LTC2268CUJ-14#PBF is a dual-channel, simultaneous sampling 14-bit analog-to-digital converter (ADC) operating at a maximum sampling rate of 125Msps. It features an ultralow jitter of 0.15ps RMS and delivers a signal-to-noise ratio (SNR) of 73.1dB with an 88dB spurious-free dynamic range (SFDR). The device operates on a single 1.8V supply, consuming 299mW total power. Digital outputs utilize serial LVDS with selectable 1-lane or 2-lane modes. It includes an internal reference, shutdown/nap modes, and an SPI configuration port.

Analog To Digital Converters (ADC) Feature Summary

• Dual-channel simultaneous sampling with 14-bit resolution
• 125Msps sampling rate with 0.15ps RMS jitter
• 73.1dB SNR and 88dB SFDR performance
• Serial LVDS outputs with adjustable current and optional termination

Analog To Digital Converters (ADC) Applications

• Communications systems
• Cellular base stations
• Software defined radios
• Portable medical imaging
• Multichannel data acquisition

Analog To Digital Converters (ADC) Procurement Notes

Verify the ordering suffix #PBF indicates lead-free finish and tube packaging for the commercial grade (C) variant. Confirm the temperature range is 0°C to 70°C. Ensure the specific speed grade matches the required sampling frequency, as other variants in the family operate at lower rates.

Analog To Digital Converters (ADC) Selection Notes

Select this part for high-speed dual-channel applications requiring low power consumption. Compare against LTC2267-14 (105Msps) and LTC2266-14 (80Msps) if lower sampling rates suffice. Verify input range requirements, as the SENSE pin configures the full-scale input voltage between 1VP-P and 2VP-P.

Analog To Digital Converters (ADC) Part Context

This component belongs to the LTC226x-14 family of low-power dual ADCs. It shares the same 40-lead QFN package and pinout with the LTC2267-14 and LTC2266-14, which offer reduced sampling speeds. The 'C' suffix denotes the commercial temperature range, while 'I' denotes industrial range.

Analog To Digital Converters (ADC) Replacement Considerations

LTC2267CUJ-14#PBF offers identical functionality at 105Msps. LTC2266CUJ-14#PBF operates at 80Msps. For higher resolution, consider the LTC2268-16 series. Pin-compatible 12-bit versions are available but have different electrical characteristics.