LTC2268CUJ-12#PBF

Analog To Digital Converters (ADC) Overview

The LTC2268CUJ-12#PBF is a dual-channel, simultaneous sampling 12-bit analog-to-digital converter (ADC) from Analog Devices. Operating at a maximum sampling rate of 125Msps with a single 1.8V supply, it delivers a typical Signal-to-Noise Ratio (SNR) of 70.6dB and an Spurious Free Dynamic Range (SFDR) of 88dB. The device features ultralow jitter of 0.15ps RMS, ±0.3LSB Integral Nonlinearity (INL), and ±0.1LSB Differential Nonlinearity (DNL). It utilizes serial LVDS outputs for data transmission and includes an internal reference voltage of 1.25V. Total power dissipation is 292mW in 2-lane mode.

Analog To Digital Converters (ADC) Feature Summary

• Dual-channel simultaneous sampling architecture with 125Msps throughput
• High dynamic range performance: 70.6dB SNR and 88dB SFDR
• Low power consumption: 292mW total (146mW per channel)
• Serial LVDS digital outputs with selectable 1 or 2 bits per channel
• Internal 1.25V reference with selectable input ranges via SENSE pin

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 'C' suffix indicates the commercial temperature range (0°C to 70°C) rather than the industrial grade ('I'). Confirm the '#PBF' designation ensures lead-free compliance and tube packaging. Cross-reference the specific speed grade (125Msps) against system requirements, as lower-speed variants exist within the same package family.

Analog To Digital Converters (ADC) Selection Notes

Select this component when dual-channel simultaneous sampling is required at high speeds. Ensure the 1.8V supply voltage matches the design constraints. Consider the 125Msps limit if higher bandwidth is needed, or opt for the LTC2267/2266 series for lower power at reduced speeds. Verify that the serial LVDS output interface is compatible with the downstream FPGA or processor logic levels.

Analog To Digital Converters (ADC) Part Context

This part belongs to the LTC2268-12/LTC2267-12/LTC2266-12 family of low-power dual ADCs. It shares the same 40-lead QFN package and pinout with the LTC2267 (105Msps) and LTC2266 (80Msps) variants, allowing for pin-compatible design flexibility across different speed grades.

Analog To Digital Converters (ADC) Replacement Considerations

The LTC2267IUJ-12#PBF and LTC2266IUJ-12#PBF are pin-compatible alternatives offering lower sampling rates (105Msps and 80Msps respectively) with potentially lower power consumption.