LTC2267CUJ-12

Analog To Digital Converters (ADC) Overview

The LTC2267CUJ-12 is a dual-channel, simultaneous sampling analog-to-digital converter (ADC) from the LTC2267-14 family. It features a 14-bit resolution and operates at a maximum sampling rate of 105Msps. The device utilizes a pipeline architecture with serial LVDS outputs to minimize data line count. Key performance metrics include a Signal-to-Noise Ratio (SNR) of 73.1dB and a Spurious Free Dynamic Range (SFDR) of 88dB. It operates on a single 1.8V supply with total power dissipation of 243mW in 2-lane mode. The component is housed in a 40-pin QFN package.

Analog To Digital Converters (ADC) Feature Summary

• Dual-channel simultaneous sampling with 14-bit resolution
• Serial LVDS outputs supporting 1 or 2 bits per channel
• Ultralow jitter of 0.15ps RMS for excellent noise performance
• Internal clock duty cycle stabilizer for high performance

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 specific speed grade suffix when ordering. The 'C' indicates a commercial temperature range (0°C to 70°C), while 'I' denotes industrial range (-40°C to 85°C). Confirm that the required part number matches the 14-bit specification (LTC2267-14) rather than other variants in the series. Ensure the packaging type (Tube vs Tape & Reel) aligns with assembly requirements.

Analog To Digital Converters (ADC) Selection Notes

Select this model for applications requiring dual-channel synchronization at 105Msps with low power consumption. The internal reference is selected by connecting the SENSE pin to VDD. For external references, apply a voltage between 0.625V and 1.3V to the SENSE pin. Ensure the encode input supports the required logic levels (PECL, LVDS, TTL, or CMOS) or use the differential configuration.

Analog To Digital Converters (ADC) Part Context

This component belongs to the LTC2268-14/LTC2267-14/LTC2266-14 family, differentiated primarily by sampling speed. The LTC2267-14 provides a balance between the higher-speed LTC2268-14 (125Msps) and the lower-power LTC2266-14 (80Msps). All three share pin compatibility and similar architectural features, allowing for design flexibility across different bandwidth requirements.

Analog To Digital Converters (ADC) Replacement Considerations

Pin-compatible alternatives within the same family include the LTC2268-14 for higher speed and the LTC2266-14 for lower power. Single-channel versions like the LTC2257-12 are not direct replacements due to architectural differences. Verify that any substitute maintains the required 14-bit resolution and LVDS output interface.