LTC2141CUP-12

Analog To Digital Converters (ADC) Overview

The LTC2141CUP-12 is a dual-channel, simultaneous sampling analog-to-digital converter (ADC) from Analog Devices Inc. It features a 12-bit resolution and operates at a maximum sampling rate of 40 Msps. The device utilizes a pipelined architecture with differential voltage inputs and supports parallel digital interfaces. Key electrical specifications include a typical signal-to-noise ratio (SNR) of 73.2 dBFS and a spurious-free dynamic range (SFDR) of 90 dBFS. It functions on a single 1.8V supply with power dissipation of approximately 67mW per channel. The component is housed in a 64-lead, 9mm × 9mm plastic QFN package.

Analog To Digital Converters (ADC) Feature Summary

• Dual-channel simultaneous sampling ADC with 12-bit resolution
• Maximum sampling rate of 40 Msps with ultralow jitter (0.08ps RMS)
• High dynamic range performance: 73.2dB SNR and 90dB SFDR
• Single 1.8V supply operation with selectable input ranges (1V to 2V p-p)

Analog To Digital Converters (ADC) Applications

• Communications systems
• Cellular base stations
• Software defined radios
• Portable medical imaging
• Multi-channel data acquisition

Analog To Digital Converters (ADC) Procurement Notes

Verify the part marking 'LTC2141UP-12' against the shipping container label to confirm the temperature grade. The 'C' suffix indicates an operating range of 0°C to 70°C, while 'I' denotes -40°C to 85°C. Ensure the order specifies the correct lead finish and packaging format (tube or tape and reel) as listed in the manufacturer's ordering information table.

Analog To Digital Converters (ADC) Selection Notes

Select this model for applications requiring high linearity and low power consumption at moderate speeds. Compare against the LTC2142-12 for higher 65 Msps throughput or the LTC2140-12 for lower 25 Msps requirements. Consider the output interface options (CMOS vs LVDS) based on system noise immunity needs and verify that the 1.8V supply constraints align with the design environment.

Analog To Digital Converters (ADC) Part Context

This component belongs to the LTC214x-14 family of low-power dual ADCs, which also includes 14-bit variants (LTC2142-14/LTC2141-14/LTC2140-14). While the datasheet primarily details the 14-bit versions, the 12-bit variant shares the same physical package, pinout, and core architecture. The 'CUP-12' designation specifically identifies the commercial temperature grade, QFN package, and 12-bit resolution configuration within this product line.

Analog To Digital Converters (ADC) Replacement Considerations

Direct functional substitutes within the same family include the LTC2141IUP-12#TRPBF for industrial temperature range (-40°C to 85°C) or the LTC2141CUP-12#PBF for tube packaging. For higher speed requirements, the LTC2142-12 series offers 65 Msps operation. Lower speed alternatives include the LTC2140-12 series operating at 25 Msps.