LTC2174CUKG-14

Analog To Digital Converters (ADC) Overview

The LTC2174CUKG-14 is a 14-bit, 4-channel simultaneous sampling analog-to-digital converter (ADC) operating at a maximum sampling rate of 105Msps. It features serial LVDS outputs with selectable 1-lane or 2-lane modes and supports input ranges from 1Vp-p to 2Vp-p. The device operates on a single 1.8V supply, consuming 450mW total power. Key performance metrics include a typical Signal-to-Noise Ratio (SNR) of 73dB and an Spurious Free Dynamic Range (SFDR) of 88dB. It integrates an internal reference and clock duty cycle stabilizer within a 52-pin QFN package.

Analog To Digital Converters (ADC) Feature Summary

• Four-channel simultaneous sampling architecture with 14-bit resolution
• Serial LVDS digital outputs supporting 1-bit or 2-bit per channel modes
• Internal 1.25V reference with selectable input ranges via SENSE pin
• Low jitter sample-and-hold acquisition (0.15ps RMS)

Analog To Digital Converters (ADC) Applications

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

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific speed grade matches the application requirements, as the LTC2174-14 is rated for 105Msps compared to the 125Msps LTC2175-14. Confirm the 'C' suffix indicates the commercial temperature range of 0°C to 70°C. Ensure the '#PBF' designation aligns with lead-free RoHS compliance standards required by the target assembly process.

Analog To Digital Converters (ADC) Selection Notes

Select this component when four synchronized channels are required at speeds up to 105Msps. The 105Msps speed grade offers lower power consumption (450mW) than the 125Msps variant. Verify that the system clock duty cycle stabilizer accommodates the available clock source characteristics without external conditioning.

Analog To Digital Converters (ADC) Part Context

This part belongs to the LTC217x-14 family, which includes the LTC2175-14 (125Msps), LTC2174-14 (105Msps), and LTC2173-14 (80Msps). All variants share identical pinouts and functionality, differing only in maximum sampling frequency and associated power dissipation levels. The CU suffix denotes the commercial temperature range.

Analog To Digital Converters (ADC) Replacement Considerations

The LTC2175CUKG-14#PBF serves as a higher-speed alternative within the same package. The LTC2173CUKG-14#PBF provides a lower-power option for reduced bandwidth needs. Pin compatibility allows for direct substitution among these three speed grades.