LTC2171CUKG-12#PBF

Analog To Digital Converters (ADC) Overview

The LTC2171CUKG-12#PBF is a four-channel, simultaneous sampling 12-bit analog-to-digital converter (ADC) operating at a maximum sampling rate of 40Msps. It features an ultralow jitter of 0.15psRMS and delivers a typical Signal-to-Noise Ratio (SNR) of 71dB and Spurious Free Dynamic Range (SFDR) of 90dB. The device operates on a single 1.8V supply with a total power dissipation of 198mW. Digital outputs utilize serial LVDS to minimize data lines, supporting selectable input ranges from 1VP-P to 2VP-P. It includes internal reference capabilities, shutdown modes, and an SPI configuration port within a 52-pin QFN package.

Analog To Digital Converters (ADC) Feature Summary

• Four-channel simultaneous sampling architecture with 12-bit resolution
• Low power consumption: 198mW total (49.5mW per channel)
• High dynamic performance: 71dB SNR and 90dB SFDR
• Serial LVDS digital outputs with optional internal termination

Analog To Digital Converters (ADC) Applications

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

Analog To Digital Converters (ADC) Procurement Notes

Verify the 'C' suffix indicates a commercial temperature range of 0°C to 70°C. Confirm the '#PBF' designation ensures lead-free finish and RoHS compliance. Ensure the 52-lead QFN package dimensions match the PCB footprint requirements. Check for availability of the DC1525A-K demonstration circuit for evaluation purposes.

Analog To Digital Converters (ADC) Selection Notes

Select this model over the LTC2172 variant if a 40Msps sampling rate is sufficient, as it offers lower power consumption. Choose the 'I' suffix version if operation below 0°C is required. Verify that the 1.8V single-supply requirement aligns with the system power architecture. Consider the serial LVDS interface complexity versus parallel options when designing the digital back-end.

Analog To Digital Converters (ADC) Part Context

This component belongs to the LTC217x-12 family, which includes the LTC2170-12 (25Msps) and LTC2172-12 (65Msps). All variants share pin compatibility and architectural similarities, differing primarily in sampling speed and power dissipation. The LTC2171-12 provides a balance between the lower-speed LTC2170 and the higher-speed LTC2172.

Analog To Digital Converters (ADC) Replacement Considerations

LTC2172CUKG-12#PBF offers higher speed (65Msps) but increased power. LTC2170CUKG-12#PBF provides lower power (160mW) at reduced speed (25Msps). For industrial temperature ranges, substitute with the 'I' grade versions such as LTC2171IUKG-12#PBF.