LTC2271CUKG#PBF

Analog To Digital Converters (ADC) Overview

The LTC2271CUKG#PBF is a dual-channel, simultaneous sampling 16-bit analog-to-digital converter (ADC) designed for high-frequency and wide dynamic range signal digitization. Operating at a maximum sampling rate of 20Msps with a single 1.8V supply, it delivers an 84.1dB Signal-to-Noise Ratio (SNR) and 99dB Spurious Free Dynamic Range (SFDR). The device features serial LVDS outputs configurable for 1, 2, or 4 bits per channel to minimize data lines. It includes selectable input ranges from 1V P-P to 2.1V P-P, an internal clock duty cycle stabilizer, and low power consumption of 185mW total. The component is housed in a 52-lead 7mm × 8mm QFN package.

Analog To Digital Converters (ADC) Feature Summary

• Dual-channel simultaneous sampling architecture with 16-bit resolution and no missing codes.
• Serial LVDS digital outputs supporting 1-lane, 2-lane, or 4-lane modes for flexible interface integration.
• High dynamic performance including 84.1dB SNR and 99dB SFDR at 20Msps.
• Integrated clock duty cycle stabilizer ensuring high performance across various clock duty cycles.

Analog To Digital Converters (ADC) Applications

• Low Power Instrumentation
• Software-Defined Radios
• Portable Medical Imaging
• Multi-Channel Data Acquisition

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific ordering suffix against the manufacturer's documentation to confirm lead-free finish and tape-and-reel packaging specifications. Ensure the operating temperature range requirements align with the 'C' grade designation (0°C to 70°C). Cross-reference pin configurations and absolute maximum ratings during procurement validation to prevent compatibility issues with existing system designs.

Analog To Digital Converters (ADC) Selection Notes

Select this component when simultaneous dual-channel conversion is required within a low-power constraint. The 1.8V single-supply operation simplifies power management compared to dual-supply alternatives. Consider the serial LVDS output configuration to reduce PCB trace count and crosstalk in high-density layouts. Verify that the input drive circuitry can support the specified common mode voltage and differential input range requirements.

Analog To Digital Converters (ADC) Part Context

This part belongs to the LTC2271 family of low-noise, high-speed ADCs manufactured by Analog Devices Inc. It is pin-compatible with the LTC2190, which offers a higher sampling rate of 25Msps but different power characteristics. The device utilizes a 52-lead plastic QFN package, distinguishing it from larger footprint converters in the broader data acquisition portfolio.

Analog To Digital Converters (ADC) Replacement Considerations

The LTC2190 is a pin-compatible alternative offering 25Msps sampling speed. Evaluate power dissipation differences and bandwidth requirements when substituting. No other direct cross-model replacements are confirmed in the provided documentation.