LTC2242CUP-10

Analog To Digital Converters (ADC) Overview

The LTC2242CUP-10 is a 10-bit, 250Msps analog-to-digital converter (ADC) designed for digitizing high-frequency signals. It operates on a single 2.5V supply with a typical power dissipation of 740mW in CMOS mode. Key AC performance metrics include a Signal-to-Noise Ratio (SNR) of 60.5dB and a Spurious Free Dynamic Range (SFDR) of 78dB at a 70MHz input frequency. The device features ultralow jitter of 95fs RMS, enabling effective IF undersampling. DC specifications provide ±0.4LSB Integral Nonlinearity (INL) and ±0.2LSB Differential Nonlinearity (DNL), ensuring no missing codes across the operating temperature range.

Analog To Digital Converters (ADC) Feature Summary

• High-speed sampling rate of 250Msps with 10-bit resolution
• Ultralow aperture delay jitter of 95fs RMS for superior noise performance
• Flexible digital output options including full-rate CMOS, demultiplexed CMOS, and LVDS
• Selectable analog input ranges of ±0.5V or ±1V via the SENSE pin

Analog To Digital Converters (ADC) Applications

• Wireless and wired broadband communication systems
• Cable head-end systems
• Power amplifier linearization
• Communications test equipment

Analog To Digital Converters (ADC) Procurement Notes

Verify the ordering suffix to confirm the specific package type and temperature grade. The 'C' designation indicates an operating temperature range of 0°C to 70°C, while 'I' denotes -40°C to 85°C. Confirm whether the part is supplied in a tube or tape and reel format based on the '#PBF' or '#TRPBF' suffix. Ensure compatibility with the required voltage levels and interface standards before procurement.

Analog To Digital Converters (ADC) Selection Notes

Select this component when high dynamic range and low jitter are critical for wideband signal acquisition. The choice between CMOS and LVDS outputs depends on the receiver's interface requirements and board layout constraints. Consider the SENSE pin configuration to match the available reference voltage to the desired input range. Verify that the system clock duty cycle stabilizer is utilized if the driving clock source exhibits significant duty cycle distortion.

Analog To Digital Converters (ADC) Part Context

This device belongs to the LTC2242 family of high-performance ADCs. It shares pin compatibility with other variants in the series, such as the 12-bit LTC2242-12 and the lower-speed LTC2240-10/12 and LTC2241-10/12 models. This allows for design flexibility and potential future upgrades within the same hardware footprint without requiring PCB redesign.

Analog To Digital Converters (ADC) Replacement Considerations

Direct pin-compatible replacements within the same package include the LTC2242-12 for higher resolution or the LTC2240-10/12 and LTC2241-10/12 for lower sampling rates. When substituting, verify that the power consumption and thermal characteristics of the alternative model fit within the system's thermal budget.