LTC2258IUJ-12

Analog To Digital Converters (ADC) Overview

The LTC2258IUJ-12 is a 12-bit, 65Msps ultralow power analog-to-digital converter (ADC) from Analog Devices. It operates on a single 1.8V supply and features a pipeline architecture with an 800MHz full-power bandwidth sample-and-hold circuit. Key electrical specifications include a typical Signal-to-Noise Ratio (SNR) of 71.1dB, Spurious Free Dynamic Range (SFDR) of 88dB, Integral Nonlinearity (INL) of ±0.3LSB, and Differential Nonlineity (DNL) of ±0.1LSB. Power dissipation is typically 79mW at full speed. The device supports CMOS, DDR CMOS, or DDR LVDS digital outputs and includes an internal reference.

Analog To Digital Converters (ADC) Feature Summary

• Ultralow power consumption: 79mW at 65Msps
• High dynamic performance: 71.1dB SNR and 88dB SFDR
• Flexible digital interfaces: Full-rate CMOS, DDR CMOS, or DDR LVDS
• Integrated features: Internal reference, clock duty cycle stabilizer, and data output randomizer

Analog To Digital Converters (ADC) Applications

• Cellular Base Stations
• Software Defined Radios
• Portable Medical Imaging
• Multi-Channel Data Acquisition
• Nondestructive Testing

Analog To Digital Converters (ADC) Procurement Notes

Verify the operating temperature range for the specific suffix; 'I' denotes -40°C to 85°C. Confirm the package type is the 40-lead (6mm × 6mm) Plastic QFN. Ensure the order number matches the required lead finish (PBF for lead-free). Check for availability in tape and reel versus tube packaging if high-volume production is intended.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a 12-bit resolution and up to 65Msps sampling rate are required with minimal power budget. Compare against LTC2257-12 (40Msps) or LTC2256-12 (25Msps) if lower speeds suffice. Consider the digital output interface requirements (CMOS vs LVDS) and whether the optional clock duty cycle stabilizer is needed for the specific clock source characteristics.

Analog To Digital Converters (ADC) Part Context

This part belongs to the LTC2256/2257/2258-12 family of ultralow power 1.8V ADCs. These devices share pin compatibility and architectural similarities, differing primarily in maximum sampling rates (25Msps, 40Msps, and 65Msps respectively). They are designed for demanding communications applications requiring wide dynamic range signal digitization.

Analog To Digital Converters (ADC) Replacement Considerations

Pin-compatible alternatives within the same family include LTC2257IUJ-12#PBF (40Msps) and LTC2256IUJ-12#PBF (25Msps). For higher performance, consider the LTC2259 series. Verify that the replacement meets the specific sampling rate and power dissipation constraints of the design.