LTC2226CUH#PBF

Analog To Digital Converters (ADC) Overview

The LTC2226CUH#PBF is a 12-bit, 25Msps low-power analog-to-digital converter (ADC) from Analog Devices. It operates on a single 3V supply (2.7V to 3.4V) with typical power dissipation of 75mW. The device features a pipeline architecture with a 575MHz full-power bandwidth sample-and-hold circuit. Key performance metrics include a typical Signal-to-Noise Ratio (SNR) of 71.4dB and Spurious Free Dynamic Range (SFDR) of 90dB at the Nyquist frequency. It offers flexible input ranges selectable via the SENSE pin, an internal reference, and supports shutdown and nap modes for power management.

Analog To Digital Converters (ADC) Feature Summary

• 12-bit resolution with 25Msps sampling rate
• Low power consumption: 75mW typical at 3V supply
• High dynamic performance: 71.4dB SNR and 90dB SFDR
• Flexible analog input range: ±0.5V to ±1V selectable via SENSE pin
• Integrated clock duty cycle stabilizer for stable operation across varying duty cycles

Analog To Digital Converters (ADC) Applications

• Wireless and wired broadband communication systems
• Imaging systems requiring high dynamic range
• Ultrasound medical equipment
• Spectral analysis instruments
• Portable instrumentation devices

Analog To Digital Converters (ADC) Procurement Notes

Verify the ordering suffix #PBF indicates lead-free finish and RoHS compliance. Confirm the temperature grade 'C' corresponds to the commercial range of 0°C to 70°C. Ensure the QFN-32 package matches the PCB footprint requirements. Check for availability of the tape and reel option (#TRPBF) if automated assembly is required.

Analog To Digital Converters (ADC) Selection Notes

Select the LTC2226CUH#PBF when a 25Msps sampling rate is sufficient for the application bandwidth. Choose this part over the LTC2227 or LTC2228 if lower power consumption is prioritized over higher speed. Verify that the 12-bit resolution meets the system's dynamic range requirements. Consider the separate OVDD supply for output driver voltage compatibility with downstream logic levels.

Analog To Digital Converters (ADC) Part Context

The LTC2226 is part of the LTC222x family, which includes the faster LTC2227 (40Msps) and LTC2228 (65Msps). These parts share pin compatibility and similar architectural features, allowing for design flexibility across different speed grades within the same product line. The family is designed for demanding imaging and communications applications.

Analog To Digital Converters (ADC) Replacement Considerations

Pin-compatible alternatives within the same family include the LTC2227CUH#PBF (40Msps) and LTC2228CUH#PBF (65Msps) for higher speed requirements. For lower speed needs, the LTC2225CUH#PBF (10Msps) is available. Ensure thermal and power constraints are evaluated when substituting with higher-speed variants.