LTC2291IUP#PBF

Analog To Digital Converters (ADC) Overview

The LTC2291IUP#PBF is a dual-channel, 12-bit analog-to-digital converter (ADC) from Analog Devices. It operates at a sampling rate of 25Msps with a single 3V supply (2.7V to 3.4V). Key electrical specifications include a typical Signal-to-Noise Ratio (SNR) of 71.4dB and a Spurious Free Dynamic Range (SFDR) of 90dB. The device features a pipeline architecture with a 575MHz full-power bandwidth sample-and-hold circuit. Power dissipation is rated at 150mW maximum. It utilizes a parallel digital interface and is housed in a 64-lead QFN package.

Analog To Digital Converters (ADC) Feature Summary

• Dual 12-bit ADCs with 25Msps sampling rate
• Low power operation: 150mW max at 25Msps
• High dynamic performance: 71.4dB SNR, 90dB SFDR
• Flexible input range: ±0.5V to ±1V via SENSE pins

Analog To Digital Converters (ADC) Applications

• Wireless and wired broadband communication systems
• Imaging systems requiring high-speed digitization
• Spectral analysis equipment
• Portable instrumentation devices

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific temperature grade suffix when ordering. The 'I' designation indicates an industrial operating range of -40°C to +85°C. Confirm that the #PBF suffix is required for lead-free compliance if specified by the design requirements. Ensure the QFN-64 package footprint matches the PCB layout constraints.

Analog To Digital Converters (ADC) Selection Notes

Select the LTC2291IUP#PBF when a 25Msps sampling rate is sufficient for the application, offering lower power consumption compared to the 40Msps (LTC2292) or 65Msps (LTC2293) variants. All members of this family share pin compatibility and similar AC performance metrics, allowing for potential future upgrades without redesigning the board layout.

Analog To Digital Converters (ADC) Part Context

This component belongs to the LTC229x family of low-power, dual 3V ADCs. It shares the same 64-pin QFN package and functional block diagram as the LTC2292 and LTC2293. The primary distinction between these parts is the maximum sampling frequency, which dictates the power dissipation levels while maintaining consistent resolution and dynamic accuracy.

Analog To Digital Converters (ADC) Replacement Considerations

The LTC2292IUP#PBF (40Msps) and LTC2293IUP#PBF (65Msps) are pin-compatible replacements within the same family. They offer higher sampling rates but consume more power (235mW and 400mW respectively). Verify that the system's power budget and thermal management can support the increased dissipation of these faster variants.