AD9648BCPZ-105

Analog To Digital Converters (ADC) Overview

The AD9648BCPZ-105 is a monolithic, dual-channel, 1.8 V supply, 14-bit analog-to-digital converter (ADC) operating at up to 105 MSPS. It features a multistage differential pipeline architecture with output error correction logic and an on-chip voltage reference. The device guarantees no missing codes over the full industrial temperature range of −40°C to +85°C. Key electrical specifications include a signal-to-noise ratio (SNR) of 73.0 dBFS at 70 MHz and a spurious-free dynamic range (SFDR) of 82 dBc at 70 MHz. Power consumption is 106 mW per channel at maximum sampling rates. The ADC supports 1.8 V CMOS or LVDS digital outputs and includes programmable clock/data alignment and test pattern generation via SPI.

Analog To Digital Converters (ADC) Feature Summary

• Multistage differential pipeline architecture with integrated output error correction logic for high accuracy
• On-chip sample-and-hold circuit and voltage reference minimizing external component requirements
• Programmable digital test pattern generation including deterministic, pseudorandom, and user-defined patterns
• Flexible data output formats supporting offset binary, Gray code, and twos complement

Analog To Digital Converters (ADC) Applications

• Diversity radio systems
• Multimode digital receivers
• I/Q demodulation systems
• Portable medical imaging
• Radar/LIDAR

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix '105' indicates the 105 MSPS conversion rate variant rather than the 125 MSPS version. Confirm the package type matches the 64-lead LFCSP specification. Ensure the ordering code aligns with the required RoHS compliance status. Cross-reference the datasheet revision to confirm pinout consistency with existing designs.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a dual-channel 14-bit resolution is required for intermediate frequency sampling applications. Consider the 105 MSPS speed limit if system timing allows for lower power consumption compared to the 125 MSPS variant. Evaluate the need for LVDS versus CMOS outputs based on the receiving logic interface requirements and board space constraints.

Analog To Digital Converters (ADC) Part Context

The AD9648 belongs to Analog Devices' family of high-speed, high-resolution data converters. It shares pin compatibility with other members of the series, such as the AD9650, AD9269, and AD9258, facilitating migration between different resolutions and speeds within the same footprint. This design simplifies hardware upgrades in multi-standard cellular infrastructure equipment.

Analog To Digital Converters (ADC) Replacement Considerations

The AD9648BCPZ-125 serves as a higher-speed alternative within the same package. For single-channel applications, the AD9642 offers comparable performance in a smaller footprint. Verify pin compatibility before substituting with other ADI ADCs to ensure seamless integration without PCB redesign.