AD9251BCPZ-80

Overview

The AD9251BCPZ-80 is a monolithic, dual-channel, 14-bit analog-to-digital converter (ADC) operating at an 80 MSPS sampling rate. It utilizes a multistage differential pipeline architecture with output error correction logic to ensure no missing codes across the full operating temperature range. The device features a high-performance sample-and-hold circuit and an on-chip voltage reference. It operates from a single 1.8 V analog supply and supports digital driver supplies ranging from 1.8 V to 3.3 V. Key specifications include a 700 MHz differential input bandwidth, 2 V p-p differential input span, and SNR of 71.5 dBFS at 200 MHz input frequency.

Feature Summary

• Multistage differential pipeline architecture with output error correction logic for guaranteed accuracy
• Integrated sample-and-hold circuit and on-chip voltage reference for low cost and ease of use
• Serial port interface supporting programmable clock/data alignment, power-down modes, and test pattern generation
• Flexible digital output formatting including offset binary, gray code, or twos complement

Applications

• Communications systems including GSM, EDGE, W-CDMA, LTE, CDMA2000, WiMAX, and TD-SCDMA
• Diversity radio systems and multimode digital receivers
• I/Q demodulation systems and smart antenna systems
• Portable medical imaging and ultrasound equipment
• Battery-powered instruments and hand-held scope meters

Procurement Notes

Verify the specific suffix 'BCPZ' corresponds to the lead-free LFCSP package variant when sourcing. Confirm that the '-80' designation matches the required 80 MSPS conversion rate specification. Ensure the ordering documentation explicitly lists Analog Devices Inc. as the manufacturer to avoid counterfeit components. Cross-reference the RoHS compliance status with current regulatory requirements for the target deployment region.

Selection Notes

Select this component when a dual-channel, 14-bit resolution is required at speeds up to 80 MSPS. Consider the 1.8 V analog supply requirement and the separate DRVDD range of 1.8 V to 3.3 V for logic compatibility. Evaluate the 700 MHz input bandwidth against the maximum input signal frequency. Verify that the system can accommodate the 64-lead LFCSP package dimensions and thermal dissipation needs.

Part Context

This part belongs to the AD9251 family of dual-channel ADCs, which also includes variants operating at 20 MSPS, 40 MSPS, and 65 MSPS. The device is pin-compatible with other members of the AD92xx series, such as the AD9268, AD9258, AD9231, and AD9204, facilitating migration between different resolutions and speeds within the same package footprint.

Replacement Considerations

Direct pin-compatible replacements within the same package include the AD9251BCPZ-20, AD9251BCPZ-40, and AD9251BCPZ-65, though these operate at lower sampling rates. For higher performance or different resolutions, verify pin compatibility with the AD9268, AD9258, AD9231, or AD9204 families.