AD9251BCPZ-65

Overview

The AD9251BCPZ-65 is a dual-channel, 14-bit analog-to-digital converter (ADC) from Analog Devices Inc. It operates at a maximum sampling rate of 65 MSPS with a differential input bandwidth of 700 MHz. The device requires a single 1.8 V analog supply and supports digital output driver supplies between 1.7 V and 3.6 V. Key performance metrics include a Signal-to-Noise Ratio (SNR) of 74.3 dBFS at a 9.7 MHz input frequency and a Spurious-Free Dynamic Range (SFDR) of 93 dBc under the same conditions. Power consumption is specified at 73 mW per channel at the maximum sample rate. The component is housed in a 64-lead LFCSP package and functions within an industrial temperature range of -40°C to +85°C.

Feature Summary

• Integrates high-performance sample-and-hold circuitry and an on-chip voltage reference to simplify system design.
• Features a multistage differential pipeline architecture with output error correction logic for guaranteed linearity.
• Includes a serial port interface (SPI) for programmable configuration of data formatting, clock dividers, and power modes.
• Supports flexible digital output formats including offset binary, gray code, and twos complement.

Applications

• Diversity radio systems
• Multimode digital receivers
• I/Q demodulation systems
• Smart antenna systems

Procurement Notes

Verify the specific suffix BCPZ corresponds to the Lead-free LFCSP-64 package variant when sourcing. Confirm that the procurement documentation explicitly references the AD9251 datasheet Rev. C specifications. Ensure the supplier provides traceability for the Analog Devices manufacturer origin. Cross-reference the part number against current availability lists as distribution status may vary by region.

Selection Notes

Select this model for applications requiring dual-channel conversion at 65 MSPS with 14-bit resolution. Verify that the system clock requirements align with the 65 MSPS maximum conversion rate. Ensure the host logic voltage levels are compatible with the selectable DRVDD range of 1.7 V to 3.6 V. Consider the thermal characteristics of the 64-lead LFCSP package for PCB layout planning.

Part Context

This component belongs to the AD9251 family of low-power, high-speed ADCs. It shares pin compatibility with other members of the series, such as the AD9258 and AD9268, facilitating migration paths between different resolutions and speeds. The device utilizes a patented sample-and-hold circuit designed to maintain performance at input frequencies up to 200 MHz while minimizing power consumption.

Replacement Considerations

The AD9251BCPZ-40 and AD9251BCPZ-20 are pin-compatible variants within the same family offering lower sampling rates. The AD9251BCPZ-80 offers a higher sampling rate of 80 MSPS. These parts share the same 64-lead LFCSP package and electrical interface, allowing for direct substitution if speed requirements permit.