AD9257BCPZRL7-65

Analog To Digital Converters (ADC) Overview

The AD9257BCPZRL7-65 is an octal, 14-bit analog-to-digital converter (ADC) operating at a maximum conversion rate of 65 MSPS. It features eight independent channels with on-chip sample-and-hold circuits and requires a single 1.8 V power supply. The device utilizes serial LVDS digital outputs compliant with ANSI-644 standards. Key electrical specifications include a typical signal-to-noise ratio (SNR) of 75.5 dB to Nyquist and a spurious-free dynamic range (SFDR) of 91.6 dBc. Total power consumption across all channels in ANSI-644 mode is typically 547 mW. The component operates within an industrial temperature range of −40°C to +85°C.

Analog To Digital Converters (ADC) Feature Summary

• Octal architecture integrating eight 14-bit ADCs into a compact package for space-constrained designs.
• Low power consumption of 55 mW per channel at 65 MSPS with scalable options and individual channel power-down modes.
• Flexible digital interface supporting serial LVDS outputs with programmable clock alignment and data format selection.
• Built-in digital test pattern generation and SPI control for configuration without external reference or driver components.

Analog To Digital Converters (ADC) Applications

• Medical imaging and nondestructive ultrasound systems
• Portable ultrasound and digital beam-forming systems
• Quadrature and diversity radio receivers
• Optical networking equipment
• Test and measurement instrumentation

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix RL7 indicates reel packaging when sourcing from distributors. Confirm the -65 speed grade matches system timing requirements. Ensure the LFCSP-64 footprint aligns with PCB layout guidelines. Check RoHS compliance status if required by local regulations. Validate that the Rev B datasheet specifications apply to the manufactured lot.

Analog To Digital Converters (ADC) Selection Notes

Select this part for applications requiring high channel density and low power dissipation. Compare against the AD9637 if pin compatibility is needed but lower resolution is acceptable. Consider the AD9257-40 variant if a lower sampling rate of 40 MSPS suffices for reduced power needs. Evaluate thermal performance using the provided junction-to-ambient resistance values for the specific PCB stack-up.

Analog To Digital Converters (ADC) Part Context

This component belongs to the Analog Devices AD9257 family of high-speed octal ADCs. It shares architectural similarities with other members like the AD9257-40 and the AD9637. The device is designed to replace older multi-channel solutions by consolidating functionality into a single small-footprint package. It supports various clocking schemes including CMOS, LVDS, and LVPECL inputs.

Analog To Digital Converters (ADC) Replacement Considerations

The AD9637 is a pin-compatible alternative offering 12-bit resolution. The AD9257-40 provides identical functionality at a reduced 40 MSPS sampling rate. Verify pinout compatibility and software register settings when substituting these variants in existing designs.