AD9272BSVZ-65

Overview

The AD9272BSVZ-65 is an octal analog front-end integrated circuit from Analog Devices, combining a low noise preamplifier (LNA), variable gain amplifier (VGA), antialiasing filter (AAF), and a 12-bit analog-to-digital converter (ADC) in a single channel. It features a sampling rate of up to 65 MSPS with a typical Signal-to-Noise Ratio (SNR) of 70 dB and Spurious-Free Dynamic Range (SFDR) of 75 dB. The device operates on 1.8 V and 3.0 V supplies, dissipating approximately 195 mW per channel at 40 MSPS. It utilizes a serial LVDS interface for data output and includes an 8x8 differential crosspoint switch for continuous wave Doppler applications.

Feature Summary

• Integrated Octal Channel: Contains eight independent channels, each with LNA, VGA, AAF, and 12-bit ADC.
• High Performance ADC: Delivers 70 dB SNR and 75 dB SFDR at 12-bit resolution with sampling rates up to 65 MSPS.
• Programmable Gain and Filtering: Features SPI-programmable LNA gains (15.6/17.9/21.3 dB), VGA attenuation range (-42 dB to 0 dB), and programmable AAF LPF (8 MHz to 18 MHz).
• CW Doppler Support: Includes an 8x8 differential crosspoint switch and transconductance outputs optimized for continuous wave Doppler radar modes.

Applications

• Medical imaging and ultrasound systems
• Automotive radar sensors

Procurement Notes

Verify the specific speed grade suffix (e.g., -65) against the required maximum sampling rate during procurement. Confirm that the 100-lead TQFP package dimensions align with the target PCB footprint. Ensure supply voltages match the specified 1.8 V and 3.0 V requirements for AVDD1, AVDD2, and DRVDD pins.

Selection Notes

Select the AD9272BSVZ-65 when a sampling rate between 40 MSPS and 65 MSPS is required. Choose this component over the -40 or -80 variants based on specific bandwidth needs and power constraints. Consider the integrated crosspoint switch if CW Doppler functionality is necessary to reduce external component count.

Part Context

The AD9272 series is part of Analog Devices' family of octal analog front-ends designed for high-channel-count applications. The BSVZ suffix indicates a lead-free, RoHS-compliant variant housed in a 16 mm x 16 mm 100-lead TQFP package. This packaging allows for compact system designs while maintaining thermal performance within the industrial temperature range of -40°C to +85°C.

Replacement Considerations

The AD9272BSVZ-40 offers similar functionality with a lower maximum sampling rate of 40 MSPS. The AD9272BSVZ-80 provides support for sampling rates up to 80 MSPS. Verify pin compatibility and software register settings when substituting between these speed grades.