AD9273BBCZ-25

Overview

The AD9273BBCZ-25 is an octal analog front-end integrated circuit manufactured by Analog Devices Inc. It integrates eight independent channels, each comprising a low noise preamplifier (LNA), a variable gain amplifier (VGA), an antialiasing filter (AAF), and a 12-bit analog-to-digital converter (ADC). The device supports sampling rates up to 25 MSPS with a typical signal-to-noise ratio of 64 dB at this speed grade. It operates on dual analog supplies of 1.8 V and 3.0 V, alongside a 1.8 V digital supply. The component is housed in a 144-ball CSPBGA package and functions within an industrial temperature range of -40°C to +85°C.

Feature Summary

• Integrates eight complete signal chains featuring LNA, VGA, AAF, and 12-bit ADC per channel
• Supports single-ended inputs with programmable LNA gains of 15.6 dB, 17.9 dB, or 21.3 dB
• Includes an 8x8 differential crosspoint switch for continuous wave Doppler applications
• Features SPI-programmable second-order antialiasing filters with cutoff frequencies from 8 MHz to 18 MHz

Applications

• Medical imaging systems
• Ultrasound equipment
• Automotive radar sensors

Procurement Notes

Verify the specific speed grade suffix '25' corresponds to the required 25 MSPS maximum sampling rate during procurement. Confirm that the 144-ball BGA package requires appropriate surface mount technology capabilities for assembly. Ensure the design accommodates the specified power supply requirements of 1.8 V and 3.0 V for optimal performance.

Selection Notes

Select the AD9273BBCZ-25 when eight-channel parallel acquisition is required with integrated signal conditioning. This model is suitable for designs prioritizing low power consumption, achieving approximately 996 mW total dissipation at 40 MSPS equivalent speeds. Consider the BGA footprint constraints and the need for LVDS-compatible clocking interfaces when integrating this component into the system architecture.

Part Context

This component belongs to the AD9273 family of octal analog front ends. Other variants include the AD9273BSVZ-25 in a TQFP package and higher-speed grades such as the AD9273BBCZ-40 and AD9273BBCZ-50. The BBCZ suffix denotes the 144-ball BGA package option, while the trailing number indicates the maximum supported sampling rate speed grade.

Replacement Considerations

The AD9273BSVZ-25 serves as a pin-compatible alternative utilizing a 100-lead TQFP package instead of the BGA form factor. Higher performance requirements may necessitate the AD9273BBCZ-40 or AD9273BBCZ-50 models, which support sampling rates up to 40 MSPS and 50 MSPS respectively.