AD9670BBCZ

Overview

The AD9670BBCZ is an octal ultrasound analog front end (AFE) integrating eight independent channels, each containing a low-noise amplifier (LNA), variable gain amplifier (VGA), antialiasing filter, and a 14-bit analog-to-digital converter (ADC). It features a digital demodulator with a programmable oscillator and FIR decimation filter. The device supports Time Gain Compensation (TGC) modes at sampling rates up to 40 MSPS and Continuous Wave (CW) Doppler modes. Key specifications include a maximum channel gain of 52 dB, a close-in SNR of 156 dBc/√Hz at 1 kHz offset in CW mode, and power consumption as low as 62.5 mW per channel in CW operation.

Feature Summary

• Eight integrated channels combining LNA, VGA, antialiasing filter, 14-bit ADC, and digital demodulator/decimator
• Low power consumption: 150 mW per channel in TGC mode and 62.5 mW per channel in CW mode
• High dynamic performance with 160 dBFS/√Hz dynamic range and 156 dBc/√Hz close-in SNR
• Programmable I/Q demodulator with harmonic rejection and FIR decimation filter for bandwidth reduction

Applications

• Medical imaging and ultrasound systems
• Nondestructive testing (NDT)

Procurement Notes

Verify the specific suffix 'BBCZ' against the manufacturer's current ordering guide to confirm package type and temperature range. Confirm RoHS compliance status via the official datasheet or component database before procurement.

Selection Notes

Select this component for applications requiring high channel count integration with low power dissipation. Ensure the system clock requirements align with the supported modes (up to 125 MSPS) and that the LVDS output interface matches the downstream FPGA or processor capabilities.

Part Context

The AD9670 belongs to the Analog Devices ultrasound AFE family, designed specifically to reduce system complexity and board space for medical imaging. It consolidates multiple discrete signal chain components into a single CSPBGA-144 package, facilitating compact designs for portable and high-channel-count ultrasound probes.

Replacement Considerations

Consult the manufacturer's product selection guide for updated models within the AD9670 series or alternative ultrasound AFEs with compatible pinouts and electrical specifications.