AD9671KBCZ

Overview

The AD9671KBCZ is an octal analog front end (AFE) designed for medical ultrasound and nondestructive testing applications. It integrates eight channels, each containing a low-noise preamplifier (LNA), variable gain amplifier (VGA), programmable antialiasing filter (AAF), and a 14-bit ADC operating up to 125 MSPS. The device features a CW Doppler harmonic rejection I/Q demodulator with programmable phase rotation, a digital demodulator/decimator, and JESD204B serial outputs. Key electrical specifications include a typical SNR of 75 dB, LNA input-referred noise as low as 0.78 nV/√Hz, and power consumption of 150 mW per channel in TGC mode. It is housed in a 144-ball CSP_BGA package measuring 10 mm × 10 mm.

Feature Summary

• Eight integrated channels featuring LNA, VGA, AAF, 14-bit ADC, and digital demodulator/decimator
• Continuous wave (CW) Doppler mode with harmonic rejection I/Q demodulator and programmable phase rotation
• JESD204B Subclass 0 coded serial digital outputs supporting lane rates up to 5.0 Gbps
• Low power consumption: 150 mW per channel in TGC mode at 40 MSPS; <30 mW in power-down mode

Applications

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

Procurement Notes

Verify the component against the official Analog Devices AD9671 datasheet Rev. A to confirm pinout compatibility and electrical parameters. Ensure that the system design accounts for the specific supply voltage requirements (AVDD1 = 1.8 V, AVDD2 = 3.0 V, DVDD = 1.4 V, DRVDD = 1.8 V). Confirm thermal management strategies are adequate for the specified junction-to-ambient thermal resistance.

Selection Notes

Select this component for designs requiring high integration and low power in a small footprint. The AD9671 supports sampling rates from 40 MSPS to 125 MSPS. Consider the available PGA gain options (21 dB to 30 dB) and LNA gain settings (15.6 dB, 17.9 dB, or 21.6 dB) when matching input signal levels. Verify that the host processor supports the JESD204B interface protocol for data acquisition.

Part Context

The AD9671KBCZ belongs to the AD9671 family of octal ultrasound AFEs manufactured by Analog Devices Inc. It is specifically optimized for applications where small package size and low power are critical constraints. The 'KBCZ' suffix indicates the specific package type (CSP_BGA) and compliance status within the product line.

Replacement Considerations

Publicly confirmed substitute part numbers are not provided in the source documentation.