AD9674KBCZ

Overview

The AD9674KBCZ is an octal ultrasound analog front end (AFE) from Analog Devices, designed for medical imaging and nondestructive testing. It integrates eight channels, each containing a low-noise amplifier (LNA), variable gain amplifier (VGA), anti-aliasing filter (AAF), 14-bit ADC, and digital RF decimator. The device supports TGC and CW Doppler modes with sampling rates up to 125 MSPS. Key electrical parameters include a 14-bit resolution, 75 dB SNR at 5 MHz input, and close-in SNR of 156 dBc/√Hz in CW mode. Power consumption is 150 mW per channel in TGC mode and 62.5 mW in CW mode. It operates within a temperature range of 0°C to 85°C and uses a 10 mm × 10 mm, 144-ball CSP_BGA package.

Feature Summary

• Integrates eight independent channels with LNA, VGA, AAF, 14-bit ADC, and digital RF decimator.
• Supports Time Gain Compensation (TGC) and Continuous Wave (CW) Doppler modes with programmable phase rotation.
• Features low power consumption: 150 mW/channel in TGC mode and 62.5 mW/channel in CW mode.
• Includes built-in digital test pattern generation and programmable clock/data alignment via SPI.

Applications

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

Procurement Notes

Verify the component against the official Analog Devices datasheet Rev. A to confirm pinout, electrical specifications, and package dimensions. Ensure compatibility with system voltage requirements (AVDD1: 1.8 V, AVDD2: 3.0 V, DVDD: 1.4 V, DRVDD: 1.8 V). Check for moisture sensitivity level (MSL) handling requirements during assembly. Confirm that the ordering suffix matches the required package and temperature grade.

Selection Notes

Select the AD9674KBCZ for applications requiring high dynamic range and low power in a compact form factor. Choose this part when eight-channel integration is needed for ultrasound beamforming or NDT. Consider the available gain settings (up to 52 dB) and the programmable AAF cutoff frequencies. Evaluate the power-down features if battery life is critical for portable devices. Ensure the system can support the LVDS digital output interface and SPI control.

Part Context

The AD9674 is part of Analog Devices' ultrasound AFE family, optimized for cost-effective and low-power medical imaging solutions. It complements other ADI data converters by providing integrated signal conditioning and digitization. The device is suitable for replacing discrete solutions, reducing board space and design complexity. It is manufactured using BiCMOS technology to achieve high performance and low noise.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the source material. Consult Analog Devices for potential cross-references or updated revisions.