The AFE5818 is a highly-integrated, analog front-end (AFE) solution specifically designed for ultrasound systems where high performance and small size are required. The device integrates a complete time-gain-control (TGC) imaging path and a continuous wave Doppler (CWD) path. The device also allows various power and noise combinations to be selected to optimize system performance. Therefore, the AFE5818 is a suitable ultrasound AFE solution for high-end and portable systems
The AFE5818 has a total of 16 channels, with each channel consisting of a voltage-controlled amplifier (VCA), a simultaneous sampling 14-bit and 12-bit analog-to-digital converter (ADC), and a continuous wave (CW) mixer. The VCA includes a low-noise amplifier (LNA), a voltage-controlled attenuator (VCAT), a programmable gain amplifier (PGA), and a low-pass filter (LPF). LNA gain is programmable and supports 250mVPP to 1VPP input signals and programmable active termination. The ultra-low noise VCAT provides an attenuation control range of 40dB and improves overall low-gain SNR, which benefits harmonic and near-field imaging. The PGA provides gain options of 24dB and 30dB. In front of the ADC, an LPF can be configured at 10MHz, 15MHz, 20MHz, 30MHz, 35MHz, or 50MHz to support ultrasound applications with different frequencies.
The AFE5818 also integrates a low-power passive mixer and a low-noise summing amplifier to create an on-chip CWD beamformer. 16 selectable phase delays can be applied to each analog input signal. Furthermore, a unique third- and fifth-order harmonic suppression filter is implemented to enhance CW sensitivity
The high-performance, 14-bit ADC achieves 75dBFS SNR. This ADC ensures excellent SNR at low-chain gain. The device can operate at maximum speeds of 65 MSPS and 80 MSPS, providing a 14-bit and a 12-bit output, respectively.
The ADC low-voltage differential signaling (LVDS) outputs enable a flexible system integration that is desirable for miniaturized systems.
The AFE5818 also allows various power and noise combinations to be selected to optimize system performance. Therefore, the AFE5818 is a suitable ultrasound AFE solution for both high-end and portable systems.
The AFE5818 is available in a 15mm × 15mm NFBGA-289 package (ZBV package, S-PBGA-N289) and are specified for operation from –40°C to 85°C. The devices are also pin-to-pin compatible with the AFE5816 device family.
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| Tipo | Título | Fecha | ||
|---|---|---|---|---|
| * | Data sheet | AFE5818 16-Channel, Ultrasound, Analog Front-End with 140mW/Channel Power, 0.75nV/√ Hz Noise, 14-Bit, 65-MSPS or 12-Bit, 80 MSPS ADC, and Passive CW Mixer datasheet | PDF | HTML | 01 mar 2024 |
| Technical article | Clock tree fundamentals: finding the right clocking devices for your design | PDF | HTML | 24 mar 2021 | |
| Technical article | Take your ultrasound design to the next level | PDF | HTML | 08 feb 2018 | |
| Application note | Understanding CW Mode for Ultrasound AFE Devices | 17 jul 2017 | ||
| Application note | Introduction to Ultrasound | 10 jul 2017 | ||
| EVM User's guide | AFE5818EVM User Guide (Rev. A) | 17 feb 2016 |
Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.
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<p>El módulo de evaluación (EVM) AFE58JD18 consiste en una solución de circuito frontal analógico (AFE) altamente integrada que se diseñó en concreto para sistemas de ultrasonido en los que se necesitan alto rendimiento y tamaño reducido. El AFE58JD18EVM integra una ruta completa de (...)
| Encapsulado | Pines | Símbolos CAD, huellas y modelos 3D |
|---|---|---|
| NFBGA (ZBV) | 289 | Ultra Librarian |
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