深圳市烨弘轩电子有限公司

AFE5828ZAV 制造商: Texas Instruments

产品种类: 模拟前端 – AFE  

系列: AFE5828

类型: Ultrasound AFE

分辨率: 12 bit, 14 bit

采样比: 65 MS/s, 80 MS/s

通道数量: 16 Channel

接口类型: LVDS

电源电压-: 3.6 V

AFE5828ZAV  电源电压-: 3.15 V

工作温度: 0 C

工作温度: + 85 C

AFE5828ZAV 安装风格: SMD/SMT

封装 / 箱体: NFBGA-289

封装: Tray

特点: Analog Front End (AFE)  

产品: Analog Front End  

商标: Texas Instruments  

产品类型: Analog Front End - AFE  

工厂包装数量: 126  

AFE5828ZAV描述

The AFE5828 device is a highly-integrated, analog front-end (AFE) solutions specifically designed for ultrasound systems where high performance, low power, and small size are required.

The AFE5828 is an integrated AFE optimized for medical ultrasound application. The device is realized through a multichip module (MCM) with two dies: one voltage-controlled amplifier (VCA) die and one analog-to-digital converter (ADC) die. The VCA die has 16 channels that interface with the 16 channels of the ADC die.

AFE5828ZAV Each channel in the VCA die can be configured in one of two modes: time gain compensation (TGC) mode or continuous wave (CW) mode. In TGC mode, each channel includes a low-noise amplifier (LNA), a voltage-controlled attenuator (VCAT), a programmable gain amplifier (PGA), and a third-order, low-pass filter (LPF). The LNA is programmable in gains of 21 dB, 18 dB, or 15 dB. The LNA also supports active termination. The VCAT supports an attenuation range of 0 dB to 36 dB, with analog voltage control for the attenuation. The PGA provides gain options from 18 dB to 27 dB in steps of 3 dB. The LPF cutoff frequency can be set between 10 MHz and 30 MHz to support ultrasound applications with different frequencies. In CW mode, the output of the LNA goes to a low-power passive mixer with 16 selectable phase delays followed by a summing amplifier with a band-pass filter. Different phase delays can be applied to each analog input signal to perform an on-chip beamforming operation. A harmonic filter in the CW mixer suppresses the third and fifth harmonic to enhance the sensitivity of the CW Doppler measurement.

The 16 channels of the ADC die can be configured to operate with a resolution of 14 bits or 12 bits. The ADC resolution can be traded off with conversion rate, and can operate at maximum speeds of 65 MSPS and 80 MSPS at 14-bit and 12-bit resolution, respectively. The ADC is designed