ADI AD9083 16路125MHz带宽JESD204B ADC解决方案

ADI公司的AD9083是16路125MHz带宽连续时间Σ-Δ (CTSD) ADC,器件具有片上可编程单极抗混淆滤波器和终端电阻,以得到低功耗小型尺寸和容易使用.16个ADC核具有第一阶CTSD调制器架构,并集成背景非线性修正逻辑和自消除抖动.每个ADC具有宽带宽输入,支持用户可选择的输入范围.其集成的电压基准使得设计更方便.工作电压1.0V和1.8V, 125MHz可用模拟输带宽,取样频率高达标2GSPS,100MHz带宽的噪声频谱密度为−145 dBFS/Hz( 2.0 GSPS编码);100 MHz带宽和2.0 GSPS编码的SNR为66 dBFS,SFDR为60dBc,15.625 MHz带宽和2.0 GSPS编码的SNR为82 dBFS, SFDR为80dBc.取样2.0GSPS时每路的功耗为90mW,通路间串扰为90dB.器件工作温度−40C到+85C.主要用在毫米波成像,电子束成形和相阵列,多路宽带接收器和电子支持测量.本文介绍了AD9083主要特性和产品亮点,功能框图以及评估板AD9083EBZ主要特性和优势,电路图和材料清单.

The AD9083 is a 16-channel, 125 MHz bandwidth, continuous time Σ-Δ (CTSD) ADC. The device features an on-chip, programmable, single-pole antialiasing filter and termination resistor that is designed for low power, small size, and ease of use.

The 16 ADC cores features a first-order, CTSD modulator architecture with integrated, background nonlinearity correction logic and self cancelling dither. Each ADC features wide bandwidth inputs supporting a variety of user-selectable input ranges. An integrated voltage reference eases design considerations.

The analog input and clock signals are differential inputs. Each ADC has a signal processing tile to filter out of band shaped noise from the Σ-Δ ADC and reduce the sample rate. Each tile contains a cascaded integrator comb (CIC) filter, a quadrature digital downconverter (DDC) with multiple finite input response (FIR) decimation filters (decimate by J block), or up to three quadrature DDC channels with averaging decimation filters for data gating applications.

Users can configure the Subclass 1 JESD204B based, high speed serialized output in a variety of lane configurations (up to four), depending on the DDC configuration and the acceptabl...