TI ADC12J4000 12位4GSPS取样模数转换解决方案

TI公司的ADC12J4000是低功耗12位4GSPS RF取样模数转换器(ADC),具有JESD204B接口,输入高于2.7GHz时有极好的噪音和线性度,最大取样速率4000MSPS,DDC输出字宽15位复数(总数30位),噪音水平－149 dBFS/Hz或－150 dbm/Hz,主要用在多标准3G和4G通信系统,RF取样SDR,宽带微波骨干网,军用通信, SIGINT, RADAR和LIDAR以及宽带通信系统, 测试测量.本文介绍了ADC12J4000主要特性, ADC12J4000框图以及评估板ADC12J4000EVM主要特性.测试框图,电路图,材料清单和PCB元件布局图.
The ADC12J4000 device is a wideband sampling and digital tuning device. The core technology contained in the device is Texas Instruments’ giga-sample analog-to-digital converter (ADC) technology that enables a large block of frequency spectrum to be sampled directly at RF. This technology is combined with low-power digital-processing blocks that provide digital filtering and down-conversion.The selected frequency block is made available on a JESD204B serial interface that is compatible with downstream system-processing elements. Data is output as baseband 15-bit complex information for ease of downstream processing. Based on the digital down-converter (DDC) decimation and link output rate settings, this data is output on 1 to 8 lanes of the serial interface.
A DDC bypass mode allows the full rate 12-bit raw ADC data to also be output. This mode of operation requires 8 lanes of serial output.
Clear advantages of the ADC12J4000 device over existing solutions currently available on the market are scalability, cost per radio path, power consumption per radio path, and flexibility.
The ADC12J4000 device is available in a 68 terminal QFN package. The device operates over the Industrial (–40℃ ≤ TA ≤ 85℃) ambient temperature range.
ADC12J4000主要特性:
Excellent Noise and Linearity up to and beyond FIN = 2.7 GHz
Configurable DDC
Decimation Factors from 4 to 32 (Complex Baseband Out)
Raw Output Bandwidth of 1000 MHz at 4x Decimation and 4000 MSPS
Raw Output Bandwidth of 125 MHz at 32x Decimation and 4000 MSPS
Bypass...