Linear LTC2145-14低功耗125Msps 14位模数转换方案.docx

Linear LTC2145-14低功耗125Msps 14位模数转换方案.docxLinear LTC2145-14低功耗125Msps 14位模数转换方案
关键字:通信技术,无线通信,蜂窝基站,工业控制,数据采集
Linear公司的LTCR2145-14/LTC2144-14/LTC2143-14是低功耗2路同时取样的14位模数转换器(ADC),,SFDR为90dB,取样速率达125Mbps,DC指标包括±1LSB INL, ± DNL,整个温度范围内不会丢失码,,主要用在通信,蜂窝基站,软件定义无线电(SDR),手提医疗图像设备,-14主要特性, 功能方框图,典型应用电路以及输入频率5MHz-150MHz, 150MHz-250MHz和大于250MHz的前端电路图, 1620A演示板电路图和材料清单(BOM).
The LTCR2145-14/LTC2144-14/LTC2143-14 are 2-channel simultaneous sampling 14-bit A/D converters designed for digitizing high frequency, wide dynamic range signals.
They are perfect for munications applications with AC performance that includes SNR and 90dB spurious free dynamic range (SFDR). Ultralow jitter of allows undersampling of IF frequencies with excellent noise performance.
DC specs include ±1LSB INL (typ), ± DNL (typ) and no missing codes over temperature. The transition noise is .
The digital outputs can be either full rate CMOS, double data rate CMOS, or double data rate LVDS. A separate output power supply allows the CMOS output swing to range from to .
The ENC+ and ENC– inputs may be driven differentially or single-ended with a sine wave, PECL, LVDS, TTL, or CMOS inputs. An optional clock duty cycle stabilizer allows high performance at full speed for a wide range of clock duty cycles.
LTC2145-14主要特性:
Two-Channel Simultaneously Sampling ADC