ADI ADL5580全差分10dB增益10GHz ADC驱动器解决方案

ADI公司的ADL5580是高性能单端或差分放大器,10dB电压增益,应用频率从DC到10.0GHz.放大器提供低参考输入(RTI)噪音频谱密度(NSD)2.24 nV/√Hz (1000 MHz),在宽频率范围有最佳的失真性能,使得器件非常适合驱动高速12位到16位模数转换器(ADC).ADL5580适合用在高性能零中频(IF)和复杂IF接收器设计.此外,器件还具有低失真,以用于单端输入驱动器应用.器件的-3dB带宽为10.0GHz,预设10dB增益,可用外接电阻来降低.差分或单端输入到差分输出,100MHz时的输入电压噪音(NSD,RTI)为2.25 nV/√Hz,1GHz时的低输入噪音为11.3dB,5.0V和-1.8V电源,1.4Vp-p输出差分和50 Ω||1 pF的失真,2GHz时HD2为−59.4 dBc, HD3为−54.3 dBc,IMD3为−68.2 dBc;6GHz时HD2为−66 dBc, HD3为−88.1 dBc,IMD3为−48.3 dBc.5.0V的正电流为276mA,-1.8V的负电流为-224mA.主要用在仪器和国防应用.本文介绍了ADL5580主要特性和功能框图,基本连接框图以及评估板ADL5580-EVALZ主要特性,连接图和测量建立图,电路图和材料清单.

The ADL5580 is a high performance, single-ended or differential amplifier with 10 dB of voltage gain, optimized for applications spanning from dc to 10.0 GHz. The amplifier offers a low referred to input (RTI) noise spectral density (NSD) of 2.24 nV/√Hz (at 1000 MHz) and is optimized for distortion performance over a wide frequency range, making the device an ideal driver for high speed 12-bit to 16-bit analog-to-digital converters (ADCs). The ADL5580 is suited for use in high performance, zero intermediate frequency (IF), and complex IF receiver designs. In addition, this device has low distortion for single-ended input driver applications.

By using two external series resistors, the gain selection from 10 dB for a differential input can be modified to a lower gain. The device maintains low distortion through its output common-mode voltage (VCM) of 0.5 V, providing a flexible capability for driving ADCs with full-scale levels up to 1.4 V p-p. Operating from a +5 V and −1.8 V supply, the positive and negative supply current of the ADL5580 is typically +276 mA and −224 mA, respectively. The d...