Analog Devices Inc. AD8375 超低失真 IF VGA
Analog Devices AD8375 超低失真 IF VGA 是一款数字控制、可变增益、宽带宽放大器，可以提供精密增益控制、高IP3与低噪声系数。出众的低失真性能与宽信号带宽使得AD8375成为差分ADC驱动器、高中频采样接收机、宽带多通道接收机等多种接收机应用中的理想增益控制器件。AD8375采用先进的高速SiGe工艺制作，集成专有失真消除技术，在200MHz时能获得50dBm的IP3输出。AD8375能以1dB的分辨率提供24dB宽增益范围。其静态电流典型值为130mA。在省电模式下，AD8375待机电流仅为5mA，可以提供出色的输入-输出隔离。
The ADI AD8375 uses an advanced high speed SiGe process and incorporates proprietary distortion cancellation techniques, allowing it to achieve 50dBm output IP3 at 200MHz. AD8375 provides a broad 24dB gain range with 1dB resolution. The quiescent current of the AD8375 is typically 130mA. When powered down, AD8375 consumes less than 5mA and offers excellent input-to-output isolation.
特性
- Bandwidth of 630MHz (−3dB)
- Gain range of −4dB to +20dB
- Step size of 1dB ± 0.2dB
- Differential input and output
- Noise figure of 8dB @ maximum gain
- Output IP3 of ~50dBm at 200MHz
- Output P1dB of 19dBm at 200MHz
- Provides constant SFDR vs. gain
- Parallel 5-bit control interface
- Power-down feature
- Single 5V supply operation
- 24-lead, 4mm × 4mm LFCSP
应用
- Differential ADC drivers
- High IF sampling receivers
- Wideband multichannel receivers
- Instrumentation
Functional Block Diagram
发布日期: 2013-06-03
| 更新日期: 2022-03-11