Texas Instruments Texas Instruments TPS7A3501有源滤波器
Texas Instruments TPS7A3501 是一款正电压、低噪声(3.8µVRMS) 功率滤波器,可提供 1A 负载,实现安静电源解决方案。TPS7A3501等功率滤波器在输入和输出端子上提供高效电压稳压(低插入损耗)以及电源抑制。该器件是针对电流高达1A 的 3.3V、2.5V 和 1.8V 电源的噪声滤波器的理想选择。借助一个单个外部电阻器,输入至输出电压稳压也是用户可编程的,范围为 200mV至500mV。如果未使用电阻器,TPS7A3501 提供 330mV 的输入至输出电压稳压。此器件与 10µF 输入和输出陶瓷电容器和一个10nF减噪陶瓷电容器一同工作时保持稳定。TPS7A3501工作于 –40℃到+85℃的宽幅温度范围。器件采用低热阻,2mm × SON-6 封装。与无源滤波器不同,TPS7A3501 提供针对自身和周围电路的过热保护和电流保护。特性
- 200mV to 500mV user-programmable input-to-output voltage regulation range
- Power-Supply Rejection Ratio
- 42dB at 1MHz
- ≥32dB (360kHz to 3.9MHz)
- 3.8µVRMS (10 Hz to 100 kHz) low-noise output
- Up to 1A output current
- 1.21V to 4.5V output voltage range
- Excellent load transient response
- Stable with ceramic capacitors as low as 10µF
- Current limit and thermal shutdown for fault protection
- Available in a low thermal resistance package: 2mm × 2mm SON-6
- -40°C to +125°C operating temperature range
应用
- Post DC/DC converter ripple filtering
- Base stations and telecom infrastructure
- Professional audio
- Communications
- Imaging
- Test and measurement
- Passive filter replacement
Functional Block Diagram
发布日期: 2014-01-15
| 更新日期: 2022-03-11
