Analog Devices Inc. ADG5412F/ADG5413F 故障保护&检测四通道 SPST 开关
亚德诺半导体 ADG5412F/ADG5413F 故障保护和检测四通道 SPST 开关，包括四个独立控制的 单刀单掷（SPST）开关，实现 高达 −55V 和 +55V 的过压保护。ADG5412F 具有四个开关，通过 逻辑 1 输入打开。ADG5413F 具有两个通过逻辑 1 输入打开的开关 和两个通过逻辑 1 输入关闭的开关。当接通时，各通道在两个方向的 导电性能相同，输入信号范围 可扩展至电源电压范围。在整个工作电压范围内， 数字输入与 3V 逻辑输入兼容。没有电源时， 通道保持关断状态，开关输入 处于高阻态。在正常工作条件下，如果 任何一个 Sx 引脚上的模拟输入信号电平 VDD 或 VSS 和 ，并且超出幅度达到阈值电压 VT， 则开关断开。在通电和无电状态下，对地高达 +55V 或 −55V 输入信号电平会被屏蔽。 ADG5412F/ADG5413F 开关具有 10Ω 的低导通电阻， 结合大部分信号范围内的导通电阻平坦度， 使这些器件适合数据采集和增益开关 应用，在这些应用中出色的线性度和低失真性能至关重要。
When powered on, each switch conducts equally well in both directions, and each switch has an input signal range that extends to the supplies. The digital inputs are compatible with 3V logic inputs over the full operating supply range. When power supplies are absent, the switch remains in the off condition, and the switch inputs are high impedance. Under normal operating conditions, if the analog input signal levels on any Sx pin exceed VDD or VSS by a threshold voltage, VT, the switch turns off. Input signal levels up to +55V or −55V relative to the ground are blocked, in both the powered and unpowered conditions.
The low on-resistance of 10Ω of the ADG5412F/ADG5413F switches, combined with on-resistance flatness over a significant portion of the signal range, make it an ideal solution for data acquisition and gain switching applications where excellent linearity and low distortion are critical.
特性
- 4 x SPST Switch Configuration
- Overvoltage protection up to −55V and +55V
- Power-off protection up to −55V and +55V
- Overvoltage detection on source pins
- Low on-resistance: 10Ω
- On-resistance flatness of 0.5Ω
- 5.5kV human body model (HBM) ESD rating
- Latch-up immune under any circumstance
- Known state without digital inputs present
- VSS to VDD analog signal range
- ±5V to ±22V dual supply operation
- 8V to 44V single-supply operation
- Fully specified at ±15V, ±20V, +12V, and +36V
应用
- Analog input/output modules
- Process control/distributed control systems
- Data acquisition
- Instrumentation
- Avionics
- Automatic test equipment
- Communication systems
- Relay replacement
Block Diagrams
Additional Resources
New, Robust Approach to Overvoltage Protection for Sensitive Electronic Signal Inputs
When designing the protection circuit, traditional solutions often require a compromise between system accuracy and the protection level. Discover a new robust approach to overvoltage protection for sensitive electronic signal inputs with the ADG5412.