Overview
The ADG509FBRUZ is a CMOS analog multiplexer produced by Analog Devices Inc. This device is part of the ADG509F series, which features four differential channels. It is designed to provide robust fault protection and reliable performance in various analog switching applications. The ADG509F switches one of four differential inputs to a common differential output, controlled by 2-bit binary address lines A0 and A1. An additional enable (EN) input allows the device to be enabled or disabled, with all channels switched off when disabled.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Channels | 4 differential channels |
| Switch Circuit | SP4T |
| Multiplexer/Demultiplexer Circuit | 4:1 |
| On-State Resistance (Max) | 270 Ω (Typ) |
| Channel-to-Channel Matching (ΔRon) | 8.1 Ω |
| Voltage - Supply, Dual (V±) | ±15 V |
| Switch Time (Ton, Toff) (Max) | 230 ns, 130 ns |
| Charge Injection | 15 pC |
| Channel Capacitance (CS(off), CD(off)) | 3 pF, 12 pF |
| Current - Leakage (IS(off)) (Max) | 1 nA |
| Operating Temperature | -40°C to 85°C |
| Package / Case | 16-TSSOP (0.173", 4.40mm Width) |
Key Features
- Fault Protection: The ADG509F can withstand continuous overvoltage inputs from -40 V to +55 V, even when the power supplies are off, ensuring protection for both the device and the signal sources.
- Low RON: The device features a low on-state resistance, typically 270 Ω, which minimizes signal attenuation.
- Fast Switching Times: Switching times are as low as 230 ns for turn-on and 130 ns for turn-off, making it suitable for high-speed applications.
- Break-Before-Make Switching: This ensures that input signals are protected against momentary shorting.
- Trench Isolation: Prevents latch-up by separating the p and n-channel MOSFETs with a dielectric trench.
- Low Leakage Current: During fault conditions, the leakage current is limited to a few nanoamperes, protecting the circuitry and signal sources.
Applications
The ADG509FBRUZ is suitable for a variety of applications where reliable and fault-tolerant analog switching is required. These include:
- Industrial Automation: For controlling and switching analog signals in industrial control systems.
- Medical Devices: In medical equipment where signal integrity and fault protection are critical.
- Aerospace and Defense: For applications requiring high reliability and robustness against overvoltages.
- Test and Measurement Equipment: To switch between different analog signals in test and measurement setups.
Q & A
- What is the primary function of the ADG509FBRUZ?
The ADG509FBRUZ is a CMOS analog multiplexer that switches one of four differential inputs to a common differential output. - How many channels does the ADG509FBRUZ have?
The device has four differential channels. - What is the maximum on-state resistance of the ADG509FBRUZ?
The maximum on-state resistance is typically 270 Ω. - What is the operating temperature range of the ADG509FBRUZ?
The operating temperature range is from -40°C to 85°C. - How does the ADG509FBRUZ protect against overvoltages?
The device can withstand continuous overvoltage inputs from -40 V to +55 V, even when the power supplies are off, by using a series n-channel, p-channel, n-channel MOSFET structure. - What is the purpose of the EN input on the ADG509FBRUZ?
The EN input is used to enable or disable the device, with all channels switched off when disabled. - What is the switch time for the ADG509FBRUZ?
The switch time is typically 230 ns for turn-on and 130 ns for turn-off. - How does the ADG509FBRUZ prevent latch-up?
The device prevents latch-up by using trench isolation to separate the p and n-channel MOSFETs. - What is the leakage current during fault conditions?
The leakage current is limited to a few nanoamperes during fault conditions. - In what package is the ADG509FBRUZ available?
The device is available in a 16-TSSOP package.
