Overview
The ADG509FBRWZ is a CMOS analog multiplexer produced by Analog Devices Inc. This device is part of the ADG509F series, which comprises four differential channels. It is designed to switch 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. The ADG509FBRWZ is notable for its fault protection capabilities, allowing it to withstand continuous overvoltage inputs from -40 V to +55 V, even when power supplies are off.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Number of Channels | 4 differential channels | |
| On-Resistance (RON) | 270 Ω (typical) | VDD = +15 V, VSS = -15 V, GND = 0 V |
| Switching Time | Fast switching times | |
| Enable Input (EN) | Active high | |
| Address Lines | 2-bit binary (A0, A1) | |
| Package Type | 16-Lead SOIC Wide | |
| Operating Temperature Range | -40°C to +85°C | |
| Maximum Input Voltage | -40 V to +55 V | Irrespective of power supplies |
| Leakage Current (Off) | Few nanoamperes | During fault conditions with power supplies off |
Key Features
- Fault Protection: The device can withstand continuous overvoltage inputs from -40 V to +55 V, even when power supplies are off.
- Low On-Resistance (RON): Typical RON of 270 Ω, ensuring minimal signal attenuation.
- Fast Switching Times: Quick transition times to minimize signal delay and distortion.
- Break-Before-Make Switching: 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.
- Enable Input (EN): Allows the device to be enabled or disabled, with all channels switched off when disabled.
Applications
The ADG509FBRWZ is suitable for various applications requiring reliable and fault-tolerant analog signal switching. 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 fault tolerance in harsh environments.
- Test and Measurement Equipment: To switch between multiple analog signals in test and measurement setups.
Q & A
- What is the number of differential channels in the ADG509FBRWZ?
The ADG509FBRWZ has four differential channels.
- What is the typical on-resistance (RON) of the ADG509FBRWZ?
The typical on-resistance is 270 Ω.
- How does the ADG509FBRWZ protect against overvoltages?
The device can withstand continuous overvoltage inputs from -40 V to +55 V, even when power supplies are off, using a series n-channel, p-channel, n-channel MOSFET structure.
- What is the purpose of the enable (EN) input on the ADG509FBRWZ?
The enable input allows the device to be enabled or disabled, with all channels switched off when disabled.
- What is the package type of the ADG509FBRWZ?
The package type is 16-Lead SOIC Wide.
- What are the operating temperature ranges for the ADG509FBRWZ?
The operating temperature range is -40°C to +85°C.
- How does the ADG509FBRWZ prevent latch-up?
The device uses trench isolation to separate the p and n-channel MOSFETs, preventing latch-up.
- What is the leakage current during fault conditions with power supplies off?
The leakage current is limited to a few nanoamperes.
- What type of switching does the ADG509FBRWZ use?
The device uses break-before-make switching to protect against momentary shorting.
- What are some typical applications for the ADG509FBRWZ?
Typical applications include industrial automation, medical devices, aerospace and defense, and test and measurement equipment.
