Overview
The ADG409BR, manufactured by Analog Devices Inc., is a high-performance CMOS analog multiplexer. This device is part of the ADG408/ADG409 series, which are monolithic CMOS analog multiplexers. The ADG409 specifically switches one of four differential inputs to a common differential output, controlled by 2-bit binary address lines A0 and A1. It features an enable input (EN) that allows the device to be enabled or disabled, with all channels switched off when disabled. The ADG409 is designed on an enhanced LC2MOS process, offering low power dissipation, high switching speed, and low on-resistance.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Number of Channels | 4 differential channels | |
| Address Lines | 2-bit (A0, A1) | |
| Enable Input (EN) | Active High | |
| Input Signal Range | Extends to the supply rails | |
| On Resistance (RON) | Typically 100 ohms | VS = VD = ±10 V |
| Power Supply Range | Single supply: 5 V to 12 V, Dual supply: ±5 V to ±15 V | |
| Operating Temperature Range | –40°C to +85°C (B Version), –55°C to +125°C (T Version) | |
| Transition Time | Typically 130 ns | RL = 300 Ω, CL = 35 pF |
| Charge Injection | Typically 20 pC | VS = 0 V, RS = 0 Ω, CL = 10 nF |
| Off Isolation | Typically –75 dB | RL = 1 kΩ, f = 100 kHz, VEN = 0 V |
Key Features
- Extended Signal Range: The signal range extends to the supply rails, making it versatile for various applications.
- Low Power Dissipation: Designed to consume low power, making it suitable for battery-powered systems and other low-power applications.
- Low RON: Low on-resistance ensures minimal signal degradation and high fidelity of the switched signals.
- Single-Supply Operation: Can operate from a single rail power supply, which is convenient for applications with unipolar analog signals.
- Break-Before-Make Switching: Prevents momentary shorting when switching channels, ensuring reliable operation.
- Low Charge Injection: Minimizes transients when switching digital inputs, reducing noise and distortion.
Applications
- Automatic Test Equipment: Ideal for switching multiple signals in automated testing environments.
- Data Acquisition Systems: Suitable for multiplexing analog signals in data acquisition systems.
- Battery-Powered Systems: Low power consumption makes it a good fit for battery-powered devices.
- Sample-and-Hold Systems: Can be used to switch signals in sample-and-hold circuits.
- Communication Systems: Useful in communication systems for signal routing and switching.
Q & A
- What is the ADG409BR used for?
The ADG409BR is a high-performance CMOS analog multiplexer used to switch one of four differential inputs to a common differential output.
- How many address lines does the ADG409BR have?
The ADG409BR has 2-bit binary address lines (A0 and A1).
- What is the typical on-resistance of the ADG409BR?
The typical on-resistance (RON) of the ADG409BR is around 100 ohms.
- What is the operating temperature range of the ADG409BR?
The operating temperature range is –40°C to +85°C for the B Version and –55°C to +125°C for the T Version.
- Can the ADG409BR operate on a single power supply?
- What is the transition time of the ADG409BR?
- How does the ADG409BR prevent momentary shorting when switching channels?
- What is the charge injection of the ADG409BR?
- What are some common applications of the ADG409BR?
- What is the off isolation of the ADG409BR?
