Overview
The ADG408BR, produced by Analog Devices Inc., is a high-performance 8:1 analog multiplexer. This monolithic CMOS device is designed on an enhanced LC2MOS process, which offers low power dissipation, high switching speed, and low on-resistance. The ADG408BR switches one of eight inputs to a common output based on the 3-bit binary address lines A0, A1, and A2. An enable (EN) input allows the device to be enabled or disabled, with all channels switched off when disabled.
The device is suitable for a wide range of applications due to its extended signal range, which can operate with single or dual supply voltages up to ±15V. It is an improved replacement for the DG408 analog multiplexer, offering better performance and reliability.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of Channels | 8 | |
| On-State Resistance (Max) | 100 | Ω |
| Channel-to-Channel Matching (ΔRon) (Max) | 15 | Ω |
| Voltage - Supply, Single (V+) | 12 | V |
| Voltage - Supply, Dual (V±) | ±15 | V |
| Charge Injection | 20 | pC |
| Channel Capacitance (CS(off), CD(off)) | 11 pF, 40 pF | |
| Current - Leakage (IS(off)) (Max) | 500 | pA |
| Crosstalk | -85 dB @ 100 kHz | |
| Operating Temperature Range (Industrial) | -40°C to +85°C | |
| Operating Temperature Range (Extended) | -55°C to +125°C | |
| Switching Time (tON, tOFF) | 140 ns, 60 ns |
Key Features
- Precision Analog Signal Management: The ADG408BR offers precise control over analog signals, reducing distortion and propagation delay.
- Low Power Dissipation: Designed with an enhanced LC2MOS process, the device consumes very low power, making it suitable for battery-powered systems.
- Low On-Resistance: With a maximum on-resistance of 100 Ω, the device ensures minimal signal loss.
- Break-Before-Make Switching: Prevents momentary shorting when switching channels, ensuring reliable operation.
- Low Charge Injection: Minimizes transients when switching digital inputs, ensuring stable signal handling.
- Single or Dual Supply Operation: Can operate with single supplies as low as 5 V or dual supplies up to ±15 V.
- Excellent Crosstalk Isolation: Provides -85 dB crosstalk isolation at 100 kHz, ensuring minimal interference between channels.
Applications
- Audio and Video Routing: Ideal for routing audio and video signals in various multimedia systems.
- Automatic Test Equipment: Used in test and measurement equipment due to its high precision and reliability.
- Data Acquisition Systems: Suitable for data acquisition systems requiring accurate and fast analog signal switching.
- Battery-Powered Systems: Low power consumption makes it a good choice for battery-powered devices.
- Sample-and-Hold Systems: Used in sample-and-hold circuits to manage analog signals precisely.
- Communication Systems: Applied in communication systems for reliable and efficient signal management.
Q & A
- What is the ADG408BR used for?
The ADG408BR is an 8:1 analog multiplexer used to switch one of eight inputs to a common output, making it suitable for various applications such as audio and video routing, automatic test equipment, and data acquisition systems.
- What is the maximum on-resistance of the ADG408BR?
The maximum on-resistance of the ADG408BR is 100 Ω.
- What are the supply voltage options for the ADG408BR?
The ADG408BR can operate with single supplies as low as 5 V or dual supplies up to ±15 V.
- What is the switching time of the ADG408BR?
The switching times for the ADG408BR are typically 140 ns for tON and 60 ns for tOFF.
- Does the ADG408BR have break-before-make switching action?
Yes, the ADG408BR exhibits break-before-make switching action, preventing momentary shorting when switching channels.
- What is the charge injection of the ADG408BR?
The charge injection of the ADG408BR is typically 20 pC.
- What is the crosstalk isolation of the ADG408BR?
The ADG408BR provides -85 dB crosstalk isolation at 100 kHz.
- What are the operating temperature ranges for the ADG408BR?
The operating temperature ranges for the ADG408BR are -40°C to +85°C for the industrial version and -55°C to +125°C for the extended version.
- Is the ADG408BR suitable for battery-powered systems?
Yes, the ADG408BR is suitable for battery-powered systems due to its low power dissipation.
- What is the typical current leakage of the ADG408BR when off?
The typical current leakage of the ADG408BR when off is 500 pA.
