Overview
The ADG444BR, produced by Analog Devices Inc., is a monolithic CMOS device that comprises four independently selectable single-pole single-throw (SPST) switches. Designed on an enhanced LC2MOS process, this device offers low power dissipation, high switching speed, and low on-resistance. Each switch conducts equally well in both directions when ON and has an input signal range that extends to the power supplies. The ADG444BR is particularly suited for applications requiring low distortion and high linearity, such as audio and video signal switching.
Key Specifications
| Parameter | Typical Value | Maximum Value | Unit | Test Conditions/Comments |
|---|---|---|---|---|
| Analog Signal Range | 0 to VDD | V | VDD = +12 V ± 10%, VSS = 0 V, VL = +5 V ± 10% (for ADG444) | |
| On Resistance (RON) | 70 Ω | 110 Ω | Ω | VD = +3 V, +8 V, IS = −5 mA |
| On Resistance Flatness (∆RON) | 4 Ω | Ω | VDD = 10.8 V | |
| Charge Injection | 6 pC | pC | Maximum | |
| Switching Time (tON/tOFF) | 150 ns / 100 ns | ns | Typical values | |
| Power Supply Range | VDD to VSS: 44 V | V | Absolute maximum ratings | |
| Operating Temperature Range | −40°C to +85°C | °C | Industrial (B Version) | |
| Package Type | 16-Lead SOIC |
Key Features
- Low On-Resistance and Flat On-Resistance Profile: Ensures good linearity and low distortion when switching audio and video signals.
- High Switching Speed: Suitable for high-speed applications such as video signal switching.
- Low Power Dissipation: Ultralow power consumption, ideal for battery-powered and portable instruments.
- Break-Before-Make Switching Action: Prevents signal distortion and is useful in multiplexer applications.
- Low Charge Injection: Minimizes transients when switching digital inputs.
- Latch-Up Proof: Ensures reliability and stability in operation.
Applications
- Audio and Video Switching: Ideal for applications requiring low distortion and high linearity.
- Automatic Test Equipment: High switching speed and low on-resistance make it suitable for test equipment.
- Precision Data Acquisition: Low charge injection and high linearity ensure accurate data acquisition.
- Battery-Powered Systems: Ultralow power dissipation makes it ideal for portable and battery-powered instruments.
- Sample-and-Hold Systems: Low distortion and high linearity are beneficial for sample-and-hold applications.
- Communication Systems: High switching speed and reliability make it suitable for communication systems.
Q & A
- What is the ADG444BR?
The ADG444BR is a monolithic CMOS device comprising four independently selectable SPST switches, designed on an enhanced LC2MOS process.
- What are the key features of the ADG444BR?
Key features include low on-resistance, high switching speed, low power dissipation, break-before-make switching action, and low charge injection.
- What is the typical on-resistance of the ADG444BR?
The typical on-resistance is 70 Ω.
- What is the maximum charge injection of the ADG444BR?
The maximum charge injection is 6 pC.
- What are the operating temperature ranges for the ADG444BR?
The operating temperature range is −40°C to +85°C for the industrial (B Version).
- What package types are available for the ADG444BR?
The ADG444BR is available in a 16-Lead SOIC package.
- What applications is the ADG444BR suitable for?
It is suitable for audio and video switching, automatic test equipment, precision data acquisition, battery-powered systems, sample-and-hold systems, and communication systems.
- How does the ADG444BR handle switching actions?
The ADG444BR exhibits break-before-make switching action, which prevents signal distortion and is useful in multiplexer applications.
- Is the ADG444BR latch-up proof?
Yes, the ADG444BR is latch-up proof, ensuring reliability and stability in operation.
- What is the logic control for turning on the switches in the ADG444BR?
The switches in the ADG444BR are turned on with a logic low on the appropriate control input.
