Overview
The ADG774BRQ, produced by Analog Devices Inc., is a monolithic CMOS device that integrates four 2:1 multiplexer/demultiplexers with high impedance outputs. This device is designed to operate on a single 3.3 V or 5 V supply and is TTL logic compatible. The CMOS process ensures low power dissipation while providing high switching speed and low on-resistance. The ADG774BRQ is suitable for a wide range of applications, including USB 1.1 signal switching, fast Ethernet, audio, and video signal switching, due to its high bandwidth and low distortion characteristics.
Key Specifications
| Parameter | Typical Value | Maximum Value | Unit | Test Conditions |
|---|---|---|---|---|
| Analog Signal Range | 0 to 5 V | V | ||
| On Resistance (RON) | 2.2 Ω | 4 Ω | Ω | VD = 0 V to 1 V, IS = −10 mA |
| On Resistance Match Between Channels (∆RON) | 0.15 Ω | 0.5 Ω | Ω | VD = 0 V to 1 V, IS = −10 mA |
| On Resistance Flatness (RFLAT(ON)) | 0.3 Ω | 0.6 Ω | Ω | VD = 0 V to 1 V, IS = −10 mA |
| Bandwidth (-3 dB) | 240 MHz (ADG774), 400 MHz (ADG774A) | MHz | RL = 50 Ω | |
| Distortion | 0.5% (ADG774), 0.3% (ADG774A) | % | RL = 100 Ω | |
| Switching Times (tON, tOFF) | tON = 7 ns, tOFF = 4 ns | ns | CL = 35 pF, RL = 50 Ω | |
| Operating Temperature Range | -40°C to +125°C (ADG774), -40°C to +85°C (ADG774A B version) | °C | ||
| Package | 16-SSOP (0.154", 3.90mm Width) |
Key Features
- Low insertion loss and on-resistance: 2.2 Ω typical.
- Wide bandwidth: greater than 200 MHz (ADG774), >400 MHz (ADG774A).
- Ultralow power dissipation: 1 nA typical quiescent supply current.
- Fast switching times: tON = 7 ns, tOFF = 4 ns.
- Break-before-make switching action to prevent channel shorting.
- Low leakage over temperature.
- Extended signal range: fully extends to the supply rails.
- Low distortion: typically 0.5% (ADG774), 0.3% (ADG774A).
- TTL/CMOS compatible logic inputs.
Applications
- USB 1.1 signal switching circuits
- Cell phones and PDAs
- Battery-powered systems
- Communications systems
- Data acquisition systems
- Token Ring 4 Mbps/16 Mbps
- Audio and video switching
- Relay replacement
Q & A
- What is the typical on-resistance of the ADG774?
The typical on-resistance of the ADG774 is 2.2 Ω.
- What is the bandwidth of the ADG774?
The bandwidth of the ADG774 is greater than 200 MHz, and for the ADG774A, it is greater than 400 MHz.
- What are the operating temperature ranges for the ADG774 and ADG774A?
The ADG774 operates from -40°C to +125°C, while the ADG774A B version operates from -40°C to +85°C.
- What is the typical distortion of the ADG774 and ADG774A?
The typical distortion is 0.5% for the ADG774 and 0.3% for the ADG774A.
- What is the switching time of the ADG774?
The switching times are tON = 7 ns and tOFF = 4 ns.
- Is the ADG774 TTL/CMOS compatible?
Yes, the ADG774 is TTL/CMOS compatible.
- What type of package is the ADG774 available in?
The ADG774 is available in a 16-SSOP package.
- What are some common applications of the ADG774?
Common applications include USB 1.1 signal switching, cell phones, PDAs, battery-powered systems, and audio/video switching.
- Does the ADG774 exhibit break-before-make switching action?
Yes, the ADG774 exhibits break-before-make switching action to prevent channel shorting.
- What is the quiescent supply current of the ADG774?
The quiescent supply current is typically 1 nA.
