Overview
The ADG728BRUZ, manufactured by Analog Devices Inc., is a CMOS analog matrix switch with a serially controlled 2-wire interface. This device is an 8-channel matrix switch, capable of operating as a multiplexer, demultiplexer, or switch array. It features closely matched on resistance between switches and a flat on resistance over the full signal range, which extends to the supplies. The ADG728 utilizes a 2-wire serial interface compatible with the I2C™ interface standard and includes two external address pins (A0 and A1) for user-configurable addressing. This allows up to four devices to be connected to the same bus.
Key Specifications
| Parameter | Typical Value | Maximum Value | Unit | Test Conditions/Comments |
|---|---|---|---|---|
| Analog Signal Range | 0 V to VDD | V | ||
| On Resistance (RON) | 2.5 Ω | 4.5 Ω | Ω | VS = 0 V to VDD, IS = 10 mA |
| On-Resistance Match Between Channels (∆RON) | 0.4 Ω | 0.8 Ω | Ω | VS = 0 V to VDD, IS = 10 mA |
| On-Resistance Flatness (RFLAT(ON)) | 0.75 Ω | 1.2 Ω | Ω | VS = 0 V to VDD, IS = 10 mA |
| Source OFF Leakage (IS(OFF)) | ±0.01 nA | ±0.1 nA | nA | VDD = 5.5 V, VD = 4.5 V/1 V, VS = 1 V/4.5 V |
| Drain OFF Leakage (ID(OFF)) | ±0.01 nA | ±0.1 nA | nA | VDD = 5.5 V, VD = 4.5 V/1 V, VS = 1 V/4.5 V |
| Operating Temperature Range | °C | –40°C to +85°C (Industrial) | ||
| Storage Temperature Range | °C | –65°C to +150°C | ||
| Package | 16-Lead TSSOP |
Key Features
- 8-channel matrix switch with serially controlled 2-wire interface compatible with I2C™ standard.
- Closely matched on resistance between switches and very flat over the full signal range.
- Input signal range extends to the supplies.
- Two external address pins (A0 and A1) for user-configurable addressing.
- Up to four devices can be connected to the same bus.
- RESET pin that should be tied high if not in use.
- Each channel controlled by one bit of an 8-bit word, allowing various configurations.
- Break-before-make switching action to prevent momentary shorting when switching channels.
- Low power consumption: IDD = 10 µA (typ), 20 µA (max) at VDD = 5.5 V.
Applications
- Multiplexing and demultiplexing in various signal processing systems.
- Switch arrays in audio and video signal routing.
- Automotive and industrial control systems requiring low power and high reliability.
- Medical devices where precise signal switching is necessary.
- Telecommunication systems for signal routing and switching.
Q & A
- What is the ADG728BRUZ?
The ADG728BRUZ is a CMOS analog matrix switch with a serially controlled 2-wire interface, manufactured by Analog Devices Inc.
- How many channels does the ADG728BRUZ have?
The ADG728BRUZ is an 8-channel matrix switch.
- What is the on resistance of the ADG728BRUZ?
The on resistance (RON) is typically 2.5 Ω and maximally 4.5 Ω at VDD = 5 V and IS = 10 mA.
- What is the operating temperature range of the ADG728BRUZ?
The operating temperature range is –40°C to +85°C (Industrial).
- What package type is the ADG728BRUZ available in?
The ADG728BRUZ is available in a 16-Lead TSSOP package.
- How is the ADG728BRUZ controlled?
The ADG728BRUZ is controlled via a 2-wire serial interface compatible with the I2C™ standard, with each channel controlled by one bit of an 8-bit word.
- Can multiple ADG728BRUZ devices be connected to the same bus?
Yes, up to four devices can be connected to the same bus using the external address pins (A0 and A1).
- What is the power consumption of the ADG728BRUZ?
The power consumption is typically 10 µA and maximally 20 µA at VDD = 5.5 V.
- What kind of switching action does the ADG728BRUZ exhibit?
The ADG728BRUZ exhibits break-before-make switching action to prevent momentary shorting when switching channels.
- In what applications is the ADG728BRUZ commonly used?
The ADG728BRUZ is commonly used in multiplexing and demultiplexing, switch arrays, automotive and industrial control systems, medical devices, and telecommunication systems.
