Overview
The ADG729BRUZ, produced by Analog Devices Inc., is a CMOS analog matrix switch with a serially controlled 2-wire interface. This device is a dual 4-channel matrix switch, making it versatile for various switching configurations. It operates equally well as a multiplexer, demultiplexer, or switch array. The input signal range extends to the supplies, and the on-resistance is closely matched between switches and very flat over the full signal range.
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, VD = 1 V/4.5 V |
| Continuous Current D, ADG729 | 30 mA | mA | ||
| Operating Temperature Range | –40°C to +85°C | °C | Industrial (B Version) | |
| Storage Temperature Range | –65°C to +150°C | °C | ||
| Junction Temperature | °C | See datasheet for specific details |
Key Features
- Serially Controlled 2-Wire Interface: Compatible with the I2C™ interface standard, allowing for easy integration into various systems.
- Dual 4-Channel Matrix Switch: The ADG729BRUZ can operate as a multiplexer, demultiplexer, or switch array, offering flexibility in different applications.
- Low On-Resistance: With a typical on-resistance of 2.5 Ω and a maximum of 4.5 Ω, ensuring minimal signal degradation.
- Matched On-Resistance: On-resistance is closely matched between switches, and very flat over the full signal range, enhancing performance consistency.
- External Address Pins: Two external address pins (A0 and A1) allow the user to set the 2 LSBs of the 7-bit slave address, enabling multiple devices to be connected to the same bus.
- Break-Before-Make Switching: Prevents momentary shorting when switching channels, ensuring reliable operation.
- 16-Lead TSSOP Package: Compact packaging suitable for a variety of applications.
Applications
- Signal Routing and Switching: Ideal for applications requiring the routing and switching of analog signals in a controlled manner.
- Audio and Video Switching: Suitable for audio and video signal switching due to its low on-resistance and matched characteristics.
- Medical and Industrial Equipment: Used in medical and industrial equipment where precise and reliable signal switching is necessary.
- Automotive Systems: Can be used in automotive systems that require robust and reliable analog signal switching.
Q & A
- What is the ADG729BRUZ?
The ADG729BRUZ is a CMOS analog matrix switch with a serially controlled 2-wire interface, designed as a dual 4-channel matrix switch.
- What interface does the ADG729BRUZ use?
The ADG729BRUZ uses a 2-wire serial interface compatible with the I2C™ interface standard.
- What is the typical on-resistance of the ADG729BRUZ?
The typical on-resistance is 2.5 Ω, with a maximum of 4.5 Ω.
- How are the channels controlled in the ADG729BRUZ?
Each channel is controlled by one bit of an 8-bit word, allowing for flexible configuration of the switches.
- What is the operating temperature range of the ADG729BRUZ?
The operating temperature range is –40°C to +85°C for the industrial (B Version).
- What package type is the ADG729BRUZ available in?
The ADG729BRUZ is available in a 16-lead TSSOP package.
- Can multiple ADG729BRUZ devices be connected to the same bus?
Yes, four devices can be connected to the same bus using the external address pins (A0 and A1) to set the 2 LSBs of the 7-bit slave address.
- What is the purpose of the RESET pin on the ADG728, and is it applicable to the ADG729?
The RESET pin on the ADG728 should be tied high if not in use. The ADG729 does not have a RESET pin.
- How does the ADG729BRUZ prevent momentary shorting when switching channels?
The ADG729BRUZ features break-before-make switching action to prevent momentary shorting when switching channels.
- What are some common applications of the ADG729BRUZ?
Common applications include signal routing and switching, audio and video switching, medical and industrial equipment, and automotive systems.
