Overview
The ADG729BRU, produced by Analog Devices Inc., is a CMOS analog matrix switch that features a serially controlled 2-wire interface compatible with the I2C™ standard. This device is a dual 4-channel matrix switch, capable of operating as a multiplexer, demultiplexer, or switch array. The input signal range extends to the supply voltages, making it versatile for various signal handling applications. The ADG729BRU is housed in a 16-lead TSSOP package and is designed for low voltage operation, ranging from 2.7 V to 5.5 V.
Key Specifications
| Parameter | Value | Unit | Test Conditions/Comments |
|---|---|---|---|
| Analog Signal Range | 0 V to VDD | V | |
| On Resistance (RON) | 2.5 Ω (typ), 4.5 Ω (max) | Ω | VS = 0 V to VDD, IS = 10 mA |
| On-Resistance Match Between Channels (∆RON) | 0.4 Ω (typ), 0.8 Ω (max) | Ω | VS = 0 V to VDD, IS = 10 mA |
| On-Resistance Flatness (RFLAT(ON)) | 0.75 Ω (typ), 1.2 Ω (max) | Ω | VS = 0 V to VDD, IS = 10 mA |
| Source OFF Leakage (IS(OFF)) | ±0.01 nA (typ), ±0.1 nA (max) | 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 (typ), ±0.1 nA (max) | nA | VDD = 5.5 V, VD = 4.5 V/1 V, VD = 1 V/4.5 V |
| Continuous Current | 30 mA | mA | |
| Operating Temperature Range | –40°C to +85°C | °C | |
| Switch Time (Ton, Toff) | 95 ns (typ), 85 ns (typ) | ns | |
| Crosstalk | -75 dB @ 1 MHz | dB | |
| Charge Injection | 3 pC | pC | |
| Channel Capacitance (CS(off), CD(off)) | 13 pF, 42 pF | pF | |
| -3 dB Bandwidth | 100 MHz | MHz |
Key Features
- Serial Interface: Compatible with the I2C™ interface standard, allowing for easy integration into systems using a 2-wire serial bus.
- Addressing: Two external address pins (A0 and A1) enable setting the 2 LSBs of the 7-bit slave address, allowing multiple devices to be connected to the same bus.
- Switch Configuration: Each channel is controlled by one bit of an 8-bit word, enabling various configurations where all, any, or none of the channels can be on at any time.
- Low On-Resistance: On-resistance is closely matched between switches and very flat over the full signal range, ensuring minimal signal distortion.
- Break-Before-Make Switching: Prevents momentary shorting when switching channels, ensuring reliable operation.
- Low Voltage Operation: Operates from a single supply voltage ranging from 2.7 V to 5.5 V.
- Compact Packaging: Housed in a 16-lead TSSOP package, suitable for space-constrained applications.
Applications
- Signal Routing and Switching: Ideal for applications requiring the routing and switching of analog signals in a variety of configurations.
- Audio and Video Switching: Suitable for audio and video signal switching due to its low on-resistance and flat on-resistance over the full signal range.
- Medical and Industrial Equipment: Used in medical and industrial equipment where reliable and precise signal handling is crucial.
- Automotive Systems: Applicable in automotive systems that require robust and reliable signal switching under various environmental conditions.
- Telecommunications: Useful in telecommunications equipment for signal routing and switching applications.
Q & A
- What is the ADG729BRU?
The ADG729BRU is a CMOS analog matrix switch with a serially controlled 2-wire interface, designed for low voltage operation and housed in a 16-lead TSSOP package.
- What are the key features of the ADG729BRU?
Key features include a serial I2C™ interface, low on-resistance, break-before-make switching, and the ability to operate as a multiplexer, demultiplexer, or switch array.
- What is the operating voltage range of the ADG729BRU?
The ADG729BRU operates from a single supply voltage ranging from 2.7 V to 5.5 V.
- How many channels does the ADG729BRU have?
The ADG729BRU is a dual 4-channel matrix switch.
- What is the on-resistance of the ADG729BRU?
The on-resistance is typically 2.5 Ω and maximally 4.5 Ω.
- What is the switching time of the ADG729BRU?
The switch time (Ton, Toff) is typically 95 ns and 85 ns, respectively.
- Is the ADG729BRU RoHS compliant?
No, the ADG729BRU contains lead and is not RoHS compliant.
- What is the operating temperature range of the ADG729BRU?
The operating temperature range is –40°C to +85°C.
- How many devices can be connected to the same bus?
Four devices can be connected to the same bus using the external address pins (A0 and A1).
- What is the -3 dB bandwidth of the ADG729BRU?
The -3 dB bandwidth is 100 MHz.
