DG509ADY+

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Modern analog circuitry often requires the use of integrated analog multiplexers, demultiplexers, and switches to interface different analog signals on a common bus with increasing speeds. The DG509ADY+ is a low voltage, low power complementary metal-oxide-semiconductor (CMOS) 8-channel multiplexer/demultiplexer/analog switch. It is capable of providing an ultra-low supply current level and high bandwidth making it an ideal choice for applications including multiplexers, analog signal switching, and signal routing when low power operation and cost are critical.

Technical specifications

The DG509ADY+ is an 8-channel CMOS analog switch with a low power consumption and a high bandwidth, featuring low \Vcc max specifications and an integrated termination resistor. The device operates over a wide operating voltage of 2.0V to 6.0V. It also features low on resistance of 55Ω and off leakage current of less than 0.1nA. It has a low power consumption of 0.9mW/channel and high voltage isolation of 20V DC.

The DG509ADY+ is rated to operate over an extreme temperature range of -40°C to +85°C, making it particularly suitable for automotive, medical and industrial applications that are operated over a wide temperature range. It is available in a QFN package and is RoHS compliant.

Application fields

The wide operating voltage range, low power consumption and high voltage isolation features of the DG509ADY+ make it well-suited for a variety of analog signal switching applications. Some applications include multiplexing and demultiplexing sensors, routing audio signals, ADC/DACs operation, and automotive audio switching. The device is ideal for applications such as video routing and switching, mobile device audio, and power supply monitoring.

The low switching delay and low glitch enable the DG509ADY+ to provide high quality and fast direct analog signal routing. In addition, it can be used in battery-powered applications as a low power analog switch due to its low power consumption. It is also suitable for use in medical systems to switch between complex analog signals.

Working principle

The DG509ADY+ works on a parallel bus of 8 channels and a single control path, both of which allow simple implementation, as well as high-speed operations. The control path is connected to the CMOS inputs and is used to select which channels are active and which are disabled. When a channel is selected, the internal switches are enabled and the voltage on the selected channel is passed through to the output. The asynchronous disable bit allows the user to manually disable all channels in order to save power or avoid noise on the analog bus.

Each DG509ADY+ channel features an integrated termination resistor, allowing high integration and simplifying the design. Each channel also features low on resistance and low off leakage current, allowing for precise analog signal switching and routing. In addition, the channel-to-channel isolation is also very high, which helps to avoid noise from one channel affecting another channel.

Conclusion

The DG509ADY+ is an ideal analog switch for applications requiring wide operating voltage, low power consumption and a high bandwidth. Its low power consumption, low on resistance and low off leakage current make it very suitable for a variety of applications, including multiplexers, analog signal switching, audio routing and power supply monitoring. It is available in a QFN package and is RoHS compliant, making it environmentally friendly as well as reliably efficient.

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