Overview
The ADG731BSU, manufactured by Analog Devices Inc., is a monolithic, CMOS, 32-channel analog multiplexer. It features a serially controlled 3-wire interface compatible with SPI, QSPI, MICROWIRE, and some DSP interface standards. This multiplexer is designed to switch one of 32 inputs (S1–S32) to a common output, D, making it versatile for various applications. The ADG731 operates from a single supply of 1.8 V to 5.5 V or a ±2.5 V dual supply, ensuring wide compatibility and low power dissipation.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage Range | 1.8 V to 5.5 V, ±2.5 V | V |
| Number of Channels | 32 | - |
| On Resistance | 3.5 Ω (typ) | Ω |
| On Resistance Flatness | 0.5 Ω (typ) | Ω |
| Switching Time | 42 ns (typ), 62 ns (max) | ns |
| Break-Before-Make Time Delay | 30 ns (typ), 1 ns (min) | ns |
| Charge Injection | 5 pC (typ) | pC |
| Input High Voltage | 2.4 V (min) | V |
| Input Low Voltage | 0.8 V (max) | V |
| Package Type | 48-Lead TQFP or LFCSP | - |
Key Features
- Serial Interface: 3-wire SPI compatible interface, also compatible with QSPI, MICROWIRE, and some DSP interface standards.
- Low On Resistance: Approximately 3.5 Ω with low on resistance flatness of 0.5 Ω.
- High Switching Speed: Switching times as low as 42 ns.
- Break-Before-Make Switching: Prevents momentary shorting when switching channels.
- Rail-to-Rail Operation: Input signal range extends to the supplies.
- Low Power Dissipation: Designed on an enhanced submicron process for low power consumption.
- Power-On Reset: Internal shift register contains all zeros and all switches are in the OFF state on power-up.
Applications
- Optical Applications: Suitable for optical systems due to its high precision and low noise characteristics.
- Data Acquisition Systems: Ideal for data acquisition due to its fast switching times and low on resistance.
- Communication Systems: Used in communication systems for signal routing and switching.
- Relay Replacement: Can replace mechanical relays in many applications.
- Audio and Video Switching: Suitable for audio and video signal switching due to its low distortion and high isolation.
- Battery-Powered Systems: Low power consumption makes it suitable for battery-powered devices.
- Medical Instrumentation: Used in medical devices due to its high reliability and precision.
- Automatic Test Equipment: Ideal for test and measurement applications).
Q & A
- What is the supply voltage range of the ADG731BSU?
The ADG731BSU operates from a single supply of 1.8 V to 5.5 V or a ±2.5 V dual supply.
- How many channels does the ADG731BSU have?
The ADG731BSU is a 32-channel analog multiplexer.
- What is the typical on resistance of the ADG731BSU?
The typical on resistance is approximately 3.5 Ω.
- What is the switching time of the ADG731BSU?
The switching time is typically 42 ns, with a maximum of 62 ns.
- Does the ADG731BSU have break-before-make switching?
- What are the package options for the ADG731BSU?
The ADG731BSU is available in either a 48-lead TQFP or LFCSP package.
- Is the ADG731BSU compatible with SPI interfaces?
- What are some common applications of the ADG731BSU?
- Does the ADG731BSU have power-on reset functionality?
- What is the charge injection of the ADG731BSU?
