Overview
The AD7817ARUZ, produced by Analog Devices Inc., is a 10-bit, single- and 4-channel analog-to-digital converter (ADC) with an integrated temperature sensor. This device operates from a single 2.7 V to 5.5 V power supply, making it versatile for various applications. The AD7817ARUZ features a successive approximation converter based on a capacitor digital-to-analog converter (DAC), an on-chip clock oscillator, and inherent track-and-hold functionality. Additionally, it includes an on-chip reference voltage of 2.5 V and an automatic power-down feature to enhance power efficiency at slower throughput rates.
Key Specifications
| Parameter | Specification |
|---|---|
| Resolution | 10 bits |
| Number of Channels | 4 (AD7818), 1 (AD7817) |
| Power Supply Voltage | 2.7 V to 5.5 V |
| Conversion Time | 9 μs |
| Sampling Rate | Up to 100 kSPS |
| Temperature Sensor Accuracy | ±2°C |
| Interface | SPI, Serial |
| Package Type | 16-TSSOP (0.173, 4.40mm Width) |
| Operating Temperature Range | -40°C to 85°C |
| Integral Nonlinearity (INL) | ±1 LSB |
| Differential Nonlinearity (DNL) | ±1 LSB |
Key Features
- On-chip Temperature Sensor: The AD7817ARUZ includes an on-chip temperature sensor with an accuracy of ±2°C, accessible via Channel 0.
- Successive Approximation Converter: Utilizes a capacitor DAC for high-speed conversions.
- On-chip Clock Oscillator: Reduces the need for external clock sources.
- Track-and-Hold Functionality: Inherent track-and-hold circuitry ensures accurate sampling of analog signals.
- Automatic Power-Down: Enhances power efficiency at slower throughput rates, achieving 40 μW at 1 kSPS.
- On-chip Reference Voltage: A 2.5 V reference voltage is available, with the option to use an external reference if needed.
Applications
- Industrial Automation: Suitable for monitoring and control systems due to its integrated temperature sensor and multiple analog input channels.
- Medical Devices: Can be used in medical equipment requiring precise analog-to-digital conversion and temperature monitoring.
- Aerospace and Defense: Applicable in systems requiring high reliability and precision in harsh environments.
- Automotive Systems: Useful in automotive applications that need robust and accurate analog-to-digital conversion and temperature sensing.
Q & A
- What is the resolution of the AD7817ARUZ ADC?
The AD7817ARUZ has a resolution of 10 bits.
- How many analog input channels does the AD7817ARUZ have?
The AD7817 has one analog input channel, while the AD7818 has four channels.
- What is the operating voltage range of the AD7817ARUZ?
The device operates from a single 2.7 V to 5.5 V power supply.
- What is the conversion time of the AD7817ARUZ?
The conversion time is 9 μs.
- Does the AD7817ARUZ have an on-chip temperature sensor?
Yes, it includes an on-chip temperature sensor with an accuracy of ±2°C.
- What interface does the AD7817ARUZ use?
The device uses an SPI (Serial Peripheral Interface) for communication.
- What is the package type of the AD7817ARUZ?
The device is available in a 16-TSSOP package.
- What is the operating temperature range of the AD7817ARUZ?
The operating temperature range is -40°C to 85°C.
- Does the AD7817ARUZ have automatic power-down feature?
Yes, it has an automatic power-down feature to enhance power efficiency at slower throughput rates.
- Can the AD7817ARUZ use an external reference voltage?
Yes, an external 2.5 V reference can be connected, and the internal reference will shut down if an external reference is used.
