Overview
The AD7817ARZ from Analog Devices Inc. is a high-performance, low-power, 10-bit analog-to-digital converter (ADC) with an integrated temperature sensor. This device is designed to operate from a single 2.7 V to 5.5 V power supply, making it suitable for a wide range of applications. The AD7817ARZ features a successive approximation converter, an on-chip clock oscillator, and inherent track-and-hold functionality. It also includes an on-chip temperature sensor that can be accessed via Channel 0, providing accurate temperature measurements.
Key Specifications
| Parameter | Value | Unit | Test Conditions |
|---|---|---|---|
| Resolution | 10 | Bits | |
| Supply Voltage | 2.7 to 5.5 | V | |
| Operating Temperature Range | -55 to +125 | °C | |
| Temperature Sensor Accuracy | ±2.25 | °C | Ambient Temperature 25°C |
| Conversion Time | 9 | μs | |
| Sample Rate | Up to 100 kSPS | ||
| Power Consumption (at 1 kSPS) | 40 | μW | VDD = 2.7 V to 5.5 V |
| Package Type | 16-SOIC |
Key Features
- 10-bit resolution with no missing codes guaranteed
- On-chip temperature sensor with ±2.25°C accuracy
- Single 2.7 V to 5.5 V power supply operation
- Low power consumption, with automatic power-down feature
- SPI interface for easy integration
- Inherent track-and-hold functionality and on-chip clock oscillator
- Four single-ended analog input channels (VIN1 to VIN4)
- Overtemperature indicator (OTI) and busy signal for microcontroller integration
Applications
- Industrial and commercial equipment
- HVAC systems
- Automotive applications
- Consumer electronics
- Medical devices
Q & A
- What is the resolution of the AD7817ARZ?
The AD7817ARZ has a 10-bit resolution. - What is the operating temperature range of the AD7817ARZ?
The operating temperature range is -55°C to +125°C. - How accurate is the on-chip temperature sensor?
The on-chip temperature sensor has an accuracy of ±2.25°C. - What is the conversion time of the AD7817ARZ?
The conversion time is 9 μs. - What is the maximum sample rate of the AD7817ARZ?
The maximum sample rate is up to 100 kSPS. - How does the AD7817ARZ manage power consumption?
The AD7817ARZ features an automatic power-down mode to reduce power consumption, especially at slower throughput rates. - What type of interface does the AD7817ARZ use?
The AD7817ARZ uses an SPI interface for data communication. - How many analog input channels does the AD7817ARZ have?
The AD7817ARZ has four single-ended analog input channels (VIN1 to VIN4). - What is the purpose of the overtemperature indicator (OTI) in the AD7817ARZ?
The OTI is set logic low if the temperature reading exceeds a predetermined value, indicating an overtemperature condition. - What is the typical power consumption of the AD7817ARZ at 1 kSPS?
The typical power consumption at 1 kSPS is 40 μW.
