Overview
The AD7863ARS-3 is a high-performance, dual 14-bit analog-to-digital converter (ADC) produced by Analog Devices Inc. This component is designed for simultaneous sampling and conversion of two channels, making it ideal for applications requiring precise and synchronized data acquisition. The AD7863 operates from a single 5 V supply, consumes 70 mW typical, and features an automatic power-down mode, which makes it suitable for battery-powered or portable applications.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 14-bit |
| Sampling Rate | 175 kSPS |
| Analog Input Range | ±2.5 V (AD7863-3) |
| Input Resistance | Typically 3 kΩ (AD7863-3) |
| Supply Voltage | 5 V |
| Power Consumption | 70 mW typical |
| Operating Temperature | –40°C to +85°C |
| Package Type | 28-Lead SSOP |
| Conversion Time | 5.2 μs |
| Overvoltage Protection | Up to ±7 V (AD7863-3) |
Key Features
- Simultaneous sampling and conversion of two channels, preserving relative phase information of the signals.
- Internal 2.5 V reference and high-speed parallel interface for easy connection to microprocessors, microcontrollers, and digital signal processors.
- Automatic power-down mode for reduced power consumption in battery-powered or portable applications.
- High-speed successive approximation ADCs with track-and-hold amplifiers.
- Overvoltage protection on analog inputs to prevent damage.
Applications
The AD7863ARS-3 is suitable for a variety of applications, including:
- Battery-powered and portable devices due to its low power consumption and automatic power-down mode.
- Data acquisition systems requiring simultaneous sampling of multiple channels.
- Industrial control and automation systems where precise and synchronized data acquisition is necessary.
- Medical devices and diagnostic equipment that require high accuracy and low noise.
Q & A
- What is the resolution of the AD7863ARS-3 ADC?
The AD7863ARS-3 has a resolution of 14 bits. - What is the sampling rate of the AD7863ARS-3?
The sampling rate is 175 kSPS. - What is the analog input range for the AD7863-3 model?
The analog input range for the AD7863-3 is ±2.5 V. - What is the typical input resistance for the AD7863-3?
The typical input resistance is 3 kΩ. - What is the supply voltage for the AD7863?
The supply voltage is 5 V. - How much power does the AD7863 typically consume?
The AD7863 typically consumes 70 mW. - What is the operating temperature range for the AD7863?
The operating temperature range is –40°C to +85°C. - What type of package does the AD7863 come in?
The AD7863 comes in a 28-Lead SSOP package. - How long does the conversion process take for the AD7863?
The conversion result is available 5.2 μs after initiating conversion. - Does the AD7863 have overvoltage protection?
Yes, the AD7863 has overvoltage protection up to ±7 V for the AD7863-3 model.
