Overview
The AD7863BR-3REEL7 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 analog input channels, making it ideal for applications requiring precise and synchronized data acquisition.
The AD7863 operates from a single 5 V supply and features low power consumption, typically 70 mW, along with an automatic power-down mode that makes it suitable for battery-powered or portable devices. The device is fabricated using Analog Devices' linear compatible CMOS (LC2MOS) process, combining precision bipolar circuits with low power CMOS logic.
Key Specifications
| Parameter | Value | Notes |
|---|---|---|
| Resolution | 14 bits | |
| Sampling Rate | 175 kSPS | |
| Input Voltage Ranges | ±10 V (AD7863-10), ±2.5 V (AD7863-3), 0 V to 2.5 V (AD7863-2) | Dependent on model variant |
| Supply Voltage | 5 V ± 5% | |
| Power Consumption | Typically 70 mW | In normal operation mode |
| Conversion Time | 5.2 μs | From initiating conversion to data availability |
| Package Type | 28-Lead SOIC_W, SSOP | |
| Operating Temperature | –40°C to +85°C | |
| Interface | High speed parallel interface | For connection to microprocessors, microcontrollers, and digital signal processors |
Key Features
- Simultaneous Sampling and Conversion: The AD7863 allows for the simultaneous sampling and conversion of two analog input channels, preserving the relative phase information of the signals.
- High Speed Parallel Interface: Facilitates easy connection to microprocessors, microcontrollers, and digital signal processors.
- Low Power Consumption: Typical power consumption of 70 mW, with an automatic power-down mode for reduced power in idle states.
- Input Overvoltage Protection: The analog inputs are protected against overvoltage conditions up to ±17 V, ±7 V, or +7 V, depending on the model variant.
- Single Supply Operation: Operates from a single 5 V supply.
- Dual ADC Functions: Each ADC has a two-channel input multiplexer, allowing for flexible input configurations.
Applications
- Industrial Automation: Suitable for data acquisition systems in industrial environments where synchronized sampling is crucial.
- Medical Devices: Used in medical equipment requiring precise and simultaneous measurement of multiple analog signals.
- Aerospace and Defense: Ideal for applications in aerospace and defense where high accuracy and reliability are essential.
- Portable and Battery-Powered Devices: The low power consumption and automatic power-down mode make it suitable for battery-powered devices.
- Test and Measurement Equipment: Used in various test and measurement instruments where high-speed data acquisition is necessary.
Q & A
- What is the resolution of the AD7863 ADC?
The AD7863 has a resolution of 14 bits.
- What are the input voltage ranges for the AD7863?
The input voltage ranges are ±10 V (AD7863-10), ±2.5 V (AD7863-3), and 0 V to 2.5 V (AD7863-2), depending on the model variant.
- How much power does the AD7863 typically consume?
The AD7863 typically consumes 70 mW of power.
- What is the conversion time of the AD7863?
The conversion time is 5.2 μs from initiating conversion to data availability.
- Does the AD7863 have overvoltage protection on its analog inputs?
- What type of interface does the AD7863 use?
The AD7863 uses a high speed parallel interface.
- What are the operating temperature ranges for the AD7863?
The operating temperature range is –40°C to +85°C.
- What package types are available for the AD7863?
The AD7863 is available in 28-Lead SOIC_W and SSOP packages.
- Does the AD7863 support simultaneous sampling of multiple channels?
- Is the AD7863 suitable for battery-powered devices?
