Overview
The AD7863ARSZ-3REEL7 is a high-speed, low-power, 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 phase information between signals.
The AD7863 operates from a single 5 V supply and consumes 70 mW typical power, with an automatic power-down mode that makes it suitable for battery-powered or portable applications. It features a high-speed parallel interface for easy connection to microprocessors, microcontrollers, and digital signal processors.
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) |
| Overvoltage Protection | Up to ±7 V (AD7863-3) |
| Supply Voltage | Single 5 V |
| Power Consumption | Typical 70 mW |
| Operating Temperature | –40°C to +85°C |
| Package Type | 28-Lead SSOP |
| Interface | High-speed parallel interface |
Key Features
- Simultaneous sampling and conversion of two analog input channels, preserving relative phase information.
- Contains two 5.2 μs successive approximation ADCs, two track/hold amplifiers, and an internal 2.5 V reference.
- Automatic power-down mode for low power consumption, ideal for battery-powered applications.
- High-speed parallel interface for easy connection to microprocessors, microcontrollers, and digital signal processors.
- Overvoltage protection on analog inputs up to ±7 V (AD7863-3).
- Fabricated in Analog Devices Inc. linear compatible CMOS (LC2MOS) process, combining precision bipolar circuits with low power CMOS logic.
Applications
- Battery-powered or portable devices due to its low power consumption and automatic power-down mode.
- Data acquisition systems requiring simultaneous sampling of multiple channels.
- Industrial control systems where precise phase information between signals is crucial.
- Medical devices that require high-speed and accurate analog-to-digital conversion.
- Aerospace and defense applications where reliability and precision are paramount.
Q & A
- What is the resolution of the AD7863ARSZ-3REEL7 ADC?
The AD7863ARSZ-3REEL7 has a resolution of 14 bits.
- What is the sampling rate of the AD7863ARSZ-3REEL7?
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 model is ±2.5 V.
- How much power does the AD7863 typically consume?
The AD7863 typically consumes 70 mW of power.
- What type of interface does the AD7863 use?
The AD7863 uses a high-speed parallel interface.
- What is the operating temperature range of the AD7863?
The operating temperature range is –40°C to +85°C.
- Does the AD7863 have overvoltage protection?
Yes, the AD7863 has overvoltage protection up to ±7 V for the AD7863-3 model.
- How many analog input channels does the AD7863 support?
The AD7863 supports four analog inputs grouped into two channels (A and B), each with two inputs.
- What is the conversion time for the AD7863?
The conversion result is available 5.2 μs after initiating conversion.
- What package type is the AD7863 available in?
The AD7863 is available in a 28-Lead SSOP package.
