Overview
The AD7863BR-3REEL, produced by Analog Devices Inc., is a high-performance, simultaneous sampling dual 14-bit analog-to-digital converter (ADC). This component is designed for applications requiring precise and simultaneous conversion of two analog channels. The AD7863 is fabricated using Analog Devices' linear compatible CMOS (LC2MOS) process, combining precision bipolar circuits with low power CMOS logic. It operates from a single 5 V supply and is available in 28-lead SOIC_W and SSOP packages, making it suitable for a variety of industrial and signal processing applications.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Bits | 14 |
| Sampling Rate | 175 kSPS |
| Analog Input Range | ±10 V (AD7863-10), ±2.5 V (AD7863-3), 0 V to 2.5 V (AD7863-2) |
| Supply Voltage | 5 V |
| Power Consumption | 70 mW typical |
| Operating Temperature | –40°C to +85°C |
| Package Type | 28-Lead SOIC_W, SSOP |
| Conversion Time | 5.2 μs after initiating conversion |
| Input Resistance | Typically 9 kΩ (AD7863-10), 3 kΩ (AD7863-3) |
Key Features
- Simultaneous sampling and conversion of two channels, preserving relative phase information.
- Automatic power-down mode for reduced power consumption, ideal for battery-powered or portable applications.
- High speed parallel interface for easy connection to microprocessors, microcontrollers, and digital signal processors.
- Tight aperture delay matching between the two input sample and hold amplifiers.
- Overvoltage protection on analog inputs up to ±17 V, ±7 V, or +7 V depending on the model.
- Internal clock oscillator circuit for generating the conversion clock.
Applications
The AD7863 is suitable for various applications, including industrial control systems, medical devices, and signal processing equipment. Its simultaneous sampling capability makes it particularly useful in applications where phase information between two channels is critical, such as in audio processing, vibration analysis, and other dual-channel measurement systems.
Q & A
- What is the sampling rate of the AD7863?
The AD7863 has a sampling rate of 175 kSPS. - How many bits does the AD7863 ADC have?
The AD7863 is a 14-bit ADC. - What are the available analog input ranges for the AD7863?
The AD7863 offers analog input ranges of ±10 V, ±2.5 V, and 0 V to 2.5 V depending on the model. - What is the supply voltage for the AD7863?
The AD7863 operates from a single 5 V supply. - What is the typical power consumption of the AD7863?
The typical power consumption is 70 mW. - What are the operating temperature ranges for the AD7863?
The operating temperature range is –40°C to +85°C. - What types of packages are available for the AD7863?
The AD7863 is available in 28-Lead SOIC_W and SSOP packages. - How long does it take for the AD7863 to complete a conversion after initiation?
The conversion result is available 5.2 μs after initiating conversion. - Does the AD7863 have overvoltage protection on its analog inputs?
Yes, the AD7863 has overvoltage protection on its analog inputs. - What is the purpose of the automatic power-down mode in the AD7863?
The automatic power-down mode reduces power consumption by putting the part into sleep after the end of conversion, making it ideal for battery-powered or portable applications.
