Overview
The AD7863ARZ, produced by Analog Devices Inc., is a high-speed, low-power, dual 14-bit analog-to-digital converter (ADC). This component operates from a single 5 V supply and is designed for simultaneous sampling and conversion of two channels. It features two successive approximation ADCs, two track-and-hold amplifiers, an internal 2.5 V reference, and a high-speed parallel interface. The AD7863 is fabricated using Analog Devices' linear compatible CMOS (LC2MOS) process, which combines precision bipolar circuits with low-power CMOS logic. This makes it ideal for applications requiring high accuracy and low power consumption, such as battery-powered or portable devices.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Bits | 14 |
| Sampling Rate | 175 kSPS |
| Number of Inputs | 4 (grouped into two channels: A and B) |
| Input Type | Single Ended |
| Data Interface | Parallel |
| Configuration | MUX-S/H-ADC |
| Architecture | Successive Approximation (SAR) |
| Reference Type | External, Internal |
| Voltage - Supply, Analog/Digital | 5 V |
| Conversion Time | 5.2 μs |
| Power Consumption | 70 mW (typical) |
| Operating Temperature Range | –40°C to +85°C |
| Package | 28-Lead SOIC_W, SSOP |
Key Features
- Simultaneous sampling and conversion of two channels, preserving relative phase information of the signals.
- High-speed parallel interface for easy connection to microprocessors, microcontrollers, and digital signal processors.
- Automatic power-down mode, ideal for battery-powered or portable applications.
- Overvoltage protection on analog inputs, allowing input voltages up to ±17 V, ±7 V, or +7 V without damage.
- Internal 2.5 V reference and two track-and-hold amplifiers.
- Dynamic performance specifications include harmonic distortion and signal-to-noise ratio.
Applications
The AD7863ARZ is suitable for a variety of applications that require high-speed, low-power analog-to-digital conversion. These include:
- Battery-powered and portable devices due to its low power consumption and automatic power-down mode.
- Industrial control systems where simultaneous sampling of multiple channels is necessary.
- Medical devices that require precise and fast analog-to-digital conversion.
- Aerospace and defense applications where high accuracy and reliability are critical.
- Data acquisition systems in various fields such as scientific research and testing equipment.
Q & A
- What is the sampling rate of the AD7863ARZ?
The AD7863ARZ has a sampling rate of 175 kSPS.
- How many analog inputs does the AD7863ARZ have?
The AD7863ARZ has four analog inputs grouped into two channels (A and B).
- What is the conversion time of the AD7863ARZ?
The conversion time is 5.2 μs.
- What type of data interface does the AD7863ARZ use?
The AD7863ARZ uses a high-speed parallel data interface.
- Does the AD7863ARZ have overvoltage protection?
- What is the power supply requirement for the AD7863ARZ?
The AD7863ARZ operates from a single 5 V supply.
- What is the typical power consumption of the AD7863ARZ?
The typical power consumption is 70 mW.
- What are the available packages for the AD7863ARZ?
The AD7863ARZ is available in 28-Lead SOIC_W and SSOP packages.
- What is the operating temperature range of the AD7863ARZ?
The operating temperature range is –40°C to +85°C.
- Does the AD7863ARZ have an internal reference voltage?
