Overview
The AD7862ARS-2 is a high-speed, low-power, dual 12-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 AD7862 operates from a single +5 V supply and features automatic power-down mode, which makes it suitable for battery-powered or portable applications.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 12 bits |
| Sampling Rate | 250 kSPS |
| Conversion Time | 4 µs |
| Analog Input Range | 0 V to 2.5 V (AD7862-2), ±2.5 V (AD7862-3), ±10 V (AD7862-10) |
| Supply Voltage | +5 V |
| Power Consumption | 60 mW (typical), 50 µW (power-down mode) |
| Interface | High-speed parallel interface |
| Package Options | 28-lead SSOP, SOIC, DIP |
| Operating Temperature | –40°C to +85°C |
| Overvoltage Protection | Up to ±17 V, ±7 V, or +7 V depending on input range |
Key Features
- Simultaneous sampling and conversion of two channels
- Four analog inputs grouped into two channels (A & B) with two inputs per channel
- Internal +2.5 V reference and track/hold amplifiers
- Low power consumption with automatic power-down mode
- High-speed parallel interface for easy connection to microprocessors
- Overvoltage protection on analog inputs
- Available in 28-lead SSOP, SOIC, and DIP packages
Applications
- AC Motor Control
- Uninterrupted Power Supplies
- Data Acquisition Systems
- Communications
Q & A
- What is the resolution of the AD7862ARS-2? The AD7862ARS-2 has a resolution of 12 bits.
- What is the sampling rate of the AD7862ARS-2? The sampling rate is 250 kSPS.
- How long does the conversion process take? The conversion time is 4 µs.
- What are the available analog input ranges for the AD7862? The available ranges are 0 V to 2.5 V, ±2.5 V, and ±10 V depending on the model.
- What is the supply voltage for the AD7862ARS-2? The supply voltage is +5 V.
- How much power does the AD7862ARS-2 consume? The typical power consumption is 60 mW, and it reduces to 50 µW in power-down mode.
- What type of interface does the AD7862ARS-2 use? It uses a high-speed parallel interface.
- What package options are available for the AD7862ARS-2? It is available in 28-lead SSOP, SOIC, and DIP packages.
- What is the operating temperature range for the AD7862ARS-2? The operating temperature range is –40°C to +85°C.
- Does the AD7862ARS-2 have overvoltage protection? Yes, it has overvoltage protection up to ±17 V, ±7 V, or +7 V depending on the input range.
