Overview
The AD7862ARS-10, produced by Analog Devices Inc., is a high-speed, low-power, dual 12-bit analog-to-digital converter (ADC). 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 | Units | Test Conditions/Comments |
|---|---|---|---|
| Resolution | 12-bit | ||
| Sampling Rate | 250 kSPS | ||
| Analog Input Range | ±10 V | For AD7862-10 version | |
| Supply Voltage | +5 V | ||
| Power Consumption | 60 mW (typ) | ||
| Aperture Delay | 20 ns (typ) | ||
| Aperture Jitter | 100 ps (typ) | ||
| Signal to (Noise+Distortion) Ratio | 70 dB (min) @ +25°C | fIN = 100.0 kHz, fS = 250 kSPS | |
| Total Harmonic Distortion | -78 dB (min) | fIN = 100.0 kHz, fS = 250 kSPS | |
| Operating Temperature Range | –40°C to +85°C | ||
| Package Types | 28-lead SSOP, SOIC, DIP |
Key Features
- Simultaneous sampling and conversion of two channels, preserving relative phase information.
- High-speed parallel interface for easy connection to microprocessors, microcontrollers, and digital signal processors.
- Automatic power-down mode for reduced power consumption in battery-powered or portable applications.
- Tight aperture delay matching between the two input sample-and-hold amplifiers.
- Overvoltage protection on analog inputs up to ±17 V.
- Internal +2.5 V reference.
Applications
The AD7862ARS-10 is suitable for a variety of applications, including:
- Data acquisition systems requiring simultaneous sampling of multiple channels.
- Portable and battery-powered devices due to its low power consumption.
- Industrial control systems where precise and synchronized data acquisition is necessary.
- Medical devices that require high-speed and low-noise ADCs.
- Aerospace and defense applications where reliability and precision are critical.
Q & A
- What is the resolution of the AD7862ARS-10?
The AD7862ARS-10 has a resolution of 12 bits. - What is the sampling rate of the AD7862ARS-10?
The sampling rate is 250 kSPS. - What are the available analog input ranges for the AD7862?
The AD7862 is available in three versions with different analog input ranges: ±10 V (AD7862-10), ±2.5 V (AD7862-3), and 0 V – +2.5 V (AD7862-2). - What is the supply voltage for the AD7862ARS-10?
The supply voltage is +5 V. - How much power does the AD7862ARS-10 typically consume?
The AD7862ARS-10 typically consumes 60 mW. - What is the aperture delay of the AD7862ARS-10?
The aperture delay is 20 ns (typ). - Does the AD7862ARS-10 have overvoltage protection?
Yes, the AD7862ARS-10 has overvoltage protection on the analog inputs up to ±17 V. - What types of packages are available for the AD7862ARS-10?
The AD7862ARS-10 is available in 28-lead SSOP, SOIC, and DIP packages. - What is the operating temperature range of the AD7862ARS-10?
The operating temperature range is –40°C to +85°C. - Does the AD7862ARS-10 have an internal reference voltage?
Yes, the AD7862ARS-10 has an internal +2.5 V reference.
