Overview
The AD7862AN-3 is a high-performance, 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 AD7862AN-3 operates from a single +5 V supply, consumes 60 mW typically, and features an 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 | ±2.5 V | For AD7862-3 version | |
| Supply Voltage | +5 V | ||
| Power Consumption | 60 mW (typ) | ||
| Aperture Delay | 20 ns (typ) | ||
| Aperture Jitter | 100 ps (typ) | ||
| Aperture Delay Matching | 200 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 | –40°C to +85°C | ||
| Package | 28-lead DIP, SSOP, SOIC |
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, ±7 V, or +7 V depending on the input range.
- Internal +2.5 V reference and track/hold amplifiers.
Applications
The AD7862AN-3 is suitable for a variety of applications, including:
- Industrial control systems requiring precise and synchronized data acquisition.
- Medical devices that need simultaneous sampling of multiple signals.
- Aerospace and defense systems where high accuracy and reliability are critical.
- Portable and battery-powered devices that benefit from the automatic power-down mode.
- Data acquisition systems in scientific and research environments.
Q & A
- What is the resolution of the AD7862AN-3 ADC?
The AD7862AN-3 has a resolution of 12 bits. - What is the sampling rate of the AD7862AN-3?
The sampling rate is 250 kSPS. - What are the available analog input ranges for the AD7862AN-3?
The AD7862AN-3 is available in versions with input ranges of ±10 V, ±2.5 V, and 0 V to +2.5 V. - What is the supply voltage for the AD7862AN-3?
The supply voltage is +5 V. - How much power does the AD7862AN-3 typically consume?
The AD7862AN-3 typically consumes 60 mW. - What is the aperture delay of the AD7862AN-3?
The aperture delay is 20 ns (typical). - Does the AD7862AN-3 have overvoltage protection?
Yes, the AD7862AN-3 has overvoltage protection on the analog inputs. - What types of packages are available for the AD7862AN-3?
The AD7862AN-3 is available in 28-lead DIP, SSOP, and SOIC packages. - What is the operating temperature range for the AD7862AN-3?
The operating temperature range is –40°C to +85°C. - Is the AD7862AN-3 suitable for battery-powered applications?
Yes, the AD7862AN-3 is suitable for battery-powered applications due to its automatic power-down mode.
