Overview
The AD976CN, produced by Analog Devices Inc., is a high-speed, low-power 16-bit Analog-to-Digital Converter (ADC). This device operates from a single 5 V supply and is designed for high-performance applications. The AD976CN features a successive approximation, switched capacitor architecture, which ensures high accuracy and linearity. It includes an internal 2.5 V reference and a high-speed parallel interface, making it suitable for direct connection to digital signal processors and microcontrollers. The device is available in a 28-lead DIP package and is known for its comprehensive DC and AC specifications, including Signal-to-Noise Ratio (SNR) and Total Harmonic Distortion (THD).
Key Specifications
| Parameter | Value |
|---|---|
| Number of Bits | 16 |
| Throughput Rate | 100 kSPS (AD976), 200 kSPS (AD976A) |
| Supply Voltage | Single 5 V |
| Power Dissipation | 100 mW Max |
| Input Range | ±10 V |
| Reference Voltage | Internal 2.5 V |
| Interface | High-Speed Parallel |
| Package Type | 28-Lead DIP, SSOP, SOIC |
| Operating Temperature | –40°C to +85°C |
Key Features
- Fast Throughput: The AD976CN offers high throughput rates of 100 kSPS, with the AD976A variant offering 200 kSPS.
- Single-Supply Operation: Operates from a single 5 V supply, minimizing power consumption and complexity.
- Comprehensive DC and AC Specifications: Factory calibrated and fully tested for SNR, THD, offset, gain, and linearity.
- Integrated Solution: Includes an accurate ADC, reference, and on-chip clock, providing a complete A/D conversion solution.
- High-Speed Parallel Interface: Enables direct connection to digital signal processors and microcontrollers.
- Successive Approximation Technique: Uses a capacitor array charge distribution technique for high accuracy and linearity.
Applications
The AD976CN is suitable for a variety of high-performance applications, including:
- Industrial Automation: For precise analog-to-digital conversion in industrial control systems.
- Medical Devices: In medical equipment requiring high accuracy and reliability.
- Aerospace and Defense: For applications demanding high-speed and low-power consumption.
- Test and Measurement Equipment: For accurate data acquisition and analysis.
Q & A
- What is the throughput rate of the AD976CN?
The AD976CN has a throughput rate of 100 kSPS, while the AD976A variant has a throughput rate of 200 kSPS.
- What is the supply voltage for the AD976CN?
The AD976CN operates from a single 5 V supply.
- What is the input range of the AD976CN?
The input range of the AD976CN is ±10 V.
- Does the AD976CN have an internal reference voltage?
Yes, the AD976CN includes an internal 2.5 V reference voltage.
- What types of packages are available for the AD976CN?
The AD976CN is available in 28-lead DIP, SSOP, and SOIC packages.
- What is the operating temperature range for the AD976CN?
The operating temperature range for the AD976CN is –40°C to +85°C.
- How does the AD976CN achieve high accuracy and linearity?
The AD976CN uses a capacitor array charge distribution technique to achieve high accuracy and linearity.
- Is the AD976CN suitable for direct connection to digital signal processors?
Yes, the AD976CN has a high-speed parallel interface that allows direct connection to digital signal processors and microcontrollers.
- What is the power dissipation of the AD976CN?
The power dissipation of the AD976CN is 100 mW maximum.
- Is the AD976CN still in production?
No, the AD976CN is listed as obsolete (EOL).
