Overview
The AD976AR is a high-speed, low-power 16-bit analog-to-digital converter (ADC) manufactured by Analog Devices Inc. This device operates from a single 5 V supply and is designed for applications requiring high throughput rates and precise analog-to-digital conversion. The AD976AR uses a successive approximation architecture with a capacitor array charge distribution technique, which enhances linearity and reduces temperature-induced errors. It features an internal 2.5 V reference and an on-chip clock, making it a highly integrated solution for various data acquisition systems.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Bits | 16 |
| Sampling Rate (Per Second) | 100 kSPS (AD976), 200 kSPS (AD976A) |
| Number of Analog In Channels | 1 |
| Input Type | Single Ended |
| Data Interface | Parallel |
| Configuration | S/H-ADC |
| Architecture | Successive Approximation (SAR) |
| Reference Type | External, Internal |
| Voltage - Supply, Analog | 5 V |
| Operating Temperature | -40°C to +85°C |
| Package | 28-SOIC (0.295", 7.50mm Width) |
| Power Dissipation | 100 mW Max |
| Signal to Noise Ratio (SNR) | 83 dB |
Key Features
- High-Speed Throughput: The AD976AR offers throughput rates of 100 kSPS, while the AD976A version provides 200 kSPS.
- Single-Supply Operation: Operates from a single 5 V supply, dissipating only 100 mW max.
- 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, eliminating the need for additional external circuitry.
- High Linearity: Uses a capacitor array charge distribution technique to minimize linearity errors due to temperature-induced mismatches.
- Flexible Packaging: Available in 28-lead skinny DIP, SSOP, and SOIC packages.
Applications
- Data Acquisition Systems: Ideal for high-speed data acquisition applications requiring precise analog-to-digital conversion.
- Digital Signal Processing: Can connect directly to digital signal processors and microcontrollers.
- Industrial Control Systems: Suitable for industrial environments with its robust operating temperature range and high accuracy.
- Medical Devices: Used in medical equipment where high-speed and low-power conversion is critical.
- Aerospace and Defense: Applicable in various aerospace and defense applications requiring high reliability and performance.
Q & A
- What is the resolution of the AD976AR ADC?
The AD976AR is a 16-bit analog-to-digital converter.
- What are the sampling rates of the AD976 and AD976A?
The AD976 has a sampling rate of 100 kSPS, while the AD976A has a sampling rate of 200 kSPS.
- What is the supply voltage for the AD976AR?
The AD976AR operates from a single 5 V supply.
- What is the operating temperature range of the AD976AR?
The operating temperature range is -40°C to +85°C.
- What type of architecture does the AD976AR use?
The AD976AR uses a successive approximation (SAR) architecture.
- Does the AD976AR have an internal reference?
Yes, the AD976AR has both internal and external reference options.
- What is the power dissipation of the AD976AR?
The maximum power dissipation is 100 mW.
- What is the signal to noise ratio (SNR) of the AD976AR?
The SNR is 83 dB.
- In what packages is the AD976AR available?
The AD976AR is available in 28-lead skinny DIP, SSOP, and SOIC packages.
- Is the AD976AR suitable for high-speed data acquisition?
Yes, the AD976AR is designed for high-speed data acquisition applications.
