Overview
The AD974ARS, produced by Analog Devices Inc., is a comprehensive data acquisition system integrated into a single chip. This component features a four-channel input multiplexer, a high-speed 16-bit successive-approximation switched-capacitor analog-to-digital converter (ADC), and an internal 2.5 V reference. It operates from a single +5 V power supply and includes a power-down mode to minimize power consumption. The AD974ARS is designed for efficient data transfer with a low number of interconnect signals, making it suitable for various data acquisition applications.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Resolution | 16 | 16 | 16 | Bits |
| Analog Input Voltage Range | ±10 V, 0 V to +4 V, 0 V to +5 V | V | ||
| Throughput Rate | 200 | 200 | 200 | kHz |
| Integral Linearity Error | ±3 | ±2.0 | LSB | |
| Differential Linearity Error | -2 | -1 | +3 | LSB |
| Full-Scale Error (Internal Reference) | ±0.5% | ±0.25% | % | |
| Power Dissipation | 120 mW | mW | ||
| Power-Down Mode | 50 μW | μW |
Key Features
- Four-channel input multiplexer and 16-bit ADC on a single chip.
- Single +5 V power supply operation with a power-down mode.
- High-speed serial interface for efficient data transfer.
- Internal 2.5 V reference with the option for an external reference.
- Comprehensive testing for AC parameters (SNR, THD) and DC parameters (offset, gain, linearity).
- Available in 28-lead DIP, SOIC, and SSOP packages.
Applications
The AD974ARS is suitable for a variety of data acquisition applications, including:
- Industrial control systems.
- Medical devices requiring precise analog-to-digital conversion.
- Aerospace and defense systems where high reliability and accuracy are crucial.
- Automotive systems for sensor data acquisition.
- Test and measurement equipment.
Q & A
- What is the resolution of the AD974ARS ADC?
The AD974ARS has a 16-bit resolution.
- What are the available analog input voltage ranges for the AD974ARS?
The AD974ARS supports analog input voltage ranges of ±10 V, 0 V to +4 V, and 0 V to +5 V.
- What is the throughput rate of the AD974ARS?
The throughput rate of the AD974ARS is 200 kHz.
- Does the AD974ARS have a power-down mode?
- What types of packages are available for the AD974ARS?
The AD974ARS is available in 28-lead DIP, SOIC, and SSOP packages.
- How is the AD974ARS controlled during conversion?
The AD974ARS is controlled by two signals: R/C and CS. When R/C is brought low with CS low, the conversion process begins.
- What is the maximum power dissipation of the AD974ARS?
The maximum power dissipation of the AD974ARS is 120 mW.
- Is the AD974ARS factory calibrated?
- What are some common applications for the AD974ARS?
The AD974ARS is commonly used in industrial control systems, medical devices, aerospace and defense systems, automotive systems, and test and measurement equipment.
- Does the AD974ARS support external or internal references?
