Overview
The AD974AR, produced by Analog Devices Inc., is a 4-channel, 16-bit, 200 kSPS data acquisition system. This integrated circuit combines a four-channel input multiplexer, a high-speed successive-approximation switched-capacitor ADC, and an internal 2.5 V reference on a single chip. It operates from a single +5 V power supply and features a power-down mode to minimize power consumption. The AD974AR is designed for efficient data transfer with a low number of interconnect signals and is comprehensively tested for both AC and DC parameters such as SNR, THD, offset, gain, and linearity.
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 | kSPS |
| Integral Linearity Error | ±3 | ±2.0 | LSB | |
| Differential Linearity Error | -2 | +3 | -1 +1.75 | LSB |
| Full-Scale Error (Internal Reference) | ±0.5 | ±0.25 | % | |
| Power Dissipation | 120 | mW | ||
| Power-Down Mode | 50 | μW |
Key Features
- Four-channel input multiplexer and a high-speed 16-bit sampling ADC on a single chip.
- Operates from a single +5 V power supply with a power-down mode for low power consumption.
- Internal 2.5 V reference and option for external reference.
- High-speed serial interface for efficient data transfer with a low number of interconnect signals.
- Comprehensive testing for AC and DC parameters including SNR, THD, offset, gain, and linearity.
- Available in 28-lead DIP, SOIC, and SSOP packages).
Applications
- Data acquisition systems requiring multiple analog input channels.
- Industrial control and automation systems.
- Medical devices and diagnostic equipment.
- Aerospace and defense applications where high precision and reliability are critical.
- Test and measurement instruments.
Q & A
- What is the resolution of the AD974AR?
The AD974AR has a resolution of 16 bits.
- What are the available analog input voltage ranges for the AD974AR?
The AD974AR 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 AD974AR?
The throughput rate of the AD974AR is 200 kSPS.
- Does the AD974AR have a power-down mode?
- What types of packages is the AD974AR available in?
The AD974AR is available in 28-lead DIP, SOIC, and SSOP packages.
- Can the AD974AR use an external reference voltage?
- What is the maximum power dissipation of the AD974AR?
The maximum power dissipation of the AD974AR is 120 mW.
- Is the AD974AR suitable for high-speed data acquisition?
- What are some common applications of the AD974AR?
The AD974AR is commonly used in data acquisition systems, industrial control, medical devices, aerospace, and test and measurement instruments.
- How is the AD974AR tested for performance?
The AD974AR is comprehensively tested for both AC and DC parameters including SNR, THD, offset, gain, and linearity.
