Overview
The AD974BN, produced by Analog Devices Inc., is a comprehensive data acquisition system integrated into a single chip. This component combines a four-channel multiplexer, a high-speed 16-bit sampling analog-to-digital converter (ADC), and a +2.5 V reference. It operates from a single +5 V power supply and includes a power-down mode to minimize power consumption. The AD974BN is designed for efficient data transfer with a low number of interconnect signals, making it suitable for various applications requiring precise and reliable data acquisition.
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 Speed | 5 | 5 | 5 | µs |
| Throughput Rate | 200 | 200 | 200 | kHz |
| Integral Linearity Error | ±3 | ±2.0 | LSB | |
| Differential Linearity Error | –2 | +3 | +1.75 | LSB |
| Full-Scale Error (Internal Reference) | ±0.5 | ±0.25 | % | |
| Input Bandwidth | 2.7 | 2.7 | MHz | |
| Aperture Delay | 40 | 40 | ns | |
| Transient Response (Full-Scale Step) | 1 | 1 | µs | |
| Overvoltage Recovery | 150 | 150 | ns |
Key Features
- Four-channel multiplexer and 16-bit sampling ADC on a single chip.
- Single +5 V power supply operation with a power-down mode.
- Input ranges: ±10 V, 0 V to +4 V, and 0 V to +5 V.
- Comprehensive testing for AC parameters (SNR, THD) and DC parameters (offset, gain, linearity).
- Internal or external +2.5 V reference option.
- Low power dissipation: 120 mW maximum, 50 µW in power-down mode.
- High-speed throughput: 200 kSPS.
- Available in 28-lead DIP, SOIC, and SSOP packages.
Applications
- Data acquisition systems in industrial and medical devices.
- Automotive systems requiring multiple analog input channels.
- Test and measurement equipment.
- Embedded systems needing high-speed ADC capabilities.
- Communication systems where precise analog-to-digital conversion is critical.
Q & A
- What is the resolution of the AD974BN ADC?
The AD974BN has a resolution of 16 bits.
- What are the available input voltage ranges for the AD974BN?
The input voltage ranges are ±10 V, 0 V to +4 V, and 0 V to +5 V.
- What is the throughput rate of the AD974BN?
The throughput rate is 200 kHz.
- Does the AD974BN have a power-down mode?
- What types of packages is the AD974BN available in?
The AD974BN is available in 28-lead DIP, SOIC, and SSOP packages.
- Can the AD974BN use an external reference voltage?
- What is the input bandwidth of the AD974BN?
The input bandwidth is 2.7 MHz.
- How long does the AD974BN take to recover from overvoltage?
The overvoltage recovery time is 150 ns.
- Is the AD974BN suitable for high-speed applications?
- What are some common applications of the AD974BN?
