Overview
The AD974AN, produced by Analog Devices Inc., is a comprehensive data acquisition system integrated into a single chip. This component combines 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 features a power-down mode to minimize power consumption. The AD974AN 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 | ||
| Sampling Capacitance | 40 | 40 | 40 | pF |
| Throughput Rate | 200 | 200 | 200 | kHz |
| Power Supply | +5 V | V | ||
| Power Dissipation | 120 | mW | ||
| Power-Down Mode | 50 | µW | ||
| Integral Linearity Error | ±3 | ±2.0 | LSB | |
| Differential Linearity Error | -2 | -1 | +3 | LSB |
Key Features
- Four-channel input multiplexer and 16-bit successive-approximation switched-capacitor ADC on a single chip.
- Operates from a single +5 V power supply with a power-down mode.
- High-speed serial interface for efficient data transfer.
- Internal 2.5 V reference with options for 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
- Data acquisition systems in industrial, medical, and scientific instruments.
- Automotive and aerospace applications requiring high precision and reliability.
- Test and measurement equipment.
- Embedded systems and IoT devices needing multi-channel ADC capabilities.
Q & A
- What is the resolution of the AD974AN ADC?
The AD974AN has a resolution of 16 bits.
- What are the available analog input voltage ranges for the AD974AN?
The AD974AN 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 AD974AN?
The throughput rate of the AD974AN is 200 kSPS.
- Does the AD974AN have a power-down mode?
Yes, the AD974AN has a power-down mode that reduces power consumption to 50 µW.
- What types of packages are available for the AD974AN?
The AD974AN is available in 28-lead DIP, SOIC, and SSOP packages.
- Can the AD974AN use an external reference voltage?
Yes, the AD974AN can use either an internal 2.5 V reference or an external reference voltage.
- What is the maximum power dissipation of the AD974AN?
The maximum power dissipation of the AD974AN is 120 mW.
- Is the AD974AN tested for both AC and DC parameters?
Yes, the AD974AN is comprehensively tested for both AC parameters (SNR, THD) and DC parameters (offset, gain, linearity).
- What is the sampling capacitance of the AD974AN?
The sampling capacitance of the AD974AN is 40 pF.
- How does the AD974AN interface with other components?
The AD974AN interfaces through a high-speed serial interface, requiring a low number of interconnect signals.
