Overview
The AD974BNZ, produced by Analog Devices Inc., is a comprehensive data acquisition system integrated into a single chip. It combines a four-channel input multiplexer, a high-speed 16-bit successive-approximation switched-capacitor ADC, and an internal +2.5 V reference. This device operates from a single +5 V power supply and features a power-down mode to minimize power consumption. The AD974 is designed for efficient data transfer with a low number of interconnect signals, making it suitable for various applications requiring precise analog-to-digital conversion.
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 + 1.75 | +3 | LSB |
| Full-Scale Error (Internal Reference) | ±0.5% | ±0.25% | % | |
| Power Dissipation | 120 | mW | ||
| Power-Down Mode | 50 μW | W | ||
| Input Impedance | pF (Sampling Capacitance: 40 pF) | |||
| Aperture Delay | 40 | 40 | ns | |
| Transient Response | 1 | 1 | μs | |
| Overvoltage Recovery | 150 | 150 | ns | |
| Internal Reference Voltage | 2.48 | 2.5 | 2.52 | V |
| Operating Temperature Range | -40°C | +85°C | °C |
Key Features
- Four-channel input multiplexer allowing for multiple analog input channels.
- High-speed 16-bit successive-approximation switched-capacitor ADC with a throughput rate of 200 kSPS.
- Internal +2.5 V reference voltage for precise conversions.
- Single +5 V power supply operation with a power-down mode to reduce power consumption to 50 μW.
- Comprehensive testing for both AC and DC parameters, including SNR, THD, offset, gain, and linearity.
- Available in 28-lead DIP, SOIC, and SSOP packages.
- Low number of interconnect signals for efficient data transfer.
Applications
The AD974BNZ is suitable for a variety of applications requiring precise and efficient analog-to-digital conversion. These include:
- Data acquisition systems in industrial and medical devices.
- Automotive systems requiring multiple channel analog input conversions.
- Aerospace and defense applications where high accuracy and reliability are critical.
- Test and measurement equipment needing high-speed and accurate ADCs.
- Embedded systems and IoT devices that require low power consumption and multiple analog input channels.
Q & A
- What is the resolution of the AD974BNZ ADC?
The AD974BNZ has a resolution of 16 bits.
- What are the available input voltage ranges for the AD974BNZ?
The AD974BNZ supports input voltage ranges of ±10 V, 0 V to +4 V, and 0 V to +5 V.
- What is the throughput rate of the AD974BNZ?
The throughput rate of the AD974BNZ is 200 kSPS.
- Does the AD974BNZ have an internal reference voltage?
Yes, the AD974BNZ includes an internal +2.5 V reference voltage.
- What is the power consumption of the AD974BNZ in normal operation and power-down mode?
The AD974BNZ consumes a maximum of 120 mW in normal operation and 50 μW in power-down mode.
- What types of packages are available for the AD974BNZ?
The AD974BNZ is available in 28-lead DIP, SOIC, and SSOP packages.
- What are the key features of the AD974BNZ's ADC?
The AD974BNZ features a high-speed 16-bit successive-approximation switched-capacitor ADC with comprehensive testing for AC and DC parameters.
- What is the operating temperature range of the AD974BNZ?
The operating temperature range of the AD974BNZ is from -40°C to +85°C.
- How many analog input channels does the AD974BNZ support?
The AD974BNZ supports four single-ended analog input channels through its input multiplexer.
- Is the AD974BNZ suitable for low power applications?
Yes, the AD974BNZ is suitable for low power applications due to its power-down mode and low power consumption.
