Overview
The AD977AAR is a 16-bit analog-to-digital converter (ADC) produced by Analog Devices Inc. This component is part of the AD977/AD977A series, known for its high-speed and single-supply operation. The AD977AAR operates at a sampling rate of 200 kSPS and is designed with a switched capacitor architecture, which includes an internal 2.5 V reference and a high-speed serial interface. It is factory calibrated to minimize linearity errors, making it suitable for a variety of applications requiring precise analog-to-digital conversion.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Manufacturer | Analog Devices Inc. | |
| Part Number | AD977AAR | |
| Package | 20-SOIC (0.295", 7.50mm Width) | |
| Number of Bits | 16 | |
| Sampling Rate (Per Second) | 200 kSPS | |
| Number of Inputs | 3 | |
| Input Type | Single Ended | |
| Data Interface | SPI, Serial | |
| Architecture | SAR (Successive Approximation) | |
| Reference Type | External, Internal | |
| Voltage - Supply, Analog | 5 V | |
| Voltage - Supply, Digital | 5 V | |
| Integral Nonlinearity (INL) | ±3 LSB | |
| Differential Nonlinearity (DNL) | ±3 LSB | |
| Operating Temperature | -40°C ~ 85°C |
Key Features
- High-Speed Conversion: The AD977AAR operates at a sampling rate of 200 kSPS, making it suitable for high-speed data acquisition applications.
- Single-Supply Operation: It operates from a single 5 V supply, simplifying power management and reducing component count.
- Factory Calibrated: The ADC is factory calibrated to minimize all linearity errors, ensuring high accuracy and precision.
- Comprehensive Testing: The component is thoroughly tested for both DC and AC parameters, including SNR, THD, offset, gain, and linearity.
- Flexible Input Ranges: Supports full-scale bipolar input ranges of ±10 V, ±5 V, and ±3.3 V, as well as unipolar ranges of 0 V to 10 V, 0 V to 5 V, and 0 V to 4 V.
- High-Speed Serial Interface: Features a high-speed serial interface for efficient data transfer.
Applications
- Data Acquisition Systems: Ideal for high-speed data acquisition in various industrial, medical, and scientific applications.
- Instrumentation: Suitable for use in precision measurement instruments due to its high accuracy and linearity.
- Telecommunications: Used in telecommunications equipment for converting analog signals to digital signals efficiently.
- Medical Devices: Applied in medical devices requiring precise analog-to-digital conversion, such as in diagnostic equipment.
- Aerospace and Defense: Utilized in aerospace and defense applications where high-speed and accurate data conversion is critical.
Q & A
- What is the sampling rate of the AD977AAR?
The AD977AAR has a sampling rate of 200 kSPS.
- What is the resolution of the AD977AAR?
The AD977AAR is a 16-bit analog-to-digital converter.
- What type of package does the AD977AAR come in?
The AD977AAR comes in a 20-SOIC (0.295", 7.50mm Width) package.
- What is the operating voltage of the AD977AAR?
The AD977AAR operates from a single 5 V supply for both analog and digital sections.
- What are the input ranges supported by the AD977AAR?
The AD977AAR supports full-scale bipolar input ranges of ±10 V, ±5 V, and ±3.3 V, as well as unipolar ranges of 0 V to 10 V, 0 V to 5 V, and 0 V to 4 V.
- What is the data interface of the AD977AAR?
The AD977AAR features a high-speed serial interface, specifically SPI and serial interfaces.
- What is the architecture of the AD977AAR?
The AD977AAR uses a Successive Approximation (SAR) architecture.
- What are the key linearity specifications of the AD977AAR?
The AD977AAR has an Integral Nonlinearity (INL) and Differential Nonlinearity (DNL) of ±3 LSB.
- What is the operating temperature range of the AD977AAR?
The AD977AAR operates over a temperature range of -40°C to 85°C.
- Is the AD977AAR factory calibrated?
Yes, the AD977AAR is factory calibrated to minimize all linearity errors.
