Overview
The AD977AARS is a high-speed, 16-bit analog-to-digital converter (ADC) manufactured by Analog Devices Inc. This component is part of the AD977/AD977A series, known for its low power consumption and high throughput rates. The AD977AARS operates from a single 5 V supply and features a successive approximation switched capacitor architecture. It is designed to provide high accuracy and linearity, making it suitable for a variety of applications requiring precise analog-to-digital conversion.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of Bits | 16 | - |
| Sampling Rate | 200 kSPS | - |
| Input Type | Single Ended | - |
| Input Ranges | Unipolar: 0 V–10 V, 0 V–5 V, 0 V–4 V; Bipolar: ±10 V, ±5 V, ±3.3 V | - |
| Data Interface | SPI, Serial | - |
| Reference Type | External, Internal | - |
| Voltage - Supply, Analog/Digital | 5 V | - |
| Operating Temperature | -40°C to 85°C | - |
| Package | 28-SSOP (0.209", 5.30mm Width) | - |
| Differential Nonlinearity (DNL) | ±3 LSB | - |
| Integral Nonlinearity (INL) | ±3 LSB | - |
| Signal-to-Noise Ratio (SNR) | 83 dB | - |
| Total Harmonic Distortion (THD) | -90 dB | - |
Key Features
- Fast Throughput Rate: The AD977AARS has a high throughput rate of 200 kSPS, making it suitable for high-speed data acquisition applications.
- Single 5 V Supply Operation: The component operates from a single 5 V supply, simplifying power management in system designs.
- Low Power Consumption: It features a power-down mode with a power dissipation of 50 µW, which is beneficial for power-sensitive applications.
- Flexible Input Ranges: Supports both unipolar and bipolar input ranges, including 0 V–10 V, 0 V–5 V, 0 V–4 V, ±10 V, ±5 V, and ±3.3 V.
- High Speed Serial Interface: Utilizes an SPI or serial interface for data communication, enabling efficient data transfer.
- On-Chip Clock and Reference: Includes an on-chip clock and the option for an external or internal 2.5 V reference, enhancing system integration and accuracy.
- Compact Packaging: Available in a 28-SSOP package, which is compact and suitable for space-constrained designs.
Applications
- Automatic Test Equipment: Ideal for high-speed data acquisition in automated testing environments.
- Process Control and Industrial Automation: Suitable for precise measurement and control in industrial settings.
- Medical Devices: Can be used in medical equipment requiring high accuracy and reliability in analog-to-digital conversion.
- Aerospace and Defense: Applicable in various aerospace and defense applications where high-speed and accurate data conversion is critical.
Q & A
- What is the sampling rate of the AD977AARS?
The AD977AARS has a sampling rate of 200 kSPS.
- What are the input ranges supported by the AD977AARS?
The component supports both unipolar and bipolar input ranges, including 0 V–10 V, 0 V–5 V, 0 V–4 V, ±10 V, ±5 V, and ±3.3 V.
- What is the power supply requirement for the AD977AARS?
The AD977AARS operates from a single 5 V supply.
- What is the package type of the AD977AARS?
The AD977AARS is available in a 28-SSOP package.
- What is the differential nonlinearity (DNL) of the AD977AARS?
The DNL of the AD977AARS is ±3 LSB.
- What is the signal-to-noise ratio (SNR) of the AD977AARS?
The SNR of the AD977AARS is 83 dB.
- Does the AD977AARS support an external or internal reference?
Yes, the AD977AARS supports both external and internal 2.5 V references.
- What is the operating temperature range of the AD977AARS?
The operating temperature range is -40°C to 85°C.
- What are some common applications of the AD977AARS?
Common applications include automatic test equipment, process control, industrial automation, medical devices, and aerospace and defense.
- Does the AD977AARS have a power-down mode?
Yes, the AD977AARS has a power-down mode with a power dissipation of 50 µW.
