Overview
The AD977ABR is a high-speed, 16-bit analog-to-digital converter (ADC) produced by Analog Devices Inc. This device is part of the AD977/AD977A family, known for its fast throughput rates and low power consumption. The AD977ABR operates at a throughput rate of 200 kSPS, making it suitable for various high-speed applications. It features a single 5 V supply operation and a power-down mode to minimize power dissipation. The ADC is based on a successive approximation, switched capacitor architecture and includes an internal 2.5 V reference and a high-speed serial interface.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Bits | 16 |
| Sampling Rate | 200 kSPS |
| Number of Inputs | 1 |
| Input Type | Single Ended |
| Data Interface | SPI |
| Architecture | SAR (Successive Approximation Register) |
| Reference Type | External, Internal |
| Voltage - Supply, Analog | 5 V |
| Voltage - Supply, Digital | 5 V |
| Operating Temperature | -40°C to 85°C |
| Package / Case | 20-Lead Skinny SOIC or 28-Lead Skinny SSOP |
| Power Dissipation | 100 mW Max |
| Power-Down Mode | 50 µW |
Key Features
- Fast 16-bit ADC with throughput rates of 200 kSPS
- Single 5 V supply operation
- Low power dissipation: 100 mW max, 50 µW in power-down mode
- Input ranges: Unipolar (0 V–10 V, 0 V–5 V, 0 V–4 V) and Bipolar (±10 V, ±5 V, ±3.3 V)
- Choice of external or internal 2.5 V reference
- High-speed serial interface
- On-chip clock
- Factory calibrated to minimize linearity errors
Applications
- Automatic test equipment
- Process control and industrial automation
- High-speed data acquisition systems
- Medical imaging and diagnostics
- Aerospace and defense applications
Q & A
- What is the sampling rate of the AD977ABR?
The AD977ABR has a sampling rate of 200 kSPS. - What is the number of bits for the AD977ABR?
The AD977ABR is a 16-bit ADC. - What are the input ranges for the AD977ABR?
The input ranges include unipolar (0 V–10 V, 0 V–5 V, 0 V–4 V) and bipolar (±10 V, ±5 V, ±3.3 V). - What is the power supply requirement for the AD977ABR?
The AD977ABR operates on a single 5 V supply. - What is the power dissipation of the AD977ABR?
The power dissipation is 100 mW max, and 50 µW in power-down mode. - What type of data interface does the AD977ABR use?
The AD977ABR uses a high-speed serial interface (SPI). - What are the package options for the AD977ABR?
The AD977ABR is available in 20-Lead Skinny SOIC and 28-Lead Skinny SSOP packages. - What is the operating temperature range for the AD977ABR?
The operating temperature range is -40°C to 85°C. - Does the AD977ABR have an internal reference?
Yes, the AD977ABR has an internal 2.5 V reference, and it also supports an external reference. - What are some typical applications of the AD977ABR?
Typical applications include automatic test equipment, process control, industrial automation, and high-speed data acquisition systems.
