Overview
The AD977ARSZ is a high-speed, low-power 16-bit analog-to-digital converter (ADC) produced by Analog Devices Inc. This component is part of the AD977 and AD977A series, known for their fast throughput rates and versatile input ranges. The AD977ARSZ operates from a single 5 V supply and features a successive approximation, switched capacitor ADC architecture. It is factory calibrated to minimize linearity errors and includes an internal 2.5 V reference and a high-speed serial interface.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of Bits | 16 | |
| Sampling Rate | 100 kSPS (AD977), 200 kSPS (AD977A) | samples per second |
| 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 | 28-SSOP (0.209", 5.30mm Width) | |
| Power Dissipation | 100 mW Max | |
| Power-Down Mode | 50 µW |
Key Features
- Fast throughput rates: 100 kSPS for AD977 and 200 kSPS for AD977A.
- Single 5 V supply operation.
- Low power dissipation: 100 mW maximum, with a power-down mode of 50 µW.
- High-speed serial interface.
- Internal 2.5 V reference and option for external reference.
- Factory calibrated to minimize linearity errors.
- Multiple input ranges: unipolar (0 V to 10 V, 0 V to 5 V, 0 V to 4 V) and bipolar (±10 V, ±5 V, ±3.3 V).
- On-chip clock and high-speed serial interface.
- Available in 20-Lead SOIC and 28-Lead SSOP packages.
Applications
- Automatic test equipment.
- Process control and industrial automation.
- High-speed data acquisition systems.
- Medical imaging and diagnostics.
- Aerospace and defense applications requiring high precision and reliability.
Q & A
- What is the resolution of the AD977ARSZ ADC?
The AD977ARSZ has a resolution of 16 bits.
- What are the sampling rates for the AD977 and AD977A?
The AD977 has a sampling rate of 100 kSPS, while the AD977A has a sampling rate of 200 kSPS.
- What are the available input ranges for the AD977ARSZ?
The input ranges include unipolar (0 V to 10 V, 0 V to 5 V, 0 V to 4 V) and bipolar (±10 V, ±5 V, ±3.3 V).
- What is the power supply requirement for the AD977ARSZ?
The AD977ARSZ operates from a single 5 V supply.
- What is the power dissipation of the AD977ARSZ?
The maximum power dissipation is 100 mW, with a power-down mode of 50 µW.
- What types of packages are available for the AD977ARSZ?
The component is available in 20-Lead SOIC and 28-Lead SSOP packages.
- Does the AD977ARSZ have an internal reference?
Yes, the AD977ARSZ has an internal 2.5 V reference, and it also supports an external reference.
- What is the operating temperature range for the AD977ARSZ?
The operating temperature range is -40°C to +85°C.
- What is the data interface type for the AD977ARSZ?
The data interface is SPI (Serial Peripheral Interface).
- What are some common applications for the AD977ARSZ?
Common applications include automatic test equipment, process control, industrial automation, medical imaging, and aerospace and defense.
