Overview
The AD570SD/883B is a complete 8-bit successive approximation analog-to-digital converter (ADC) manufactured by Analog Devices Inc. This device integrates all necessary components for analog-to-digital conversion, including a digital-to-analog converter (DAC), voltage reference, clock, comparator, successive approximation register (SAR), and output buffers, all on a single chip. This integration eliminates the need for external components to achieve full 8-bit accuracy. The AD570SD/883B is designed for high reliability and is specified for the military temperature range of -55°C to +125°C, ensuring full 8-bit accuracy and no missing codes over this range.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 8-bit | |
| Conversion Time | 25 µs | |
| Analog Input Range | 0 V to +10 V (unipolar), ±5 V (bipolar) | |
| Power Supplies | +5 V, -15 V | |
| Temperature Range | -55°C to +125°C | |
| Package Type | 18-Lead Side-Brazed CerDIP | |
| Power Dissipation | 800 mW |
Key Features
- Complete 8-bit successive approximation ADC on a single chip, requiring no external components for full accuracy conversion.
- Temperature-compensated subsurface Zener reference for excellent stability over time and temperature.
- Laser-trimmed SiCr thin-film resistor ladder network for high accuracy.
- I2L (integrated injection logic) processing for the SAR function.
- Externally selectable analog input range: 0 V to +10 V (unipolar) or ±5 V (bipolar).
- Three-state outputs with high impedance state during conversion.
- DATA READY signal indicates completion of conversion.
Applications
- Military and aerospace systems due to its compliance with MIL-STD-883C, Class B.
- Industrial control systems requiring high accuracy and reliability.
- Data acquisition systems in harsh environments.
- Medical devices needing precise analog-to-digital conversion.
- Automotive systems that require robust and accurate ADCs.
Q & A
- What is the resolution of the AD570SD/883B?
The AD570SD/883B has an 8-bit resolution.
- What is the conversion time of the AD570SD/883B?
The conversion time is approximately 25 µs.
- What are the power supply requirements for the AD570SD/883B?
The device operates on +5 V and -15 V power supplies.
- What is the temperature range for the AD570SD/883B?
The device is specified for the temperature range of -55°C to +125°C.
- Does the AD570SD/883B require external components for operation?
No, the AD570SD/883B does not require external components to perform a full accuracy 8-bit conversion.
- What type of package is the AD570SD/883B available in?
The device is available in an 18-Lead Side-Brazed CerDIP package.
- How does the AD570SD/883B indicate the completion of a conversion?
The completion of a conversion is indicated by the DATA READY signal going low.
- What is the power dissipation of the AD570SD/883B?
The power dissipation is 800 mW.
- Is the AD570SD/883B suitable for military applications?
- What type of voltage reference does the AD570SD/883B use?
The device uses a temperature-compensated subsurface Zener reference.
