Overview
The AD573KNZ is a 10-bit successive approximation analog-to-digital converter (ADC) produced by Analog Devices Inc. This integrated circuit is a complete ADC system, incorporating a digital-to-analog converter (DAC), voltage reference, clock, comparator, successive approximation register (SAR), and three-state output buffers, all fabricated on a single chip. The AD573KNZ operates on dual supplies of +5 V and –12 V to –15 V and can accept analog inputs in either unipolar (0 V to +10 V) or bipolar (–5 V to +5 V) configurations. It is known for its high accuracy, maintained through laser trimming of the high stability SiCr thin-film resistor ladder network and a temperature-compensated subsurface Zener reference.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Resolution | 10 | 10 | 10 | Bits |
| Relative Accuracy | ±1 | ±1/2 | ±1 | LSB |
| Full-Scale Calibration | ±2 | LSB | ||
| Conversion Time | 20 | µs | ||
| Operating Temperature Range | 0 | 70 | °C | |
| Supply Voltages | +5 V, –12 V to –15 V | V | ||
| Analog Input Range | 0 V to +10 V or –5 V to +5 V | V | ||
| Package Type | 20-pin Plastic Dual In-Line Package (PDIP) |
Key Features
- Complete 10-bit successive approximation ADC on a single chip, requiring no external components for full accuracy conversion.
- Interfaces directly with many popular microprocessors without external buffers or peripheral interface adapters.
- True 10-bit accuracy with no missing codes over the entire operating temperature range.
- Adaptable to either unipolar or bipolar analog input configurations by grounding or opening a single pin.
- Operates on +5 V and –12 V to –15 V supplies.
- Available in versions compliant with MIL-STD-883.
Applications
The AD573KNZ is suitable for a variety of applications requiring high-accuracy analog-to-digital conversion, including:
- Data acquisition systems
- Industrial control systems
- Medical devices
- Military and aerospace applications (especially the MIL-STD-883 compliant version)
- Automotive systems requiring precise analog-to-digital conversion
Q & A
- What is the resolution of the AD573KNZ ADC?
The AD573KNZ has a resolution of 10 bits.
- What are the typical conversion times for the AD573KNZ?
The typical conversion time is 20 µs.
- What are the operating supply voltages for the AD573KNZ?
The AD573KNZ operates on +5 V and –12 V to –15 V supplies.
- Can the AD573KNZ handle both unipolar and bipolar analog inputs?
- What is the temperature range for the AD573KNZ?
The operating temperature range is 0°C to 70°C, but there are versions that operate from –55°C to 125°C.
- Does the AD573KNZ require external components for operation?
No, it does not require external components to perform a full accuracy 10-bit conversion.
- How does the AD573KNZ interface with microprocessors?
The AD573KNZ interfaces directly with many popular microprocessors without external buffers or peripheral interface adapters.
- Is the AD573KNZ available in a MIL-STD-883 compliant version?
- What package types are available for the AD573KNZ?
The AD573KNZ is available in 20-pin plastic dual in-line package (PDIP), 20-pin hermetically sealed ceramic DIP, and 20-pin leaded chip carrier.
- How is the accuracy of the AD573KNZ maintained?
The accuracy is maintained through laser trimming of the high stability SiCr thin-film resistor ladder network and a temperature-compensated subsurface Zener reference.
