Overview
The MAX178ACNG+ is a complete, calibrated 12-bit Analog-to-Digital Converter (ADC) produced by Analog Devices Inc./Maxim Integrated. This device integrates a precision voltage reference, track-and-hold circuitry, and a conversion clock, ensuring true 12-bit performance over the full operating temperature range without the need for external adjustments. Each conversion includes an auto-zero cycle, which reduces zero errors to typically below 100μV. The MAX178 is designed for easy microprocessor interfacing with CHIP SELECT, READ, and WRITE inputs, and it provides 2-byte, 12-bit conversion data over an 8-bit three-state output bus.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 12-bit |
| Analog Input Range | 0V to +5V (with +5V reference) |
| Internal Reference Accuracy (MAX178A) | ±0.3% |
| Conversion Time | 3µs |
| Output Bus | 8-bit three-state output bus |
| Package Options | Plastic Dual-In-Line, Narrow (0.3in), Small-Outline IC, Wide (0.3in) |
| Operating Temperature Range | Full operating temperature range (specifics vary by package) |
Key Features
- Complete, calibrated 12-bit ADC with precision voltage reference, track-and-hold, and conversion clock.
- Internal calibration circuitry maintains true 12-bit performance over the full operating temperature range.
- Auto-zero cycle reduces zero errors to typically below 100μV.
- Easily interfaces with microprocessors via CHIP SELECT, READ, and WRITE inputs.
- Provides 2-byte, 12-bit conversion data over an 8-bit three-state output bus.
- Two converter busy flags for polling the converter's status.
Applications
The MAX178 is suitable for various applications requiring high precision and reliability in analog-to-digital conversion. These include:
- Industrial control systems
- Medical devices
- Aerospace and defense systems
- Automotive systems
- Any application requiring accurate and reliable analog-to-digital conversion.
Q & A
- What is the resolution of the MAX178 ADC?
The MAX178 is a 12-bit Analog-to-Digital Converter.
- What is the analog input range of the MAX178 when using a +5V reference?
The analog input range is 0V to +5V when using a +5V reference.
- How accurate is the internal reference of the MAX178A?
The internal reference accuracy of the MAX178A is ±0.3%.
- What is the conversion time of the MAX178?
The conversion time is 3µs.
- How does the MAX178 interface with microprocessors?
The MAX178 interfaces with microprocessors via CHIP SELECT, READ, and WRITE inputs.
- What is the purpose of the auto-zero cycle in the MAX178?
The auto-zero cycle reduces zero errors to typically below 100μV.
- What types of packages are available for the MAX178?
The MAX178 is available in Plastic Dual-In-Line, Narrow (0.3in), and Small-Outline IC, Wide (0.3in) packages.
- What are some common applications of the MAX178?
The MAX178 is used in industrial control systems, medical devices, aerospace and defense systems, automotive systems, and any application requiring accurate and reliable analog-to-digital conversion.
- How does the MAX178 maintain its performance over temperature?
The MAX178 maintains true 12-bit performance over the full operating temperature range due to its internal calibration circuitry.
- What is the significance of the two converter busy flags in the MAX178?
The two converter busy flags facilitate polling of the converter's status.
