Overview
The MAX178BEWG is a calibrated, 12-bit analog-to-digital converter (ADC) produced by Analog Devices Inc./Maxim Integrated. This component is part of the MAX178 series, which includes a precision voltage reference, track-and-hold, and conversion clock. The MAX178 is designed to maintain 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.
Key Specifications
| Parameter | Specification |
|---|---|
| Number of Channels | 1 Channel |
| Resolution | 12-bit |
| Interface Type | Parallel |
| Sampling Rate | 17 kS/s |
| Input Type | Single-Ended |
| Analog Input Range | 0V to +5V (with +5V reference) |
| Reference Type | External (for MAX178B models) |
| Internal Reference Accuracy | ±0.3% (for MAX178A models) |
| Voltage - Supply, Analog | ±5V, 11.4V ~ 15.75V |
| Voltage - Supply, Digital | 5V |
| Operating Temperature | -40°C ~ 85°C |
| Package Type | Small-Outline IC, Wide (0.3in) |
Key Features
- Calibrated 12-bit ADC with internal calibration circuitry to maintain true 12-bit performance over the full operating temperature range.
- Includes a precision voltage reference, track-and-hold, and conversion clock.
- Auto-zero cycle in each conversion reduces zero errors to typically below 100μV.
- CHIP SELECT, READ, and WRITE inputs for easy microprocessor interfacing without additional logic.
- 2-byte, 12-bit conversion data provided over an 8-bit three-state output bus.
- Two converter busy flags facilitate polling of the converter's status.
Applications
The MAX178 is suitable for a variety of applications that require precise analog-to-digital conversion, such as:
- Industrial control systems
- Medical devices
- Aerospace and defense systems
- Automotive systems
- Data acquisition systems
Q & A
- What is the resolution of the MAX178 ADC?
The MAX178 is a 12-bit ADC.
- What is the sampling rate of the MAX178?
The sampling rate of the MAX178 is 17 kS/s.
- What is the analog input range of the MAX178?
The analog input range is 0V to +5V when using a +5V reference.
- Does the MAX178 require external adjustments for temperature compensation?
No, the MAX178 maintains true 12-bit performance over the full operating temperature range without external adjustments.
- What type of interface does the MAX178 use?
The MAX178 uses a parallel interface.
- How does the MAX178 reduce zero errors?
The MAX178 includes an auto-zero cycle in each conversion, which reduces zero errors to typically below 100μV.
- What is the operating temperature range of the MAX178?
The operating temperature range is -40°C ~ 85°C.
- What type of package is the MAX178BEWG available in?
The MAX178BEWG is available in a Small-Outline IC, Wide (0.3in) package.
- Does the MAX178 have built-in busy flags for status polling?
- Can the MAX178 be easily interfaced with microprocessors?
