Overview
The MAX111BEWE+T is a low-cost, 2-channel, 14-bit serial analog-to-digital converter (ADC) produced by Analog Devices Inc./Maxim Integrated. This device operates with a single +5V supply and is designed for high-resolution battery-powered or remote-sensing applications. It features an internal auto-calibration technique that achieves 14-bit resolution plus overrange without the need for external components. The MAX111 is known for its low power consumption, with an operating supply current of 640µA and a shutdown current of 4µA, making it ideal for power-sensitive applications.
Key Specifications
| Parameter | Value | Notes |
|---|---|---|
| Resolution | 14-bit + sign and overrange | |
| Supply Voltage | +5V | |
| Operating Supply Current | 640µA | |
| Shutdown Current | 4µA | |
| Analog Input Range | Differential: ±1.5V, Single-ended: 0V to +1.5V | |
| Conversion Rate | Up to 50 conversions/sec | |
| Linearity | 0.05% | |
| Package Type | Small-Outline IC, Wide (0.3in) | |
| Operating Temperature Range | 0°C to +70°C |
Key Features
- Single +5V supply operation
- Two differential input channels
- 14-bit resolution plus sign and overrange
- Low power consumption: 640µA operating, 4µA shutdown
- Auto-calibration mode with no external components required
- Fast serial interface compatible with SPI™, QSPI™, and MICROWIRE™
- 50Hz/60Hz rejection
- Available in 16-pin DIP, SO, and 20-pin SSOP packages
Applications
- Process Control
- Weigh Scales
- Panel Meters
- Data-Acquisition Systems
- Temperature Measurement
Q & A
- What is the resolution of the MAX111 ADC?
The MAX111 ADC has a resolution of 14 bits plus sign and overrange.
- What is the operating supply voltage for the MAX111?
The MAX111 operates with a single +5V supply.
- What is the typical operating supply current of the MAX111?
The typical operating supply current is 640µA.
- What is the shutdown current of the MAX111?
The shutdown current is 4µA.
- What are the analog input ranges for the MAX111?
The MAX111 can convert differential analog signals in the ±1.5V range or single-ended signals in the 0V to +1.5V range.
- How many conversions per second can the MAX111 perform?
The MAX111 can perform up to 50 conversions per second.
- What is the linearity of the MAX111?
The linearity of the MAX111 is 0.05%.
- What are the available package types for the MAX111?
The MAX111 is available in 16-pin DIP, SO, and 20-pin SSOP packages.
- What is the operating temperature range for the MAX111?
The operating temperature range is 0°C to +70°C.
- Is the MAX111 compatible with various serial interfaces?
Yes, the MAX111 is compatible with SPI™, QSPI™, and MICROWIRE™ interfaces.
