Overview
The MAX111BEWE+ is a 14-bit, low-cost, 2-channel analog-to-digital converter (ADC) produced by Analog Devices Inc./Maxim Integrated. This device is part of the MAX110/MAX111 family, known for its high resolution and low power consumption, making it ideal for battery-powered or remote-sensing applications. The MAX111 operates with a single +5V supply and can convert differential analog signals in the ±1.5V range or single-ended signals in the 0V to +1.5V range. It features an internal auto-calibration technique that achieves high accuracy without the need for external components.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 14-bit plus sign and overrange |
| Supply Voltage | Single +5V |
| Input Range (Differential) | ±1.5V |
| Input Range (Single-Ended) | 0V to +1.5V |
| Supply Current | 640µA (active), 4µA (power-down) |
| Conversion Rate | Up to 50 conversions/sec |
| Linearity | 0.05% |
| Interface Compatibility | SPI™, QSPI™, MICROWIRE™ |
| Package Type | Small-Outline IC, Wide (0.3in) |
Key Features
- Internal auto-calibration technique for high accuracy without external components
- Low power consumption: 640µA active, 4µA in power-down mode
- Fast serial interface compatible with SPI™, QSPI™, and MICROWIRE™
- Two differential input channels
- Up to 50 conversions per second
- 50Hz/60Hz rejection
- No external components required
- Available in space-saving 16-pin DIP, SO, and 20-pin SSOP packages
Applications
- Process Control
- Weigh Scales
- Panel Meters
- Data-Acquisition Systems
- Temperature Measurement
- Battery-powered or remote-sensing applications
Q & A
- What is the resolution of the MAX111BEWE+ ADC?
The MAX111BEWE+ has a 14-bit resolution plus sign and overrange.
- What is the supply voltage for the MAX111BEWE+?
The MAX111BEWE+ operates with a single +5V supply.
- What is the input range for differential signals on the MAX111BEWE+?
The input range for differential signals is ±1.5V.
- What is the input range for single-ended signals on the MAX111BEWE+?
The input range for single-ended signals is 0V to +1.5V.
- How much power does the MAX111BEWE+ consume in active and power-down modes?
The MAX111BEWE+ consumes 640µA in active mode and 4µA in power-down mode.
- What is the conversion rate of the MAX111BEWE+?
The MAX111BEWE+ can perform up to 50 conversions per second.
- What interfaces is the MAX111BEWE+ compatible with?
The MAX111BEWE+ is compatible with SPI™, QSPI™, and MICROWIRE™ interfaces.
- What package types are available for the MAX111BEWE+?
The MAX111BEWE+ is available in Small-Outline IC, Wide (0.3in) packages.
- Does the MAX111BEWE+ require external components for calibration?
No, the MAX111BEWE+ uses an internal auto-calibration technique and does not require external components.
- What are some common applications for the MAX111BEWE+?
Common applications include process control, weigh scales, panel meters, data-acquisition systems, and temperature measurement.
