Overview
The MAX111ACAP+ is a low-cost, 2-channel, 14-bit serial analog-to-digital converter (ADC) produced by Analog Devices Inc./Maxim Integrated. This device is part of the MAX110/MAX111 family, which is 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 14-bit resolution plus overrange without requiring external components.
Key Specifications
| Parameter | Value |
|---|---|
| Supply Voltage | Single +5V |
| Input Range (Differential) | ±1.5V |
| Input Range (Single-Ended) | 0V to +1.5V |
| Resolution | 14-bit plus sign and overrange |
| Linearity | 0.05% |
| Operating Current | 640µA |
| Shutdown Current | 4µA |
| Conversion Rate | Up to 50 conversions/sec |
| Interface Compatibility | SPI™, QSPI™, and MICROWIRE™ |
| Package Options | 16-pin DIP, SO, 20-pin SSOP |
Key Features
- Single +5V supply operation
- Two differential input channels
- 14-bit resolution plus sign and overrange
- Low power consumption: 640µA operating, 4µA in shutdown mode
- Up to 50 conversions per second
- 50Hz/60Hz rejection
- Auto-calibration mode with no external components required
- Fast serial interface compatible with SPI™, QSPI™, and MICROWIRE™
- 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
Q & A
- What is the supply voltage for the MAX111ACAP+?
The MAX111ACAP+ operates with a single +5V supply.
- What is the input range for the MAX111ACAP+?
The MAX111ACAP+ can convert differential analog signals in the ±1.5V range or single-ended signals in the 0V to +1.5V range.
- What is the resolution of the MAX111ACAP+?
The MAX111ACAP+ has a resolution of 14-bit plus sign and overrange.
- How much current does the MAX111ACAP+ consume during operation and in shutdown mode?
The MAX111ACAP+ consumes 640µA during operation and 4µA in shutdown mode.
- What is the conversion rate of the MAX111ACAP+?
The MAX111ACAP+ can perform up to 50 conversions per second.
- Is the MAX111ACAP+ compatible with any specific serial interfaces?
Yes, the MAX111ACAP+ is compatible with SPI™, QSPI™, and MICROWIRE™ serial interfaces.
- What package options are available for the MAX111ACAP+?
The MAX111ACAP+ is available in 16-pin DIP, SO, and 20-pin SSOP packages.
- Does the MAX111ACAP+ require external components for calibration?
No, the MAX111ACAP+ uses an internal auto-calibration technique and does not require external components.
- What are some typical applications of the MAX111ACAP+?
The MAX111ACAP+ is typically used in process control, weigh scales, panel meters, data-acquisition systems, and temperature measurement.
- How does the MAX111ACAP+ handle power consumption in battery-powered applications?
The MAX111ACAP+ is designed for low power consumption, making it ideal for battery-powered applications with a shutdown current of only 4µA.
