Overview
The MAX1231AEEG+ is a 12-bit analog-to-digital converter (ADC) produced by Analog Devices Inc./Maxim Integrated. This device is part of the MAX1227/MAX1229/MAX1231 family, which features high-performance, multichannel ADCs. The MAX1231AEEG+ is distinguished by its 16 configurable input channels, making it suitable for a wide range of applications requiring multiple analog input conversions.
The device operates from a single +3V supply and includes an internal reference, an internal temperature sensor, and a 10MHz SPI/QSPI/MICROWIRE-compatible serial interface. It supports both single-ended and differential input configurations in unipolar or bipolar modes.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Resolution | Number of bits | 12 bits |
| Sampling Rate | Maximum sampling rate using external clock | 300 ksps |
| Input Channels | Number of configurable input channels | 16 channels |
| Input Configuration | Single-ended or differential, unipolar or bipolar | Configurable |
| Supply Voltage | Operating voltage range | +2.7V to +3.6V |
| Power Consumption | Current at 300 ksps | 1 mA |
| Temperature Range | Operating temperature range | -40°C to +85°C |
| Interface | Type of serial interface | 10MHz SPI/QSPI/MICROWIRE-compatible |
| Package | Available packages | 28-pin 5mm x 5mm TQFN with exposed pad, 24-pin QSOP |
Key Features
- Internal Temperature Sensor: ±0.7°C accuracy
- FIFO Buffer: 16-entry first-in/first-out buffer
- Analog Multiplexer: True differential track/hold with 16-, 12-, or 8-channel single-ended and 8-, 6-, or 4-channel true differential configurations
- Scan Mode, Internal Averaging, and Internal Clock: Enhanced functionality for data acquisition
- Low-Power Operation: Single +3V supply with 1 mA current at 300 ksps
- Internal Reference: 2.5V internal reference or external differential reference option
- AutoShutdown™: Reduces power consumption between conversions
Applications
- System Supervision: Monitoring system health and performance
- Data-Acquisition Systems: Collecting and processing analog data in various environments
- Industrial Control Systems: Controlling and monitoring industrial processes
- Patient Monitoring: Medical devices requiring precise analog-to-digital conversion
- Data Logging: Recording and storing analog data over time
- Instrumentation: Precision measurement and control in scientific and industrial instruments
Q & A
- What is the resolution of the MAX1231AEEG+ ADC?
The MAX1231AEEG+ has a 12-bit resolution.
- What is the maximum sampling rate of the MAX1231AEEG+?
The maximum sampling rate is 300 ksps using an external clock.
- How many input channels does the MAX1231AEEG+ have?
The MAX1231AEEG+ has 16 configurable input channels.
- What types of input configurations are supported by the MAX1231AEEG+?
The device supports single-ended or differential inputs in unipolar or bipolar modes.
- What is the operating voltage range of the MAX1231AEEG+?
The device operates from a +2.7V to +3.6V supply.
- What is the power consumption of the MAX1231AEEG+ at 300 ksps?
The device consumes 1 mA at 300 ksps.
- What is the temperature range over which the MAX1231AEEG+ is specified?
The device is specified over the extended -40°C to +85°C temperature range.
- What type of serial interface does the MAX1231AEEG+ use?
The device uses a 10MHz SPI/QSPI/MICROWIRE-compatible serial interface.
- What packages are available for the MAX1231AEEG+?
The device is available in 28-pin 5mm x 5mm TQFN with exposed pad and 24-pin QSOP packages.
- Does the MAX1231AEEG+ have an internal temperature sensor?
Yes, the device includes an internal temperature sensor with ±0.7°C accuracy.
