Overview
The MAX1237KEUA+ is a low-power, 12-bit, multichannel analog-to-digital converter (ADC) produced by Analog Devices Inc./Maxim Integrated. This device is part of the MAX1236–MAX1239 series, which features internal track/hold (T/H), voltage reference, clock, and an I²C-compatible 2-wire serial interface. The MAX1237KEUA+ operates from a single supply voltage of 2.7V to 3.6V and is designed for applications requiring high accuracy and low power consumption. It is available in an 8-pin µMAX package and is guaranteed over the extended temperature range of -40°C to +85°C.
Key Specifications
| Parameter | Value | Notes |
|---|---|---|
| Resolution | 12-bit | |
| Number of Analog Input Channels | 4 | |
| Supply Voltage Range | 2.7V to 3.6V | |
| Internal Reference Voltage | 2.048V | |
| External Reference Voltage Range | 1V to VDD | |
| Sampling Rate | Up to 94.4ksps | |
| Supply Current at 94.4ksps | 670µA (typ) | |
| Supply Current at Low Throughput Rates | < 1µA | AutoShutdown™ mode |
| Operating Temperature Range | -40°C to +85°C | |
| Package Type | 8-pin µMAX |
Key Features
- Low power consumption with AutoShutdown™ feature to reduce supply current to less than 1µA at low throughput rates.
- Internal track/hold (T/H), voltage reference, and clock, reducing the need for external components.
- I²C-compatible 2-wire serial interface for easy communication and control.
- Fully differential analog inputs, software configurable for unipolar or bipolar, and single-ended or differential operation.
- High accuracy with a 12-bit resolution and internal reference voltage of 2.048V.
Applications
The MAX1237KEUA+ is suitable for a variety of applications requiring precise analog-to-digital conversion with low power consumption. These include:
- Industrial automation and control systems.
- Medical devices and diagnostic equipment.
- Aerospace and defense systems.
- Automotive systems, especially those requiring high reliability and low power consumption.
- Consumer electronics, such as smart home devices and IoT applications.
Q & A
- What is the resolution of the MAX1237KEUA+ ADC?
The MAX1237KEUA+ has a 12-bit resolution.
- How many analog input channels does the MAX1237KEUA+ have?
The MAX1237KEUA+ has 4 analog input channels.
- What is the supply voltage range for the MAX1237KEUA+?
The supply voltage range is 2.7V to 3.6V.
- What is the internal reference voltage of the MAX1237KEUA+?
The internal reference voltage is 2.048V.
- What is the maximum sampling rate of the MAX1237KEUA+?
The maximum sampling rate is up to 94.4ksps.
- How much current does the MAX1237KEUA+ consume at the maximum sampling rate?
The device consumes 670µA (typ) at the maximum sampling rate of 94.4ksps.
- What is the operating temperature range of the MAX1237KEUA+?
The operating temperature range is -40°C to +85°C.
- What package type is the MAX1237KEUA+ available in?
The MAX1237KEUA+ is available in an 8-pin µMAX package.
- Can the MAX1237KEUA+ be configured for different input modes?
Yes, the device can be software configured for unipolar or bipolar, and single-ended or differential operation.
- Does the MAX1237KEUA+ have any power-saving features?
Yes, the device features AutoShutdown™, which powers down the device between conversions, reducing supply current to less than 1µA at low throughput rates.
