Overview
The MAX1139KEEE+T is a low-power, 10-bit, multichannel analog-to-digital converter (ADC) produced by Analog Devices Inc./Maxim Integrated. This device is part of the MAX1136–MAX1139 family, which features internal track/hold (T/H), voltage reference, clock, and an I²C-compatible 2-wire serial interface. The MAX1139 is designed for high-performance and low-power applications, making it suitable for a variety of industrial and consumer electronics uses.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Resolution | 10-bit | |
| Number of Analog Input Channels | 12 | |
| Supply Voltage Range | 2.7V to 3.6V (MAX1139), 4.5V to 5.5V (MAX1138) | V |
| Internal Reference Voltage | 2.048V (MAX1139), 4.096V (MAX1138) | V |
| External Reference Voltage Range | 1V to VDD | V |
| Sampling Rate | Up to 94.4 ksps | sps |
| Supply Current at Maximum Sampling Rate | 670 µA | µA |
| Supply Current at Low Throughput Rates | < 1 µA | µA |
| Operating Temperature Range | -40°C to +85°C | °C |
| Package Type | 16-pin QSOP | |
| I²C Interface Speed | Up to 1.7 MHz | Hz |
Key Features
- High-Speed I²C-Compatible Serial Interface with data rates up to 1.7 MHz
- Single-Supply Operation: 2.7V to 3.6V (MAX1139) or 4.5V to 5.5V (MAX1138)
- Internal Track/Hold, Voltage Reference, and Clock
- Software Configurable for Unipolar or Bipolar, Single-Ended or Differential Operation
- AutoShutdown™ Feature to Reduce Supply Current Between Conversions
- Low Power Consumption: 670 µA at maximum sampling rate, less than 1 µA at low throughput rates
- Fully Differential Analog Inputs
- Extended Temperature Range: -40°C to +85°C
Applications
- Industrial Automation and Control Systems
- Medical Devices and Diagnostic Equipment
- Consumer Electronics and Appliances
- Aerospace and Defense Systems
- Automotive Systems and Sensors
- Instrumentation and Measurement Devices
Q & A
- What is the resolution of the MAX1139 ADC?
The MAX1139 is a 10-bit analog-to-digital converter.
- How many analog input channels does the MAX1139 have?
The MAX1139 has 12 analog input channels.
- What is the supply voltage range for the MAX1139?
The supply voltage range for the MAX1139 is 2.7V to 3.6V.
- What is the internal reference voltage for the MAX1139?
The internal reference voltage for the MAX1139 is 2.048V.
- What is the maximum sampling rate of the MAX1139?
The maximum sampling rate of the MAX1139 is up to 94.4 ksps.
- How much current does the MAX1139 consume at maximum sampling rate?
The MAX1139 consumes 670 µA at the maximum sampling rate.
- What is the operating temperature range of the MAX1139?
The operating temperature range of the MAX1139 is -40°C to +85°C.
- What type of package is the MAX1139 available in?
The MAX1139 is available in a 16-pin QSOP package.
- Does the MAX1139 support differential operation?
Yes, the MAX1139 supports fully differential analog inputs and can be configured for differential operation.
- What is the purpose of the AutoShutdown™ feature in the MAX1139?
The AutoShutdown™ feature powers down the device between conversions, reducing supply current to less than 1 µA at low throughput rates.
