Overview
The MAX1238EEE+ is a low-power, 12-channel, 12-bit analog-to-digital converter (ADC) designed by Analog Devices Inc./Maxim Integrated. This device operates within a voltage range of 4.5V to 5.5V and is packaged in a 16-pin QSOP. It features an internal track/hold (T/H), voltage reference, clock, and an I²C-compatible 2-wire serial interface. The ADC is highly efficient, consuming only 670µA at the maximum sampling rate of 94.4ksps, and it includes an AutoShutdown feature that reduces supply current to less than 1µA at low throughput rates.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 12-bit |
| Number of Channels | 12 |
| Sampling Rate | Up to 94.4ksps |
| Supply Voltage | 4.5V to 5.5V |
| Package Type | 16-pin QSOP |
| Operating Temperature Range | -40°C to 85°C |
| Internal Reference Voltage | 4.096V |
| Interface Type | I²C-compatible 2-wire serial interface |
| Maximum Supply Current | 670µA at 94.4ksps |
| AutoShutdown Current |
Key Features
- High-Speed I²C-Compatible Serial Interface with fast mode (400kHz) and high-speed mode (1.7MHz).
- Internal track/hold (T/H), voltage reference, and clock.
- Software configurable for unipolar or bipolar, and single-ended or differential operation.
- Full-scale analog input range determined by the internal reference or an externally applied reference voltage ranging from 1V to VDD.
- AutoShutdown feature to reduce power consumption between conversions.
- Internal FIFO with channel scan mode.
Applications
- Medical instruments
- Battery-powered test equipment
- Solar-powered remote systems
- Received signal-strength indicators
- System supervision
- Signal processing and industrial applications
- Portable devices
Q & A
- What is the resolution of the MAX1238EEE+ ADC?
The MAX1238EEE+ has a resolution of 12 bits. - How many analog input channels does the MAX1238EEE+ have?
The MAX1238EEE+ has 12 analog input channels. - What is the maximum sampling rate of the MAX1238EEE+?
The maximum sampling rate is up to 94.4ksps. - What is the supply voltage range for the MAX1238EEE+?
The supply voltage range is from 4.5V to 5.5V. - What type of package does the MAX1238EEE+ come in?
The MAX1238EEE+ is packaged in a 16-pin QSOP. - What is the operating temperature range for the MAX1238EEE+?
The operating temperature range is from -40°C to 85°C. - Does the MAX1238EEE+ have an internal voltage reference?
Yes, the MAX1238EEE+ has an internal voltage reference of 4.096V. - What interface type does the MAX1238EEE+ use?
The MAX1238EEE+ uses an I²C-compatible 2-wire serial interface. - How much current does the MAX1238EEE+ consume at maximum sampling rate?
The MAX1238EEE+ consumes 670µA at the maximum sampling rate of 94.4ksps. - What is the AutoShutdown feature in the MAX1238EEE+?
The AutoShutdown feature powers down the device between conversions, reducing supply current to less than 1µA at low throughput rates.
