Overview
The MAX1240AESA/V+ is a low-power, 12-bit analog-to-digital converter (ADC) produced by Analog Devices Inc./Maxim Integrated. This device is part of the MAX1240/MAX1241 series, known for their high performance and low power consumption. The MAX1240 operates with a single supply voltage ranging from +2.7V to +3.6V, making it suitable for a variety of applications where power efficiency is crucial.
The MAX1240 features a successive-approximation ADC with a conversion time of 7.5µs and a fast track/hold time of 1.5µs. It also includes an on-chip clock and a high-speed, 3-wire serial interface compatible with SPI™, QSPI™, and MICROWIRE™ protocols, allowing for easy integration with microcontrollers.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Supply Voltage | 2.7 to 3.6 | V |
| Number of Converters | 1 | - |
| Resolution | 12-bit | - |
| Conversion Time | 7.5 | µs |
| Track/Hold Time | 1.5 | µs |
| Maximum Sampling Speed | 73 | ksps |
| Power Consumption (VDD = 3V) | 37 | mW |
| Shutdown Current | 2 | µA |
| Internal Reference Voltage | 2.5 | V |
| Package Type | 8-SOIC | - |
Key Features
- Low power consumption: Only 37mW at 73ksps maximum sampling speed and 2µA in shutdown mode.
- High-speed conversion: 7.5µs successive-approximation ADC and 1.5µs track/hold time.
- On-chip clock and high-speed 3-wire serial interface compatible with SPI™, QSPI™, and MICROWIRE™.
- Internal 2.5V reference voltage for the MAX1240.
- Small package size: Available in 8-pin SOIC packages.
- Excellent AC characteristics, making it ideal for remote-sensor and data-acquisition applications.
Applications
The MAX1240AESA/V+ is well-suited for various applications requiring low power consumption and high performance. These include:
- Remote-sensor applications where power efficiency is critical.
- Data-acquisition systems that demand high accuracy and low power.
- Circuits with stringent power consumption and space requirements.
- Industrial automation and control systems.
- Medical devices and portable electronics.
Q & A
- What is the operating supply voltage range for the MAX1240AESA/V+?
The operating supply voltage range is from +2.7V to +3.6V.
- What is the resolution of the MAX1240AESA/V+ ADC?
The resolution is 12 bits.
- What is the maximum sampling speed of the MAX1240AESA/V+?
The maximum sampling speed is 73 ksps.
- How much power does the MAX1240AESA/V+ consume at maximum sampling speed?
It consumes 37mW at VDD = 3V and 73ksps.
- What is the shutdown current of the MAX1240AESA/V+?
The shutdown current is 2µA.
- Does the MAX1240AESA/V+ have an internal reference voltage?
Yes, the MAX1240 has an internal 2.5V reference voltage.
- What type of serial interface does the MAX1240AESA/V+ use?
The MAX1240AESA/V+ uses a high-speed 3-wire serial interface compatible with SPI™, QSPI™, and MICROWIRE™.
- In what package types is the MAX1240AESA/V+ available?
The MAX1240AESA/V+ is available in 8-pin SOIC packages.
- What are some typical applications for the MAX1240AESA/V+?
Typical applications include remote-sensor applications, data-acquisition systems, and circuits with stringent power and space requirements.
- Is the MAX1240AESA/V+ compatible with microcontrollers?
Yes, it is compatible with standard microcontroller I/O ports through its 3-wire serial interface.
