Overview
The MAX1291BEEI, produced by Analog Devices Inc./Maxim Integrated, is a low-power, 12-bit analog-to-digital converter (ADC) designed for high-performance and low-power applications. This device features a successive-approximation ADC architecture, automatic power-down, and a fast wake-up time of 2µs. It operates with a single +3V analog supply and includes a +2.5V internal reference, making it ideal for battery-powered and data-acquisition systems. The MAX1291BEEI is known for its excellent dynamic performance, low power consumption, and small package size, making it suitable for applications with demanding power and space requirements.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Resolution | 12-bit | |
| Sampling Rate | 250ksps | |
| Analog Supply Voltage | +2.7V to +3.6V | V |
| Digital Supply Voltage | +1.8V to +5.5V | V |
| Power Consumption (at 250ksps) | 5.7mW | mW |
| Power Consumption (in shutdown mode) | < 10µA | µA |
| Internal Reference Voltage | +2.5V | V |
| Interface Type | Byte-wide parallel | |
| Package Type | 28-pin QSOP | |
| Operating Temperature Range | 0°C to +70°C | °C |
Key Features
- Successive-Approximation ADC: Provides high accuracy and speed.
- Automatic Power-Down and Fast Wake-Up: Reduces power consumption and allows for quick recovery.
- Internal +2.5V Reference: Ensures stable and accurate conversions.
- Byte-Wide Parallel Interface: High-speed data transfer.
- Software-Configurable Analog Inputs: Supports unipolar/bipolar and single-ended/pseudo-differential operation.
- Low Power Consumption: Ideal for battery-powered and data-acquisition applications.
- Small Package Size: 28-pin QSOP package for compact designs.
Applications
- Battery-Powered Systems: Suitable for devices requiring low power consumption.
- Data-Acquisition Systems: Ideal for applications needing high-speed and accurate data conversion.
- Industrial Automation: Used in various industrial control and monitoring systems.
- Medical Devices: Applicable in medical equipment requiring precise and low-power ADCs.
- Portable Electronics: Suitable for handheld devices and other portable electronic systems.
Q & A
- What is the resolution of the MAX1291BEEI ADC?
The MAX1291BEEI has a 12-bit resolution.
- What is the maximum sampling rate of the MAX1291BEEI?
The maximum sampling rate is 250ksps.
- What is the power consumption of the MAX1291BEEI at the maximum sampling rate?
The power consumption is 5.7mW at 250ksps.
- How does the MAX1291BEEI manage power consumption during idle periods?
The device features automatic power-down and fast wake-up, reducing power consumption to under 10µA in shutdown mode.
- What types of analog inputs does the MAX1291BEEI support?
The device supports software-configurable analog inputs for unipolar/bipolar and single-ended/pseudo-differential operation.
- What is the package type of the MAX1291BEEI?
The MAX1291BEEI is available in a 28-pin QSOP package.
- What is the operating temperature range of the MAX1291BEEI?
The operating temperature range is 0°C to +70°C.
- How does the MAX1291BEEI interface with digital systems?
The device features a VLOGIC pin that allows it to interface directly with a +1.8V to +5.5V digital supply.
- What are some common applications of the MAX1291BEEI?
Common applications include battery-powered systems, data-acquisition systems, industrial automation, medical devices, and portable electronics.
- Does the MAX1291BEEI have an internal clock?
Yes, the MAX1291BEEI includes an on-chip clock.
