Overview
The MAX1291ACEI is a low-power, 12-bit analog-to-digital converter (ADC) produced by Analog Devices Inc./Maxim Integrated. This device is part of the MAX1291/MAX1293 series, known for their high performance, low power consumption, and compact design. The MAX1291ACEI features a successive-approximation ADC architecture, automatic power-down, fast wake-up, and an on-chip clock. It is designed to operate with a single +3V analog supply and can interface directly with digital supplies ranging from +1.8V to +5.5V.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Number of Converters | 1 | - |
| Resolution | 12-bit | - |
| Number of Input Channels | 8 (single-ended), 4 (pseudo-differential) | - |
| Operating Supply Voltage | 2.7 to 3.6 | V |
| Sampling Rate | 250 ksps | - |
| Power Dissipation | 5.7 mW (at max sampling rate) | mW |
| Package Type | 28-pin QSOP | - |
| Internal Reference Voltage | +2.5V | V |
| Interface Type | High-speed, byte-wide parallel interface | - |
Key Features
- Low power consumption: 5.7 mW at the maximum sampling rate of 250 ksps.
- Automatic power-down and fast wake-up (2 µs) to reduce power consumption between conversions.
- Software-selectable power-down modes to further reduce supply current.
- High-speed, byte-wide parallel interface for efficient data transfer.
- On-chip clock and +2.5V internal reference for simplified system design.
- Software-configurable analog inputs for unipolar/bipolar and single-ended/pseudo-differential operation.
- Compact 28-pin QSOP package suitable for space-constrained applications.
Applications
The MAX1291ACEI is ideal for various applications requiring low power consumption and high performance, such as:
- Battery-powered devices.
- Data-acquisition systems.
- Industrial control systems.
- Medical devices.
- Portable instrumentation.
Q & A
- What is the resolution of the MAX1291ACEI ADC?
The MAX1291ACEI has a 12-bit resolution. - How many input channels does the MAX1291ACEI have?
The MAX1291ACEI has 8 single-ended input channels or 4 pseudo-differential input channels. - What is the operating supply voltage range for the MAX1291ACEI?
The operating supply voltage range is from 2.7V to 3.6V. - What is the maximum sampling rate of the MAX1291ACEI?
The maximum sampling rate is 250 ksps. - How much power does the MAX1291ACEI consume at its maximum sampling rate?
The power consumption is 5.7 mW at the maximum sampling rate. - What type of interface does the MAX1291ACEI use?
The MAX1291ACEI uses a high-speed, byte-wide parallel interface. - Does the MAX1291ACEI have an internal reference voltage?
Yes, the MAX1291ACEI has an internal +2.5V reference voltage. - What is the package type of the MAX1291ACEI?
The MAX1291ACEI is packaged in a 28-pin QSOP. - Can the MAX1291ACEI be used in battery-powered devices?
Yes, the MAX1291ACEI is suitable for battery-powered devices due to its low power consumption. - Is the MAX1291ACEI configurable for different input types?
Yes, the MAX1291ACEI can be configured for unipolar/bipolar and single-ended/pseudo-differential input operations.
