Overview
The MAX149BMAP/PR, produced by Analog Devices Inc./Maxim Integrated, is a 10-bit data-acquisition system that integrates an 8-channel multiplexer, high-bandwidth track/hold circuitry, and a serial interface. This device operates from a single supply voltage of +2.7V to +5.25V and supports sampling rates up to 133ksps. The MAX149BMAP/PR is designed for low power consumption and high conversion speed, making it suitable for a variety of applications requiring precise analog-to-digital conversion.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Supply Voltage | +2.7V to +5.25V | V |
| Resolution | 10 Bits | |
| Sampling Rate | Up to 133ksps | ksps |
| Analog Input Configuration | Unipolar/Bipolar, Single-Ended/Differential | |
| Input Voltage Range (Unipolar) | 0 to VREF | V |
| Input Voltage Range (Bipolar) | ±VREF/2 | V |
| Operating Temperature Range | -55°C to +125°C | °C |
| Package Types | 20-pin PDIP, 20-pin SSOP | |
| Power Consumption (Operating) | 1.2mA to 3.0mA | mA |
| Power Consumption (Full Power-Down) | 3.5µA to 15µA | µA |
Key Features
- 8-channel multiplexer with high-bandwidth track/hold circuitry
- Software configurable for unipolar/bipolar and single-ended/differential operation
- Internal 2.5V reference (MAX149) or external reference option (MAX148)
- 4-wire serial interface compatible with SPI, QSPI, and MICROWIRE without external logic
- Serial-strobe output for direct connection to TMS320-family digital signal processors
- Low power consumption with automatic shutdown at the end of a conversion
- Quick turn-on time allowing shutdown between conversions
Applications
The MAX149BMAP/PR is versatile and can be used in various applications, including:
- Data acquisition systems
- Industrial control systems
- Medical devices requiring precise analog-to-digital conversion
- Automotive systems
- Embedded systems where low power consumption and high conversion speed are critical
Q & A
- What is the supply voltage range for the MAX149BMAP/PR?
The supply voltage range is +2.7V to +5.25V. - What is the maximum sampling rate of the MAX149BMAP/PR?
The maximum sampling rate is up to 133ksps. - Can the analog inputs be configured for different modes?
Yes, the analog inputs can be software configured for unipolar/bipolar and single-ended/differential operation. - What types of serial interfaces are supported by the MAX149BMAP/PR?
The device supports SPI, QSPI, and MICROWIRE serial interfaces. - Does the MAX149BMAP/PR have an internal reference voltage?
Yes, the MAX149 has an internal 2.5V reference, while the MAX148 requires an external reference. - How does the MAX149BMAP/PR manage power consumption?
The device has automatic shutdown at the end of a conversion and can be programmed for power-down, reducing supply current to under 60µA at reduced sampling rates. - What are the available package types for the MAX149BMAP/PR?
The device is available in 20-pin PDIP and 20-pin SSOP packages. - What is the operating temperature range for the MAX149BMAP/PR?
The operating temperature range is -55°C to +125°C. - Can the MAX149BMAP/PR be used in industrial control systems?
Yes, it is suitable for industrial control systems due to its precision and reliability. - Is the MAX149BMAP/PR compatible with digital signal processors?
Yes, it has a serial-strobe output for direct connection to TMS320-family digital signal processors.
