Overview
The MAX147BEAP+ is a 12-bit data-acquisition system produced by Analog Devices Inc./Maxim Integrated. This device combines an 8-channel multiplexer, high-bandwidth track/hold, and a serial interface, making it suitable for a variety of data acquisition applications. The MAX147 operates from a single supply voltage ranging from +2.7V to +5.25V, offering flexibility in power supply design. It is designed for low power consumption and high conversion speed, making it an efficient choice for various electronic systems.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Supply Voltage | 2.7 | - | 5.25 | V |
| Conversion Time | 6 | - | 7.5 | µs |
| Full-Power Bandwidth | - | - | 2.25 | MHz |
| Small-Signal Bandwidth | - | - | 1.0 | MHz |
| Channel-to-Channel Crosstalk | -85 | - | -80 | dB |
| Spurious-Free Dynamic Range (SFDR) | -90 | - | -88 | dB |
| Operating Temperature Range | -40 | - | 85 | °C |
| Storage Temperature Range | -60 | - | 150 | °C |
| Lead Temperature (soldering, 10s) | - | - | 300 | °C |
Key Features
- 8-Channel Multiplexer: Supports single-ended or differential input configurations.
- High-Bandwidth Track/Hold: Ensures accurate sampling of high-frequency signals.
- Serial Interface: 4-wire interface compatible with SPI, QSPI, and MICROWIRE devices without external logic.
- Software Configurable Inputs: Analog inputs can be configured for unipolar or bipolar operation.
- Internal/External Clock: Can use either the internal clock or an external serial-interface clock for conversions.
- Low Power Consumption: Automatic shutdown at the end of a conversion and quick turn-on time to reduce supply current.
- Reference Buffer Amplifier: ±1.5% voltage-adjustment range for the reference voltage.
- Power-Down Modes: Hard-wired SHDN-bar pin and software-selectable power-down options.
Applications
- Data Acquisition Systems: Ideal for multi-channel data acquisition in various industrial, medical, and automotive applications.
- Industrial Automation: Used in control systems, monitoring, and automation where multiple analog inputs need to be processed.
- Medical Devices: Suitable for medical equipment requiring precise and low-power analog-to-digital conversion.
- Aerospace and Defense: Used in systems requiring high reliability and low power consumption.
Q & A
- What is the supply voltage range for the MAX147?
The MAX147 operates from a single supply voltage ranging from +2.7V to +5.25V.
- How many channels does the MAX147 support?
The MAX147 supports 8 channels, which can be configured as single-ended or differential inputs.
- What type of serial interface does the MAX147 use?
The MAX147 uses a 4-wire serial interface compatible with SPI, QSPI, and MICROWIRE devices.
- Can the MAX147 use an external clock for conversions?
Yes, the MAX147 can use either the internal clock or an external serial-interface clock for conversions.
- What is the conversion time of the MAX147?
The conversion time of the MAX147 is between 6 µs and 7.5 µs.
- Does the MAX147 have power-down modes?
Yes, the MAX147 has both hard-wired SHDN-bar pin and software-selectable power-down options.
- What is the operating temperature range of the MAX147?
The operating temperature range of the MAX147 is from -40°C to +85°C.
- Can the MAX147 be used in medical devices?
Yes, the MAX147 is suitable for medical devices requiring precise and low-power analog-to-digital conversion.
- How does the MAX147 manage power consumption during idle periods?
The MAX147 can be programmed to automatically shut down at the end of a conversion, reducing supply current to under 60 µA at reduced sampling rates.
- What type of packaging is available for the MAX147?
The MAX147 is available in 20-pin DIP and SSOP packages.
