Overview
The MAX1033EUP+ is a multirange, low-power, 14-bit successive-approximation analog-to-digital converter (ADC) produced by Analog Devices Inc./Maxim Integrated. This device is part of the MAX1032/MAX1033 family and is designed for high accuracy and flexibility in various data acquisition applications. It features a fully differential successive-approximation register (SAR) conversion technique and an on-chip track-and-hold (T/H) block, enabling the conversion of voltage signals into digital data with high precision.
Key Specifications
| Parameter | Specification |
|---|---|
| Number of Channels | 4 single-ended or 2 differential channels |
| Resolution | 14-bit |
| Conversion Technique | Successive-approximation register (SAR) |
| Input Voltage Range | Seven programmable single-ended input ranges; ±3 x VREF differential input voltage range |
| Input Resistance | 17kΩ |
| Power Supplies | Separate AVDD1, AVDD2, DVDD, and DVDDO supplies; can be connected together for convenience |
| Interface | SPI-/QSPI-/MICROWIRE-compatible serial interface |
| External Reference Voltage | Up to 4.096V; must be > 3.8V for optimal performance |
| Fault Tolerance | ±16.5V fault tolerant on all analog input channels |
Key Features
- Software-programmable channel and data-acquisition configurations
- Support for both single-ended and differential conversions with programmable unipolar and bipolar signal ranges
- Switched-capacitor track-and-hold (T/H) architecture for stable analog input signal storage
- Low-noise environment maintained through separate power supplies for each section of circuitry
- Fault tolerance up to ±16.5V on all analog input channels, ensuring that a fault condition on one channel does not affect the conversion result of other channels
- Compatibility with SPI, QSPI, and MICROWIRE serial interfaces for easy microprocessor control
Applications
The MAX1033EUP+ is suitable for a variety of applications, including industrial control systems, medical devices, and data acquisition systems. It is particularly useful in scenarios where high accuracy and flexibility in input voltage ranges are required. For example, in industrial-control applications, it can interface with 0 to 10V signals by buffering the input through a low-offset differential amplifier. Additionally, its ability to dynamically adjust the input range makes it versatile for different measurement needs.
Q & A
- What is the resolution of the MAX1033EUP+ ADC?
The MAX1033EUP+ has a resolution of 14 bits. - How many channels does the MAX1033EUP+ support?
The MAX1033EUP+ supports 4 single-ended or 2 differential channels. - What is the input voltage range for the MAX1033EUP+?
The MAX1033EUP+ has seven programmable single-ended input ranges and a ±3 x VREF differential input voltage range. - What type of conversion technique does the MAX1033EUP+ use?
The MAX1033EUP+ uses a successive-approximation register (SAR) conversion technique. - Is the MAX1033EUP+ fault tolerant?
Yes, the MAX1033EUP+ is fault tolerant up to ±16.5V on all analog input channels. - What type of serial interface does the MAX1033EUP+ support?
The MAX1033EUP+ supports SPI, QSPI, and MICROWIRE serial interfaces. - How can the MAX1033EUP+ be powered?
The MAX1033EUP+ can be powered using separate AVDD1, AVDD2, DVDD, and DVDDO supplies, or these can be connected together for convenience. - What is the maximum external reference voltage for the MAX1033EUP+?
The maximum external reference voltage is 4.096V, but it must be greater than 3.8V for optimal performance. - Can the MAX1033EUP+ handle low-frequency noise?
Yes, the MAX1033EUP+ can handle low-frequency noise by using bypass capacitors and additional filtering if necessary. - In what applications is the MAX1033EUP+ commonly used?
The MAX1033EUP+ is commonly used in industrial control systems, medical devices, and data acquisition systems.
