Overview
The MAX135EWI is a 15-bit, binary-output analog-to-digital converter (ADC) produced by Analog Devices Inc./Maxim Integrated. This CMOS ADC utilizes multi-slope integration, which provides low-noise and high-resolution conversions. It is designed to operate at a rate of up to 16 conversions per second, although it can function at rates up to six times higher. The MAX135EWI features low power consumption, with a maximum supply current of 125µA during normal operation and 10µA in sleep mode. Its high resolution and compact design make it suitable for various applications requiring precise analog-to-digital conversion.
Key Specifications
| Specification | Value |
|---|---|
| Resolution | 15 bits |
| Conversion Rate | Up to 16 conversions per second (can operate up to 6 times this rate) |
| Supply Current | 125µA (normal operation), 10µA (sleep mode) |
| Full Scale Voltage | 300mV |
| LSB Value | 15µV |
| Integral Nonlinearity (INL) | ±2 LSB |
| Package Type | 28-SOIC |
| Operating Temperature | -40℃ to +85℃ |
| Data Interface | 8-bit parallel data bus, three control lines |
| Output Coding | Two's complement |
Key Features
- Multi-slope integration for low-noise and high-resolution conversions.
- Low power consumption with 125µA maximum supply current during normal operation and 10µA in sleep mode.
- Simple 8-bit parallel data bus and three control lines for easy interface with microprocessors.
- Two's complement output coding for simplified bipolar measurements.
- High resolution achievable through Super LSBs with data averaging, up to 18-bit resolution.
Applications
The MAX135EWI is ideal for various applications that require high-resolution and low-noise analog-to-digital conversion. These include data loggers, numerical control systems, weight scales, data-acquisition systems, and panel meters.
Q & A
- What is the resolution of the MAX135EWI ADC?
The MAX135EWI has a resolution of 15 bits, with the capability to achieve up to 18-bit resolution through Super LSBs with data averaging. - What is the conversion rate of the MAX135EWI?
The MAX135EWI can perform up to 16 conversions per second, although it can operate at rates up to six times higher. - How much power does the MAX135EWI consume?
The MAX135EWI consumes a maximum of 125µA during normal operation and 10µA in sleep mode. - What is the full scale voltage of the MAX135EWI?
The full scale voltage of the MAX135EWI is 300mV. - What is the LSB value of the MAX135EWI?
The LSB value of the MAX135EWI is 15µV. - What type of output coding does the MAX135EWI use?
The MAX135EWI uses two's complement output coding. - What is the package type of the MAX135EWI?
The MAX135EWI comes in a 28-SOIC package. - What is the operating temperature range of the MAX135EWI?
The operating temperature range of the MAX135EWI is -40℃ to +85℃. - How does the MAX135EWI interface with microprocessors?
The MAX135EWI interfaces with microprocessors through a simple 8-bit parallel data bus and three control lines. - What are some typical applications of the MAX135EWI?
The MAX135EWI is commonly used in data loggers, numerical control systems, weight scales, data-acquisition systems, and panel meters.
