Overview
The MAX132CWG+T is a high-resolution, low-power analog-to-digital converter (ADC) produced by Analog Devices Inc./Maxim Integrated. This CMOS, 18-bit plus sign, serial-output ADC utilizes multi-slope integration to achieve high-resolution conversions in a shorter time compared to standard integrating ADCs. It supports up to 100 conversions per second and features a low conversion noise, ensuring reliable operation with a ±512mV full-scale input range (2µV/LSB). The device is designed with a simple 4-wire serial interface, making it easy to connect to common microprocessors, and it uses two's-complement output coding for simplified bipolar measurements.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 18-bit plus sign |
| Conversion Rate | Up to 100 conversions per second |
| Input Range | ±512mV full-scale (2µV/LSB) |
| Supply Voltage | 4.5V to 5.5V |
| Supply Current | Typical 60µA, sleep mode 1µA |
| Operating Temperature | 0°C to 70°C |
| Package | 24-pin SOIC (0.295", 7.50mm Width) |
| Mounting Type | Surface Mount |
| Max Power Dissipation | 478 mW |
Key Features
- High-resolution conversions using multi-slope integration.
- Low conversion noise and guaranteed operation within ±512mV full-scale input range.
- Simple 4-wire serial interface for easy connection to microprocessors.
- Two's-complement output coding for bipolar measurements.
- Low power consumption: typical 60µA, reduced to 1µA in sleep mode.
- Four serially programmed digital outputs for controlling external multiplexers or programmable-gain amplifiers.
Applications
The MAX132CWG+T is ideal for various applications due to its high resolution, compact size, and low power consumption. Key applications include:
- Data loggers.
- Weigh scales.
- Data-acquisition systems.
- Panel meters.
Q & A
- What is the resolution of the MAX132CWG+T ADC?
The MAX132CWG+T has an 18-bit plus sign resolution. - What is the maximum conversion rate of the MAX132CWG+T?
The MAX132CWG+T can perform up to 100 conversions per second. - What is the input range of the MAX132CWG+T?
The input range is ±512mV full-scale (2µV/LSB). - What is the supply voltage range for the MAX132CWG+T?
The supply voltage range is 4.5V to 5.5V. - How much power does the MAX132CWG+T typically consume?
The typical supply current is 60µA, and it reduces to 1µA in sleep mode. - What is the operating temperature range of the MAX132CWG+T?
The operating temperature range is 0°C to 70°C. - What type of package is the MAX132CWG+T available in?
The MAX132CWG+T is available in a 24-pin SOIC package. - What are some common applications of the MAX132CWG+T?
Common applications include data loggers, weigh scales, data-acquisition systems, and panel meters. - How does the MAX132CWG+T interface with microprocessors?
The MAX132CWG+T uses a simple 4-wire serial interface to connect to common microprocessors. - What is the purpose of the four serially programmed digital outputs on the MAX132CWG+T?
The four serially programmed digital outputs can be used to control an external multiplexer or programmable-gain amplifier.
