Overview
The MAX132CNG+ 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, enabling high-resolution conversions at a rate of up to 100 conversions per second. It features a simple 4-wire serial interface compatible with most microprocessors and offers twos-complement output coding for simplified bipolar measurements. The device is known for its low conversion noise and operates with a ±512mV full-scale input range, ensuring precise and reliable conversions.
Key Specifications
| Parameter | Value | Description |
|---|---|---|
| Resolution | 18-bit | High-resolution analog-to-digital conversion |
| Conversion Rate | Up to 100 conversions per second | Fast conversion rate using multi-slope integration |
| Input Range | ±512mV | Full-scale input range with 2µV/LSB resolution |
| Supply Voltage | ±5V (Analog and Digital) | Dual supply voltage for analog and digital operations |
| Supply Current | Typical 60µA, sleep mode 1µA | Low power consumption with reduced current in sleep mode |
| Interface | 4-wire serial interface | Compatible with most microprocessors |
| Output Coding | Twos-complement | Simplified bipolar measurements |
| Package | 24-pin narrow DIP and wide SO | Available in various package types |
| Operating Temperature | 0°C to 70°C (commercial grade) | Extended temperature grades available |
Key Features
- High Resolution: 18-bit plus sign resolution for precise analog-to-digital conversions.
- Low Power Consumption: Typical supply current of 60µA and reduced to 1µA in sleep mode.
- Fast Conversion Rate: Up to 100 conversions per second using multi-slope integration.
- Simple Interface: 4-wire serial interface compatible with most microprocessors.
- Twos-Complement Output Coding: Simplifies bipolar measurements.
- Programmable Digital Outputs: Four serially programmed digital outputs for controlling external multiplexers or programmable-gain amplifiers.
Applications
The MAX132CNG+ 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 MAX132CNG+ ADC?
The MAX132CNG+ has an 18-bit plus sign resolution.
- What is the maximum conversion rate of the MAX132CNG+?
The MAX132CNG+ can perform up to 100 conversions per second.
- What is the input range of the MAX132CNG+?
The full-scale input range is ±512mV with a resolution of 2µV/LSB.
- What is the typical supply current of the MAX132CNG+?
The typical supply current is 60µA, and it reduces to 1µA in sleep mode.
- What type of interface does the MAX132CNG+ use?
The MAX132CNG+ uses a 4-wire serial interface.
- What is the output coding of the MAX132CNG+?
The output coding is twos-complement, which simplifies bipolar measurements.
- In what package types is the MAX132CNG+ available?
The MAX132CNG+ is available in 24-pin narrow DIP and wide SO packages.
- What are the typical operating temperatures for the MAX132CNG+?
The commercial grade operates from 0°C to 70°C, with extended temperature grades available.
- What are some common applications of the MAX132CNG+?
Common applications include data loggers, weigh scales, data-acquisition systems, and panel meters.
- Does the MAX132CNG+ have programmable digital outputs?
Yes, it has four serially programmed digital outputs for controlling external devices.
