MAX132CNG+

Analog To Digital Converters (ADC) Overview

The MAX132CNG+ is a CMOS, 18-bit plus sign, serial-output analog-to-digital converter utilizing multi-slope integration. It operates with ±5V supplies and achieves up to 100 conversions per second. The device features a low typical supply current of 60µA, reducing to 1µA in sleep mode. It provides ±512mV full-scale input range with 2µV/LSB resolution at 18 bits. Key electrical parameters include 15µVRMS noise, ±0.006% FSR accuracy at 16 conv/sec, and 50Hz/60Hz line rejection capabilities when using a 32,768Hz clock.

Analog To Digital Converters (ADC) Feature Summary

• Multi-slope integration architecture enables high-resolution conversions with low noise.
• Simple four-wire serial interface connects directly to common microprocessors.
• Four user-programmable digital outputs control external multiplexers or programmable-gain amplifiers.
• Low power consumption supports battery-powered applications with dedicated sleep mode.

Analog To Digital Converters (ADC) Applications

• Remote data acquisition systems
• Battery-powered instruments
• Industrial process control
• Transducer signal measurement for pressure, flow, temperature, voltage, current, resistance, and weight

Analog To Digital Converters (ADC) Procurement Notes

Verify the component authenticity through authorized distributors or direct manufacturer channels. Confirm the package type matches the 24-pin narrow DIP specification. Ensure the temperature grade corresponds to the commercial range (0°C to +70°C) required for your specific application environment before finalizing procurement.

Analog To Digital Converters (ADC) Selection Notes

Select this component for applications requiring high resolution and low power consumption. Ensure the design accommodates the ±5V dual supply requirement. Verify that the serial interface timing meets the microprocessor's speed constraints. Consider the external integrator components and reference voltage requirements for optimal performance.

Analog To Digital Converters (ADC) Part Context

The MAX132CNG+ belongs to the MAX132 family of precision analog-to-digital converters. It is manufactured by Analog Devices Inc./Maxim Integrated. The 'C' suffix indicates the commercial temperature range, while 'NG' specifies the 24-pin narrow plastic DIP package. This part is designed for high-accuracy data acquisition tasks.

Analog To Digital Converters (ADC) Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult the manufacturer for alternative options if this specific package or temperature grade is unavailable.

Analog To Digital Converters (ADC) FAQ

How does the MAX132 achieve 50Hz/60Hz line rejection?

The MAX132 sets the integration time equal to one complete 50Hz or 60Hz line cycle. Using a 32,768Hz crystal, it integrates for 655 clock periods in 50Hz mode and 545 clock periods in 60Hz mode.

What is the recommended full-scale input voltage range?

The recommended analog full-scale input range is ±512mV. Performance is tested and guaranteed at this range, corresponding to a 2µV/LSB resolution at 18 bits.

How many user-programmable output bits are available?

The MAX132 features four serially programmed digital outputs (P0–P3) that can be used to control an external multiplexer or programmable-gain amplifier.