MAX146ACPP

Analog To Digital Converters (ADC) Overview

The MAX146ACPP+ is a 12-bit successive-approximation analog-to-digital converter (ADC) from the MAX146A series, manufactured by Analog Devices Inc./Maxim Integrated. It integrates an 8-channel multiplexer, high-bandwidth track/hold circuitry, and a serial interface within a single chip. The device operates on a single +2.7V to +3.6V supply and features an internal 2.5V reference. It supports SPI/QSPI/Microwire/TMS320-compatible 4-wire serial communication. Key electrical parameters include a resolution of 12 bits, a sampling rate of 133 kS/s, and a differential nonlinearity (DNL) of ±1 LSB. The INL is specified at ±0.5 LSB, with a signal-to-noise ratio (SNR) of 70 dB. It is housed in a 20-pin Plastic DIP package.

Analog To Digital Converters (ADC) Feature Summary

• Integrates an 8-channel multiplexer with software-configurable unipolar or bipolar input modes for flexible data acquisition.
• Features a low-power architecture with fast power-down capabilities, allowing supply current reduction to under 60µA at reduced sampling rates.
• Includes a built-in 2.5V reference with a buffer amplifier that offers a ±1.5% voltage-adjustment range.
• Supports direct connection to standard microprocessors via a 4-wire serial interface compatible with SPI, QSPI, Microwire, and TMS320 families.

Analog To Digital Converters (ADC) Applications

• Portable Data Logging Systems
• Medical Instruments
• Battery-Powered Instruments
• Process Control

Analog To Digital Converters (ADC) Procurement Notes

Verify component authenticity through authorized distributors or manufacturer channels. Confirm the specific ordering suffix matches the required package type and temperature range. Check for RoHS compliance status as indicated in official documentation. Ensure the part number corresponds to the exact revision required for your design specifications.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a low-power, multi-channel ADC solution is required for battery-operated devices. Consider the MAX146ACPP+ for applications needing 12-bit resolution with an integrated reference. Evaluate the 20-pin DIP package constraints against board space requirements. Compare performance metrics like SNR and DNL against system accuracy needs.

Analog To Digital Converters (ADC) Part Context

The MAX146ACPP+ belongs to the MAX146A family of low-power, serial 12-bit ADCs. This series combines an 8-channel multiplexer with a SAR ADC core. The 'AC' suffix denotes the commercial temperature grade (0°C to +70°C), while 'PP' indicates the 20-pin Plastic DIP package. It is designed for cost-effective data acquisition in portable and industrial applications.

Analog To Digital Converters (ADC) Replacement Considerations

The MAX146BCPP+ is available as a higher-grade alternative within the same package and pinout configuration. For 4-channel versions, the MAX1246 series serves as a functional substitute. Verify pin compatibility and electrical specifications before substituting any component in an existing design.