MAX186BEWP

ADCs/DACs - Special Purpose Overview

The MAX186BEWP+ is a low-power, 8-channel, serial 12-bit analog-to-digital converter (ADC) from Analog Devices/Maxim Integrated. It integrates an 8-channel multiplexer, high-bandwidth track/hold circuit, and a 4-wire serial interface compatible with SPI, QSPI, and MICROWIRE protocols. The device operates on a single +5V or dual ±5V supply, featuring an internal 4.096V reference and software-configurable unipolar/bipolar inputs. Key electrical parameters include a 133ksps sampling rate, 1.5mA operating current, and 2µA power-down current. It utilizes successive-approximation architecture within a 20-pin SO package.

ADCs/DACs - Special Purpose Feature Summary

• Integrates 8-channel multiplexer, track/hold, and 12-bit SAR ADC in a single chip
• Internal 4.096V reference voltage with reference-buffer amplifier for gain trim simplification
• Software-selectable unipolar or bipolar input configurations for flexible signal acquisition
• Ultra-low power consumption: 1.5mA in operating mode and 2µA in full power-down mode

ADCs/DACs - Special Purpose Applications

• Portable data logging systems
• High-accuracy process control instrumentation
• Automatic testing equipment
• Battery-powered instruments
• Medical instruments

ADCs/DACs - Special Purpose Procurement Notes

Verify the specific suffix 'BEWP' against official documentation to confirm grade, temperature range, and package type. The datasheet lists standard commercial and industrial grades in PDIP, SO, and SSOP packages; ensure the ordered part matches the required environmental specifications and pinout configuration for the target application.

ADCs/DACs - Special Purpose Selection Notes

Select this component when a multi-channel data acquisition system requires low power consumption and serial interface compatibility. The MAX186 includes an internal reference, whereas the MAX188 requires an external one. Ensure the application supports the 133ksps maximum sampling rate and that the source impedance remains below 5kΩ to maintain specified acquisition times without additional buffering.

ADCs/DACs - Special Purpose Part Context

The MAX186/MAX188 series represents a family of low-power, 8-channel, serial 12-bit ADCs designed for data-acquisition applications. These devices combine an 8-channel multiplexer, high-bandwidth track/hold, and serial interface with high conversion speed and ultra-low power consumption. They operate with a single +5V supply or dual ±5V supplies and feature software-configurable unipolar/bipolar and single-ended/differential operation.

ADCs/DACs - Special Purpose Replacement Considerations

The MAX188 serves as a functional alternative requiring an external reference voltage instead of the internal one found in the MAX186. For parallel interface requirements, the MAX180/MAX181 series is recommended. Anti-aliasing filters should be consulted from the MAX274/MAX275 data sheet if signal conditioning is needed.