MAX188BCAP

Analog To Digital Converters (ADC) Overview

The MAX188BCAP is a 12-bit, 8-channel analog-to-digital converter (ADC) from the MAX186/MAX188 family. It integrates an 8-channel multiplexer, high-bandwidth track/hold circuit, and serial interface. The device operates on a single +5V or dual ±5V supply and supports software-configurable unipolar/bipolar and single-ended/differential inputs. It utilizes successive-approximation conversion with a sampling rate of 133ksps. Unlike the MAX186, the MAX188 requires an external reference voltage applied to the VREF pin. It features a 4-wire serial interface compatible with SPI, QSPI, and Microwire protocols.

Analog To Digital Converters (ADC) Feature Summary

• Integrates an 8-channel multiplexer with high-bandwidth track/hold for efficient data acquisition
• Supports flexible input configurations including single-ended and differential modes via software control
• Features ultra-low power consumption with multiple selectable power-down modes
• Includes a reference-buffer amplifier to simplify gain trimming and system calibration

Analog To Digital Converters (ADC) Applications

• Portable Data Logging
• Data-Acquisition Systems
• High-Accuracy Process Control
• Automatic Testing Equipment
• Medical Instruments

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific grade suffix 'B' in the part number against the manufacturer's ordering information to confirm accuracy specifications and temperature range. Ensure the package type matches the SSOP variant indicated by the 'CAP' suffix. Confirm RoHS compliance status if required for the application, noting that lead-free versions typically carry a '+' designation in the part number.

Analog To Digital Converters (ADC) Selection Notes

Select the MAX188BCAP when an external precision voltage reference is preferred over an internal one. This model is suitable for applications requiring 12-bit resolution with 8 analog inputs. Consider the SSOP package for space-constrained designs. Verify that the system can provide the necessary external reference voltage and that the serial interface timing meets the microprocessor requirements for either internal or external clock modes.

Analog To Digital Converters (ADC) Part Context

The MAX188BCAP belongs to the MAX186/MAX188 series of low-power, serial 12-bit ADCs manufactured by Maxim Integrated (now Analog Devices). This family combines high conversion speed with minimal power usage. The MAX188 variant specifically distinguishes itself by requiring an external reference, offering designers flexibility in setting the full-scale input range compared to the internally referenced MAX186.

Analog To Digital Converters (ADC) Replacement Considerations

The MAX186BCAP is a direct functional substitute within the same package and grade, differing only by the inclusion of an internal 4.096V reference instead of requiring an external one. Other members of the MAX186/MAX188 family may be considered if different accuracy grades or package types are acceptable.