MAX188BEAP+

ADCs/DACs - Special Purpose Overview

The MAX188BEAP+ is a 12-bit, 8-channel analog-to-digital converter (ADC) from Analog Devices Inc./Maxim Integrated. It integrates an 8-channel multiplexer, high-bandwidth track/hold circuitry, and a serial interface. The device operates on a single +5V or dual ±5V supply and supports software-configurable unipolar/bipolar and single-ended/differential inputs. 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, allowing direct connection to microprocessors without external logic.

ADCs/DACs - Special Purpose Feature Summary

• 12-bit resolution with 8 single-ended or 4 differential input channels
• 133kHz sampling rate with internal track/hold circuitry
• Requires external reference voltage at VREF pin
• Low power consumption: 1.5mA operating, 2µA full power-down

ADCs/DACs - Special Purpose Applications

• Portable data logging systems
• Data-acquisition applications
• High-accuracy process control
• Automatic testing equipment
• Battery-powered instruments

ADCs/DACs - Special Purpose Procurement Notes

Verify the specific grade suffix 'E' for the -40°C to +85°C temperature range and 'A' for accuracy class when ordering. Confirm the SSOP package availability as A-grade in this package may require factory contact. Ensure the external reference voltage is stable at 4.096V for specified accuracy.

ADCs/DACs - Special Purpose Selection Notes

Select the MAX188BEAP+ over the MAX186 when an external reference is preferred or required for system calibration. The 'E' suffix indicates extended temperature operation (-40°C to +85°C). The 'A' suffix denotes higher accuracy grades compared to B, C, or D. Ensure the application can accommodate the SSOP package footprint, which occupies 30% less area than PDIP.

ADCs/DACs - Special Purpose Part Context

The MAX188BEAP+ belongs to the MAX186/MAX188 family of low-power, serial 12-bit ADCs. It shares the same core architecture and pinout as the MAX186 but differs in reference configuration. The BEAP+ designation specifies the Extended temperature grade, B accuracy, SSOP package, and lead-free/RoHS compliance.

ADCs/DACs - Special Purpose Replacement Considerations

The MAX186BEAP+ is a functional substitute if the internal 4.096V reference is acceptable. Other MAX188 variants include CPP+, CWP+, CAP+ for commercial temperature ranges.