MAX186ACAP

ADCs/DACs - Special Purpose Overview

The MAX186ACAP+ 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 with ultra-low power consumption. The device operates on a single +5V or dual ±5V supply. Analog inputs are software-configurable for unipolar/bipolar and single-ended/differential operation. It features an internal 4.096V reference, a 133kHz sampling rate, and a 4-wire serial interface compatible with SPI, QSPI, MICROWIRE, and TMS320 DSPs. The AC grade specifies tight accuracy parameters within the commercial temperature range.

ADCs/DACs - Special Purpose Feature Summary

• 12-bit resolution with 8 single-ended or 4 differential input channels
• Internal 4.096V reference and reference-buffer amplifier
• Software-configurable unipolar (0 to VREF) or bipolar (-VREF/2 to +VREF/2) input ranges
• Low power: 1.5mA operating current, 2µA full power-down current

ADCs/DACs - Special Purpose Applications

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

ADCs/DACs - Special Purpose Procurement Notes

Verify the ordering suffix 'CAP+' indicates the SSOP package and lead-free/RoHS compliance. Confirm the 'A' grade designation matches required accuracy specifications relative to B, C, or D grades. Check availability as A-grade in SSOP may require factory contact. Ensure the application voltage aligns with the specified +5V ±5% or ±5V dual supply requirements.

ADCs/DACs - Special Purpose Selection Notes

Select the MAX186 variant for integrated internal reference; use MAX188 if an external precision reference is preferred. Choose between internal clock mode for processor convenience or external clock mode for precise timing synchronization. Verify that the source impedance is below 5kΩ or add input capacitors to maintain acquisition time integrity. Ensure the serial interface protocol (SPI/QSPI/MICROWIRE) matches the host controller configuration.

ADCs/DACs - Special Purpose Part Context

The MAX186ACAP+ belongs to the MAX186/MAX188 series of low-power, serial 12-bit ADCs. This family combines data-acquisition capabilities with successive-approximation conversion techniques. The part is available in 20-pin PDIP, SO, and SSOP packages. The AC grade denotes specific DC accuracy limits within the 0°C to +70°C operating temperature range.

ADCs/DACs - Special Purpose Replacement Considerations

MAX186CCAP+ offers similar functionality with relaxed accuracy specifications in the same SSOP package.