MAX1414CAI+

ADCs/DACs - Special Purpose Overview

The MAX1414CAI+ is a low-power, general-purpose, multichannel data-acquisition system (DAS) from Analog Devices Inc./Maxim Integrated. It features a 16-bit sigma-delta ADC with a differential 8:1 input multiplexer, two 10-bit force/sense DACs, and an internal 1.25V bandgap reference. Operating on a single +2.7V to +3.6V supply, it consumes 1.15mA in Run mode and 2.5µA in Sleep mode. The device includes a real-time clock (RTC), signal-detect comparator with a 50mV trip threshold, and SPI/QSPI/MICROWIRE-compatible serial interface. It is housed in a 28-pin SSOP package.

ADCs/DACs - Special Purpose Feature Summary

• 16-bit Sigma-Delta ADC with programmable gains (+1/3, +1, +2 V/V) and continuous conversion rates of 30Hz or 60Hz
• Two 10-bit Force/Sense DACs with ±1.0 LSB INL/DNL and output range from 0.05V to AVDD - 0.2V
• Signal-detect comparator with a specific 50mV trip threshold for the MAX1414 variant
• Integrated Real-Time Clock (RTC) valid until 9999, alarm function, and high-frequency PLL clock output (2.4576MHz)

ADCs/DACs - Special Purpose Applications

• Medical Instruments
• Industrial Control Systems
• Portable Equipment
• Data-Acquisition Systems
• Automatic Testing

ADCs/DACs - Special Purpose Procurement Notes

Verify the ordering suffix 'I' indicates the commercial temperature range of 0°C to +70°C and the 'SSOP' package type. Confirm the '+T' suffix if tape-and-reel packaging is required, as standard listings may vary by distributor. Ensure the specific part number matches the MAX1414 feature set, distinguishing it from the MAX1407 which has a 0mV comparator threshold.

ADCs/DACs - Special Purpose Selection Notes

Select the MAX1414 over the MAX1407 when a signal-detect comparator with a 50mV trip threshold is required. Choose this device for applications needing two 10-bit DACs and four auxiliary analog inputs alongside the main ADC channels. Consider the MAX1408 if eight auxiliary analog inputs are needed instead of DACs. Ensure the system operates within the +2.7V to +3.6V supply range for optimal performance.

ADCs/DACs - Special Purpose Part Context

The MAX1414 is part of the MAX1407/MAX1408/MAX1409/MAX1414 family of low-power DAS devices. It shares the same core architecture, including the 16-bit ADC and RTC, but is distinguished by its specific combination of four auxiliary analog inputs, two 10-bit DACs, and a 50mV signal-detect comparator threshold. It is designed to replace discrete solutions in battery-powered systems.

ADCs/DACs - Special Purpose Replacement Considerations

The MAX1407 is a pin-compatible alternative within the same family but features a 0mV signal-detect comparator threshold instead of the 50mV threshold found in the MAX1414. Verify that the lower threshold requirement of the MAX1407 does not impact the application's noise immunity or signal detection logic.