MAX1407CAI+

ADCs/DACs - Special Purpose Overview

The MAX1407CAI+ is a low-power, general-purpose multichannel data-acquisition system (DAS) operating from a single +2.7V to +3.6V supply. It integrates a differential 8:1 input multiplexer, a 16-bit Sigma-Delta ADC with programmable gains of +1/3, +1, or +2 V/V, and two 10-bit force/sense DACs. The device features an internal 1.25V bandgap reference, a real-time clock (RTC), and a high-frequency PLL clock output. Supply current is 1.15mA in Run mode and 2.5µA in Sleep mode. It is housed in a 28-pin SSOP package and operates within a temperature range of 0°C to +70°C.

ADCs/DACs - Special Purpose Feature Summary

• 16-Bit Sigma-Delta ADC with 30Hz or 60Hz continuous conversion rates and on-chip offset calibration
• Two 10-bit Force/Sense DACs with monotonic performance and precise sensor interface capabilities
• Integrated Real-Time Clock (RTC) valid until 9999, alarm function, and 2.4576MHz PLL clock output
• Low power consumption with 1.15mA Run mode current and 2.5µA Sleep mode current

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 component status as the source documentation indicates the MAX1407 family may be discontinued or have limited availability. Confirm the specific ordering suffix matches the required package and temperature grade. Ensure compatibility with existing serial interface protocols such as SPI/QSPI or MICROWIRE before procurement.

ADCs/DACs - Special Purpose Selection Notes

Select the MAX1407CAI+ for applications requiring integrated analog front-end conditioning and digital-to-analog conversion alongside data acquisition. Choose this part over the MAX1408 if only four auxiliary analog inputs are needed, or over the MAX1409 if an 8-channel multiplexer and shutdown control are required. Verify that the +2.7V to +3.6V supply range meets the system power constraints.

ADCs/DACs - Special Purpose Part Context

The MAX1407 is part of the MAX1407/MAX1408/MAX1409/MAX1414 DAS family. These devices are designed to replace multiple discrete components, including amplifiers, multiplexers, ADCs, and voltage references, thereby reducing board space and system complexity. The CAI suffix denotes the commercial temperature range and SSOP package.

ADCs/DACs - Special Purpose Replacement Considerations

Direct replacements within the same family include the MAX1408CAI+, MAX1409CAP+, and MAX1414CAI+. Selection depends on the number of auxiliary analog inputs required (four for MAX1407/MAX1414, eight for MAX1408, one for MAX1409) and specific comparator threshold requirements.