MAX1021BETX+

ADCs/DACs - Special Purpose Overview

The MAX1021BETX+ is a mixed-signal integrated circuit combining an 8-channel, 10-bit analog-to-digital converter (ADC) and an octal, 10-bit digital-to-analog converter (DAC). It features a true-differential track/hold, an internal ±1°C accurate temperature sensor, and four configurable general-purpose I/O ports. The device operates on a single +2.7V to +5.25V supply, consuming 2.5mA at 225ksps throughput. Key specifications include ±0.5 LSB INL/DNL for both ADC and DAC, a 2µs DAC settling time, and a 25MHz SPI/QSPI/MICROWIRE-compatible serial interface.

ADCs/DACs - Special Purpose Feature Summary

• Integrated 10-bit ADC with 225ksps conversion rate and 8 single-ended or 4 differential channels
• Octal 10-bit DAC with ultra-low glitch energy (4nV·s) and 2µs settling time
• On-chip FIFO storing 16 ADC results and one temperature result
• Internal 2.5V reference and ±1°C accurate temperature sensor

ADCs/DACs - Special Purpose Applications

• Closed-loop controls for optical components
• Base station system supervision and control
• Data-acquisition systems

ADCs/DACs - Special Purpose Procurement Notes

Verify the component is the lead-free version indicated by the '+' suffix in the part number. Confirm the package type matches the 36-pin thin QFN-EP specification. Ensure the operating environment falls within the -40°C to +85°C industrial temperature range defined in the datasheet.

ADCs/DACs - Special Purpose Selection Notes

Select the MAX1021BETX+ when eight DAC outputs are required alongside the ADC functionality. For applications needing only four DAC channels, consider the MAX1043 variant. Verify that the system voltage requirements align with the +2.7V to +5.25V analog supply range.

ADCs/DACs - Special Purpose Part Context

This component belongs to the MAX1021/MAX1043 family of multichannel data acquisition systems. It integrates signal conditioning, conversion, and control capabilities into a single 36-pin thin QFN package, designed to minimize power consumption and processor overhead in embedded systems.

ADCs/DACs - Special Purpose Replacement Considerations

The MAX1043BETX+ is a pin-compatible alternative within the same family, offering four DAC channels instead of eight.