MAX11632EEG+

Analog To Digital Converters (ADC) Overview

The MAX11632EEG+ is a serial 12-bit analog-to-digital converter (ADC) featuring an internal reference and a 16-channel analog multiplexer with track/hold. It operates on a single +4.75V to +5.25V supply and supports sampling rates up to 300ksps using an external clock. The device includes a 16-entry FIFO, scan mode, internal averaging, and AutoShutdown™ functionality. It utilizes a 10MHz SPI-/QSPI-/MICROWIRE-compatible interface and provides ±1 LSB INL and DNL accuracy without missing codes over the -40°C to +85°C temperature range.

Analog To Digital Converters (ADC) Feature Summary

• Integrated 16-channel analog multiplexer with track/hold circuitry for single-ended inputs
• On-chip 16-entry first-in/first-out (FIFO) buffer for efficient data handling
• Internal 4.096V voltage reference with support for external references from 1V to VDD
• AutoShutdown™ power management reduces current consumption during idle periods

Analog To Digital Converters (ADC) Applications

• System Supervision
• Data-Acquisition Systems
• Industrial Control Systems
• Patient Monitoring
• Data Logging

Analog To Digital Converters (ADC) Procurement Notes

Verify the component against official Analog Devices or Maxim Integrated datasheets to confirm pinout compatibility and electrical specifications. Ensure the operating environment remains within the specified -40°C to +85°C temperature range. Confirm that the system power supply strictly adheres to the 4.75V to 5.25V requirement to maintain performance integrity.

Analog To Digital Converters (ADC) Selection Notes

Select this model when a high channel count of 16 is required alongside moderate resolution and speed. It is suitable for applications needing onboard signal conditioning features like averaging and scanning. Verify that the system can accommodate the 24-pin QSOP package dimensions and thermal dissipation requirements for continuous operation.

Analog To Digital Converters (ADC) Part Context

This component belongs to the MAX11626–MAX11633 family of 12-bit ADCs. It shares architectural similarities with the MAX11633 but differs in supply voltage requirements and internal reference voltage. Other family members offer fewer channels or operate at lower supply voltages, providing design flexibility for various power and channel density constraints.

Analog To Digital Converters (ADC) Replacement Considerations

The MAX11633EEG+ serves as a direct functional substitute within the same package, differing primarily in its 2.7V to 3.6V supply range and 2.5V internal reference. Designers must verify voltage level compatibility and reference adjustments when swapping between these variants.

Analog To Digital Converters (ADC) FAQ

How does the MAX11632 handle input signals exceeding the supply rails?

Internal ESD protection diodes clamp all pins to VDD and GND, allowing inputs to swing from (GND - 0.3V) to (VDD + 0.3V) without damage. However, accurate conversions require inputs not to exceed VDD by more than 50mV.

What is the maximum serial clock frequency supported by the device?

The device supports a serial clock frequency of up to 10MHz for data I/O operations. For externally timed conversions, the SCLK frequency is limited to 4.8MHz to achieve the maximum 300ksps sampling rate.

Can the internal reference be disabled to use an external one?

Yes, the internal reference can be disabled via the setup register. An external reference voltage ranging from 1V to VDD can be applied to the REF pin instead.