MAX1309ECM/V+T

Analog To Digital Converters (ADC) Overview

The MAX1309ECM/V+T is a 12-bit, four-channel simultaneous-sampling analog-to-digital converter (ADC) from Analog Devices/Maxim Integrated. It features independent track-and-hold circuitry for each channel and operates with a ±5V input range and ±16.5V fault-tolerant inputs. The device provides an 8-bit bidirectional parallel data bus and supports both internal and external clock modes. It consumes 57mA total supply current when fully operational, utilizing a +4.75V to +5.25V analog supply and a +2.7V to +5.25V digital supply. The component is housed in a 48-pin LQFP package and operates over the extended -40°C to +85°C temperature range.

Analog To Digital Converters (ADC) Feature Summary

• Independent track-and-hold circuitry enables simultaneous sampling across all channels.
• Fault-tolerant analog inputs withstand voltages up to ±16.5V.
• Configurable reference options include an internal +2.5V source or an external voltage between +2.0V and +3.0V.
• Integrated power-saving modes allow for reduced current consumption during idle periods.

Analog To Digital Converters (ADC) Applications

• SIN/COS Position Encoder
• Multiphase Motor Control
• Multiphase Power Monitoring

Analog To Digital Converters (ADC) Procurement Notes

Verify that the ordering suffix matches the required lead-free and RoHS-compliant specifications. Confirm the specific variant corresponds to the four-channel configuration with the ±5V input range. Ensure the package type aligns with the 48-pin LQFP footprint requirements for your design.

Analog To Digital Converters (ADC) Selection Notes

Select this model specifically for applications requiring four independent channels with simultaneous sampling capabilities. Verify that the ±5V input range meets your signal requirements, as other variants in the series offer different ranges. Consider the parallel interface constraints and ensure the host system can accommodate the 12-bit data bus width.

Analog To Digital Converters (ADC) Part Context

This component belongs to the MAX1304–MAX1314 family of high-speed, 12-bit ADCs. The family shares common architecture but varies by channel count and input voltage range. The MAX1309 specifically addresses the need for four-channel simultaneous sampling within the bipolar ±5V input specification.

Analog To Digital Converters (ADC) Replacement Considerations

Direct replacements within the same family include the MAX1305ECM+ (unipolar 4-channel) and MAX1313ECM+ (bipolar 4-channel). Cross-family replacements require careful evaluation of pin compatibility and performance parameters.

Analog To Digital Converters (ADC) FAQ

What is the maximum throughput rate for the MAX1309?

The maximum throughput rate is 901ksps per channel when two channels are selected for conversion using an external clock.

How does the device handle fault conditions on the analog inputs?

The analog inputs are fault-tolerant up to ±16.5V, protecting the device from overvoltage conditions beyond the operating range.

Can the MAX1309 operate without an external reference?

Yes, the device includes an internal +2.5V reference, though it also supports an external reference voltage between +2.0V and +3.0V.