MAX1241AESA+T

Analog To Digital Converters (ADC) Overview

The MAX1241AESA+T is a low-power, 12-bit successive-approximation analog-to-digital converter (ADC) in an 8-pin SO package. It operates on a single +2.7V to +5.25V supply and achieves a throughput rate of 73ksps with a conversion time of 7.5µs. The device features a fast track/hold circuit with a 1.5µs acquisition time and requires an external reference voltage at the REF pin. Power consumption is 3mW at maximum sampling speed, reducible to 5µW via shutdown mode. It utilizes a high-speed 3-wire serial interface compatible with SPI, QSPI, and MICROWIRE protocols.

Analog To Digital Converters (ADC) Feature Summary

• Requires external reference voltage input for analog-to-digital conversion
• Operates on a single power supply ranging from +2.7V to +5.25V
• Integrates a successive-approximation register architecture with internal clock
• Features a three-level shutdown input to minimize supply current

Analog To Digital Converters (ADC) Applications

• Battery-powered systems
• Portable data logging
• Isolated data acquisition
• Process control instrumentation

Analog To Digital Converters (ADC) Procurement Notes

Verify that the specific ordering suffix matches the required temperature range and packaging format. Confirm the presence of the lead-free designation (+) and tape-and-reel configuration (T). Ensure the component meets RoHS compliance standards before integration into the final assembly process.

Analog To Digital Converters (ADC) Selection Notes

Select this model when an external voltage reference is preferred or already available in the system design. It is suitable for applications requiring operation up to +5.25V, unlike the MAX1240 which is limited to +3.6V. Consider the 12-bit resolution and 73ksps sampling rate against the specific bandwidth requirements of the signal source.

Analog To Digital Converters (ADC) Part Context

This component belongs to the MAX1240/MAX1241 family of low-power serial ADCs manufactured by Analog Devices / Maxim Integrated. The MAX1241 variant specifically distinguishes itself by utilizing an external reference, whereas the MAX1240 includes an internal 2.5V reference. Both share identical SAR architectures and serial interface capabilities within the same 8-pin footprint.

Analog To Digital Converters (ADC) Replacement Considerations

MAX1240AEPA+T

Analog To Digital Converters (ADC) FAQ

Does the MAX1241AESA+T include an internal voltage reference?

No, the MAX1241 requires an external reference voltage applied to the REF pin. The MAX1240 is the variant in this family that includes an internal 2.5V reference.

What is the minimum acquisition time for the track/hold circuit?

The track/hold acquisition time is 1.5µs. This duration may increase if the source impedance exceeds 1kΩ.

How does the SHDN pin affect power consumption?

Pulling the SHDN pin low activates shutdown mode, reducing the supply current significantly. This allows for lower average power consumption during periods of slow throughput rates.