MAX1241ACSA+T

Analog To Digital Converters (ADC) Overview

The MAX1241ACSA+T is a low-power, 12-bit analog-to-digital converter (ADC) manufactured by Analog Devices Inc./Maxim Integrated. It operates on a single +2.7V to +5.25V supply and achieves a maximum throughput rate of 73ksps with a conversion time of 7.5µs. The device features an internal track/hold circuit with a 1.5µs acquisition time and requires an external reference voltage applied to the REF pin. Power consumption is 3mW at full speed and reduces to 5µW in shutdown mode. It utilizes a high-speed, 3-wire serial interface compatible with SPI, QSPI, and MICROWIRE protocols, housed in an 8-pin SO package.

Analog To Digital Converters (ADC) Feature Summary

• Requires external reference voltage input for flexible system configuration
• Features a fast internal track/hold circuit for signal sampling
• Supports standard microcontroller interfaces including SPI, QSPI, and MICROWIRE
• Includes a dedicated three-level shutdown input for power management

Analog To Digital Converters (ADC) Applications

• Battery-powered systems requiring extended operational life
• Portable data logging equipment
• Isolated data acquisition modules
• Process control instrumentation

Analog To Digital Converters (ADC) Procurement Notes

Verify that the specific component variant requires an external reference voltage source connected to the REF pin, as it lacks an internal reference unlike the MAX1240 counterpart. Confirm the operating temperature range matches the 'C' designation for commercial applications. Ensure the ordering suffix corresponds to the lead-free/RoHS-compliant packaging indicated by the '+' symbol. Cross-reference the datasheet revision to confirm pinout and electrical characteristics remain consistent with current design requirements.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a 12-bit resolution is sufficient for the application's accuracy needs while prioritizing low power consumption. Choose this model over the MAX1240 if the system design necessitates an external reference voltage to match specific sensor outputs or improve noise performance. Consider the 73ksps throughput limit when evaluating signal bandwidth requirements. Verify that the 8-pin SO package footprint fits within the available PCB space constraints.

Analog To Digital Converters (ADC) Part Context

This part belongs to the MAX1240/MAX1241 family of low-power, 12-bit serial ADCs. It shares identical architecture and performance specifications with the MAX1240, differing primarily in the reference voltage configuration. While the MAX1240 integrates a 2.5V internal reference, the MAX1241 relies on an external reference, offering greater flexibility for varying input ranges. Both devices utilize the same successive-approximation register (SAR) technology and serial interface protocol.

Analog To Digital Converters (ADC) Replacement Considerations

The MAX1240ACSA+T serves as a functional substitute if the application can accommodate its integrated 2.5V internal reference. Other Maxim Integrated SAR ADCs may require significant schematic modifications due to differences in interface protocols or pin configurations.