MAX1243BCSA+

Analog To Digital Converters (ADC) Overview

The MAX1243BCSA+ is a low-power, 10-bit successive-approximation analog-to-digital converter (ADC) housed in an 8-pin SO package. It operates on a single +2.7V to +5.25V supply and achieves a maximum throughput rate of 73ksps with a power consumption of 3mW at full speed. 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. Data is transmitted via a high-speed, 3-wire serial interface compatible with SPI, QSPI, and MICROWIRE protocols. The component supports a shutdown mode for reduced power usage and is rated for operation within a commercial temperature range of 0°C to +70°C.

Analog To Digital Converters (ADC) Feature Summary

• Requires external reference voltage input at the REF pin
• Features a 3-wire serial interface compatible with standard microcontroller ports
• Includes an internal track/hold circuit for signal acquisition
• Supports a low-power shutdown mode to minimize energy consumption

Analog To Digital Converters (ADC) Applications

• Portable data logging systems
• Process control monitoring
• Test equipment
• Temperature measurement circuits
• Isolated data acquisition

Analog To Digital Converters (ADC) Procurement Notes

Verify that the specific part number corresponds to the commercial temperature grade (0°C to +70°C) and the SOIC-8 package variant. Confirm the requirement for an external reference voltage source, as this model lacks an internal reference unlike its MAX1242 counterpart. Ensure compatibility with the system's serial clock frequency limits and supply voltage ranges before integration.

Analog To Digital Converters (ADC) Selection Notes

Select the MAX1243BCSA+ when an external reference voltage is already available or required for system calibration, distinguishing it from the internally referenced MAX1242. This model is suitable for applications demanding low power consumption and small footprint in an 8-pin package. Verify that the application can accommodate the necessary external bypass capacitor on the reference pin to maintain specified accuracy levels.

Analog To Digital Converters (ADC) Part Context

This component belongs to the MAX1242/MAX1243 family of low-power, 10-bit serial ADCs manufactured by Analog Devices Inc./Maxim Integrated. The family shares identical architecture and performance characteristics, differing primarily in reference configuration. The MAX1243 variant specifically necessitates an external reference, whereas the MAX1242 includes an integrated 2.5V reference.

Analog To Digital Converters (ADC) Replacement Considerations

The MAX1243ACSA+ serves as a direct substitute with tighter integral nonlinearity specifications. Pin-compatible upgrades include the 12-bit MAX1240 and MAX1241 models.