MAX149BCAP+

Analog To Digital Converters (ADC) Overview

The MAX149BCAP+ is a low-power, serial 10-bit analog-to-digital converter featuring an 8-channel multiplexer and track/hold circuit. It operates from a single +2.7V to +5.25V supply with sampling rates up to 133ksps. The device includes an internal 2.5V reference and supports software-configurable unipolar/bipolar and single-ended/differential inputs. It utilizes a 4-wire serial interface compatible with SPI/QSPI/MICROWIRE standards.

Analog To Digital Converters (ADC) Feature Summary

• Integrates an 8-channel multiplexer with high-bandwidth track/hold for efficient data acquisition
• Features an internal 2.5V reference with a buffer amplifier offering voltage adjustment capabilities
• Supports flexible power management through hardware shutdown and software-selectable power-down modes
• Provides a 4-wire serial interface directly compatible with standard microprocessor communication protocols

Analog To Digital Converters (ADC) Applications

• Portable Data Logging Systems
• Industrial Data Acquisition Networks
• Medical Instrumentation
• Battery-Powered Measurement Devices
• Process Control Monitoring

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'CAP+' indicates a lead-free/RoHS-compliant SSOP-20 package configuration. Confirm that the 'B' grade designation meets the required integral nonlinearity specifications of ±1 LSB for your application accuracy needs before finalizing procurement orders.

Analog To Digital Converters (ADC) Selection Notes

Select this component when an integrated solution for multi-channel signal conditioning is required without external reference components. Ensure the system architecture can accommodate the 4-wire serial timing constraints. Verify that the input source impedance remains below 4kΩ to maintain optimal AC performance and acquisition speed.

Analog To Digital Converters (ADC) Part Context

This part belongs to the MAX148/MAX149 family of serial ADCs. Unlike the MAX148, which requires an external reference, the MAX149 integrates a 2.5V reference. The 'B' variant offers tighter linearity specifications compared to the 'A' grade, making it suitable for applications requiring higher precision within the same low-power form factor.

Analog To Digital Converters (ADC) Replacement Considerations

The MAX148BCAP+ serves as a functional substitute if an external reference voltage source is available in the design. Both parts share identical pinouts and serial interfaces, allowing for direct replacement provided the external reference requirements are met.