ADC0844CCJ

Analog To Digital Converters (ADC) Overview

The ADC0844CCJ is an 8-bit successive approximation analog-to-digital converter manufactured by Texas Instruments. It integrates a 4-channel analog input multiplexer with software-configurable addressing logic for single-ended, differential, or pseudo-differential operation. The device operates on a single 5V supply (4.5V to 6.0V) and features TRI-STATE output latches for direct microprocessor interfacing without additional interface logic. Key electrical specifications include a maximum conversion time of 40 μs, a total unadjusted error of ±1 LSB, and low power consumption of 15 mW. It utilizes an internal clock and supports ratiometric or absolute reference configurations.

Analog To Digital Converters (ADC) Feature Summary

• Integrated 4-channel multiplexer supporting single-ended, differential, and pseudo-differential modes
• TRI-STATE outputs enable direct connection to microprocessor data buses
• Internal clock eliminates external timing components
• Operates from a single 5VDC supply with 0V to 5V input range

Analog To Digital Converters (ADC) Applications

• Microprocessor-based data acquisition systems
• Industrial process control monitoring
• Battery-powered instrumentation requiring low power consumption
• Transducer signal conditioning interfaces

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'CCJ' against current manufacturer documentation, as package and temperature variants may have changed status. Confirm availability through authorized distributors, noting that some related packages in this family are marked obsolete or not recommended for new designs. Ensure compliance with RoHS requirements if applicable to the specific production lot.

Analog To Digital Converters (ADC) Selection Notes

Select the ADC0844CCJ when four analog channels are required within a single package. Choose this component over the ADC0848 if channel count is limited to four but pin count must be minimized via the 20-pin PDIP package. Consider the pseudo-differential mode for applications requiring arbitrary ground references. Verify that the source impedance remains below 1 kΩ to prevent errors from multiplexer leakage currents.

Analog To Digital Converters (ADC) Part Context

The ADC0844 belongs to the μP-compatible A/D converter family alongside the ADC0848. While the ADC0848 provides eight channels in a 24-pin or 28-pin PLCC package, the ADC0844 offers a compact solution with four channels in a 20-pin PDIP configuration. Both devices share identical core conversion architecture, timing characteristics, and interface protocols, differing primarily in multiplexer capacity and physical footprint.

Analog To Digital Converters (ADC) Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided datasheet. Designers should verify if newer generations of 8-bit SAR ADCs meet the specific timing and interface requirements before substituting.