ADC0803LCN/NOPB

Analog To Digital Converters (ADC) Overview

The ADC0803LCN/NOPB is an 8-bit successive approximation analog-to-digital converter manufactured by Texas Instruments. It operates on a single 5-V supply and features differential analog voltage inputs for improved common-mode rejection. The device includes an on-chip clock generator, tri-state output latches, and logic compatible with both MOS and TTL standards. It requires no external interfacing logic to connect directly to microprocessor data buses. Key specifications include a conversion time of approximately 100 µs at a 640 kHz clock frequency and a total adjusted error of ±1/2 LSB.

Analog To Digital Converters (ADC) Feature Summary

• 8-bit resolution with successive approximation architecture
• Differential analog voltage inputs (VIN+ and VIN-)
• On-chip clock generator with external RC timing
• Tri-state outputs compatible with 8080-microprocessor derivatives

Analog To Digital Converters (ADC) Applications

• Interface to temperature sensors and transducers
• Voltage source monitoring in standalone systems
• General-purpose data acquisition with 8-bit microprocessors

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'LCN' corresponds to the PDIP-20 package and the -40°C to +85°C operating temperature range. Confirm that the 'NOPB' designation indicates lead-free and RoHS compliance as per the manufacturer's current product change notifications. Ensure the datasheet revision matches the required design specifications.

Analog To Digital Converters (ADC) Selection Notes

Select this component when differential input capability is required to reject noise or offset voltages. The ADC0803 offers ±1/2 LSB accuracy after full-scale adjustment. Compare against the ADC0804 if unadjusted performance is acceptable, noting the ADC0803 typically provides better linearity without external calibration adjustments.

Analog To Digital Converters (ADC) Part Context

This part belongs to the ADC080x family, which includes the ADC0801 through ADC0805. These devices share similar architectures but differ in pinouts, accuracy grades, and internal reference configurations. The ADC0803 specifically utilizes a differential input structure distinct from the single-ended inputs found in other variants like the ADC0804.

Analog To Digital Converters (ADC) Replacement Considerations

The ADC0804LCN/NOPB is a functional substitute within the same family, though it uses single-ended inputs instead of differential. Other members of the ADC080x series may require verification of pin compatibility and accuracy specifications before substitution.