ADC0802LCN/NOPB

Analog To Digital Converters (ADC) Overview

The ADC0802LCN/NOPB is an 8-bit successive approximation analog-to-digital converter manufactured by Texas Instruments. It features a differential potentiometric ladder architecture and operates on a single 5-V supply with a voltage range of 4.5 V to 6.3 V. The device provides tri-state output latches for direct microprocessor interfacing without additional logic. Key electrical specifications include a conversion time of 100 µs, a clock frequency range of 100 kHz to 1460 kHz, and a total unadjusted error of ±1/2 LSB when the VREF/2 pin is set to 2.500 VDC. It utilizes a parallel data interface and includes an on-chip clock generator.

Analog To Digital Converters (ADC) Feature Summary

• Compatible with 8080-microprocessor derivatives requiring no interfacing logic
• Differential analog voltage inputs for improved common-mode rejection
• On-chip clock generator with external RC timing elements
• Logic inputs and outputs meet both MOS and TTL voltage-level specifications

Analog To Digital Converters (ADC) Applications

• Interface to temperature sensors, voltage sources, and transducers
• General-purpose A/D conversion in 8-bit microprocessor systems
• Stand-alone device operation

Analog To Digital Converters (ADC) Procurement Notes

Verify that the component matches the specific package type (PDIP-20) and operating temperature range (-40°C to 85°C). Confirm the presence of the NOPB suffix indicates lead-free compliance and RoHS standards. Ensure the ordering information aligns with the manufacturer's current documentation as product folders may be updated.

Analog To Digital Converters (ADC) Selection Notes

Select this model when differential analog inputs are required to offset zero input values or improve noise immunity compared to single-ended variants like the ADC0804. The ±1/2 LSB unadjusted error specification makes it suitable for applications needing better accuracy than the standard ±1 LSB devices while maintaining simple microprocessor compatibility.

Analog To Digital Converters (ADC) Part Context

This component belongs to the ADC080x family of 8-bit, µP-compatible analog-to-digital converters. The series includes variants such as the ADC0801, ADC0803, ADC0804, and ADC0805, which differ primarily in their accuracy specifications and reference voltage configurations. The ADC0802 specifically offers a ±1/2 LSB total unadjusted error rating.

Analog To Digital Converters (ADC) Replacement Considerations

Direct functional replacements within the same family include the ADC0801 (±1/4 LSB accuracy), ADC0803 (±1/2 LSB adjusted error), and ADC0804 (±1 LSB unadjusted error). Verify that the replacement part number supports the required PDIP-20 package and meets the specific accuracy and reference voltage requirements of the design.