ADC0804LCWMX

Analog To Digital Converters (ADC) Overview

The ADC0804LCWMX is a Texas Instruments CMOS 8-bit successive approximation analog-to-digital converter (ADC) housed in a 20-pin SOIC package. It operates on a single 5-V supply with an input voltage range of 0 V to 5 V and features differential analog inputs for improved common-mode rejection. The device includes an on-chip clock generator, tri-state output latches, and requires no external interfacing logic. Key electrical specifications include a conversion time of 100 µs at a 640 kHz clock frequency, a total unadjusted error of ±1 LSB, and a typical power consumption of 9.5 mW.

Analog To Digital Converters (ADC) Feature Summary

• CMOS 8-bit SAR architecture with differential potentiometric ladder
• On-chip clock generator compatible with external RC timing elements
• Tri-state data outputs for direct microprocessor bus interfacing
• Differential analog inputs allowing offset adjustment and common-mode rejection

Analog To Digital Converters (ADC) Applications

• Interface to temperature sensors, voltage sources, and transducers
• General-purpose data acquisition systems using 8-bit microprocessors
• Stand-alone analog-to-digital conversion applications

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'LCWMX' against the manufacturer's current orderable addendum to confirm package type and availability status. Ensure that the required operating temperature range aligns with the LC sub-series specification (0°C to +70°C). Confirm RoHS compliance requirements as indicated by the NOPB designation if applicable to the specific revision.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a low-cost, 8-bit resolution ADC with parallel interface is required. The differential input configuration is suitable for applications needing offset adjustment or improved noise immunity compared to single-ended designs. Verify that the 100 µs conversion speed meets system timing constraints and that the 20-pin SOIC footprint fits the PCB layout.

Analog To Digital Converters (ADC) Part Context

This part belongs to the ADC080x family, which includes the ADC0801 through ADC0805. These devices share similar pinouts and functional architectures but differ in accuracy grades and internal reference resistor configurations. The ADC0804 specifically offers a total unadjusted error of ±1 LSB without requiring zero adjustment.

Analog To Digital Converters (ADC) Replacement Considerations

Direct replacements within the same family include ADC0801, ADC0802, ADC0803, and ADC0805. Note that these variants may have different accuracy specifications (e.g., ±1/4 LSB or ±1/2 LSB) and internal reference resistor values. Ensure the substitute part meets the required accuracy and temperature range for the application.