ADC0808CCV

Analog To Digital Converters (ADC) Overview

The ADC0808CCV is an 8-bit analog-to-digital converter (ADC) manufactured by Texas Instruments. It integrates an 8-channel single-ended multiplexer with address logic and a successive approximation register (SAR) architecture. The device operates on a single 5 VDC supply, consuming 15 mW of power. It features tri-state data outputs for direct microprocessor interfacing and requires no zero or full-scale adjustments. The component is housed in a 28-pin PLCC package and supports a conversion time of 100 μs at a clock frequency of 640 kHz.

Analog To Digital Converters (ADC) Feature Summary

• 8-Bit SAR Architecture: Utilizes a 256R resistor ladder network and chopper-stabilized comparator for monotonicity and low drift.
• Integrated Multiplexer: Includes an 8-channel analog multiplexer with latched address inputs (ADDA, ADDB, ADDC).
• Microprocessor Compatible: Features tri-state TTL-compatible digital outputs and simple control logic (START, OE, EOC).
• Low Power Consumption: Operates on a single 5 VDC supply with typical current draw of 0.3 mA.

Analog To Digital Converters (ADC) Applications

• Process and machine control systems requiring multi-channel data acquisition.
• Consumer electronics utilizing ratiometric transducers such as potentiometers.
• Automotive applications involving sensor signal conditioning.
• Industrial monitoring systems using strain gauges or thermistor bridges.

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'CCV' corresponds to the 28-lead Plastic Leadless Chip Carrier (PLCC) package variant. Confirm that the 'LIFEBUY' status indicates the device is discontinued for new designs but available for lifetime purchase. Ensure compatibility with existing board layouts designed for the PLCC footprint before procurement.

Analog To Digital Converters (ADC) Selection Notes

Select this component when an 8-bit resolution with an integrated 8-channel multiplexer is required. It is suitable for applications where ratiometric measurement simplifies reference voltage requirements. Consider the 100 μs conversion time and 640 kHz maximum clock frequency for timing constraints. Verify that the single-ended input range matches the system's analog signal levels.

Analog To Digital Converters (ADC) Part Context

The ADC0808 is part of the ADC0808/ADC0809 family of 8-bit μP-compatible A/D converters. It is functionally equivalent to the MM74C949. While similar to the ADC0809, the ADC0808 lacks the internal clock generator found in the ADC0809, requiring an external clock source. Both devices share the same pinout and core conversion architecture.

Analog To Digital Converters (ADC) Replacement Considerations

The ADC0809CCV is a pin-compatible alternative within the same family, differing primarily by the inclusion of an internal clock generator. Other 8-bit SAR ADCs may require significant circuit redesign due to interface or pinout differences.