ADC0808CCVX

Analog To Digital Converters (ADC) Overview

The ADC0808CCVX is an 8-bit analog-to-digital converter manufactured by Texas Instruments, housed in a 28-pin PLCC surface-mount package. It integrates an 8-channel single-ended multiplexer with address logic and successive approximation conversion architecture. The device operates on a single 5 VDC supply within a 4.5 V to 6.5 V range, consuming approximately 15 mW of power. Key electrical specifications include a typical conversion time of 100 μs at a 640 kHz clock frequency, a total unadjusted error of ±½ LSB at 25°C, and TTL-compatible tri-state digital outputs.

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: Features an 8-channel single-ended analog input multiplexer with latched address inputs (ADDA, ADDB, ADDC).
• Microprocessor Interface: Provides latched TTL-compatible tri-state data outputs for direct connection to microprocessor buses.
• Low Power Consumption: Operates on a single 5 VDC supply with a typical current draw of 3 mA, resulting in 15 mW power dissipation.

Analog To Digital Converters (ADC) Applications

• Ratiometric data acquisition systems using potentiometers or strain gauges.
• Process control and machine control monitoring.
• Consumer electronics requiring analog signal digitization.
• Automotive applications involving sensor signal processing.

Analog To Digital Converters (ADC) Procurement Notes

The ADC0808CCVX is classified as LIFEBUY status by Texas Instruments, indicating the device is discontinued and no longer recommended for new designs. Availability is limited to remaining stock during the lifetime-buy period. Verify component authenticity and check for RoHS compliance variations, as non-NOPB versions may not meet current environmental standards.

Analog To Digital Converters (ADC) Selection Notes

Select this component only for maintenance of existing designs due to its discontinued status. Ensure the application requires an 8-bit resolution and supports the 10 kHz to 1280 kHz external clock requirement. For new designs, consider modern replacements that offer higher resolution, integrated sample-and-hold capabilities, or improved interface protocols.

Analog To Digital Converters (ADC) Part Context

The ADC0808 is part of the ADC080x family, which also includes the ADC0809. While functionally similar, the ADC0808 lacks the End-of-Conversion (EOC) output pin present on the ADC0809. Both devices share the same 8-bit SAR architecture and 8-channel multiplexer but differ slightly in pinout configuration and specific timing characteristics.

Analog To Digital Converters (ADC) Replacement Considerations

Publicly confirmed substitute part numbers are not provided in the source documentation. Designers should consult Texas Instruments for current recommendations or evaluate third-party compatible 8-bit ADCs with PLCC-28 packaging.

Analog To Digital Converters (ADC) FAQ

What is the maximum clock frequency for the ADC0808CCVX?

The maximum clock frequency is 1280 kHz. The typical conversion time of 100 μs is specified at a clock frequency of 640 kHz.

How does the ADC0808 handle analog input voltage ranges?

The analog input voltage range extends from ground (GND) to the positive supply voltage (VCC). No zero or full-scale adjustments are required internally.

Is the ADC0808CCVX RoHS compliant?

The standard ADC0808CCVX is listed as 'TBD' for lead finish and eco-plan in the addendum, implying it may not be fully RoHS compliant compared to the '/NOPB' variant. Verify specific lot markings for environmental compliance.