ADC0809CCVX

Analog To Digital Converters (ADC) Overview

The ADC0809CCVX is a monolithic CMOS 8-bit analog-to-digital converter featuring an 8-channel multiplexer with address logic. It utilizes successive approximation conversion techniques and operates ratiometrically or with a fixed 5 VDC reference. The device provides TTL-compatible tri-state outputs for direct microprocessor interfacing, eliminating the need for external zero or full-scale adjustments. Key electrical specifications include a typical conversion time of 100 μs at a 640 kHz clock frequency, a total unadjusted error of ±1 LSB across the operating temperature range, and low power consumption of 15 mW.

Analog To Digital Converters (ADC) Feature Summary

• Integrated 8-channel single-ended analog multiplexer with latched address inputs
• Successive approximation architecture with chopper-stabilized comparator
• TTL-compatible tri-state digital outputs for direct bus connection
• Ratiometric operation capability with 0V to VCC input range

Analog To Digital Converters (ADC) Applications

• Industrial process control systems requiring multi-channel data acquisition
• Machine control interfaces for sensor signal digitization
• Consumer electronics utilizing proportional relationship measurements
• Automotive applications involving environmental parameter monitoring

Analog To Digital Converters (ADC) Procurement Notes

Verify component status as the ADC0809CCVX is designated LIFEBUY by Texas Instruments. This indicates the device is discontinued for new designs but available for lifetime purchase during the specified period. Confirm RoHS compliance requirements, as standard versions may differ from NOPB variants regarding halogen content and lead finish specifications.

Analog To Digital Converters (ADC) Selection Notes

Select this component when interfacing with microprocessors requiring simple TTL-level control signals such as START, ALE, and OE. Ensure the application supports the 4.5 VDC to 6.0 VDC supply voltage range. For designs requiring higher channel counts, consider the ADC0816 which provides a 16-channel multiplexer with a common sample/hold port instead of multiple discrete converters.

Analog To Digital Converters (ADC) Part Context

The ADC0809 is functionally equivalent to the MM74C949-1 and serves as the counterpart to the ADC0808. While both devices share identical core conversion capabilities, they differ in output bit ordering; the ADC0809 maps the least significant bit to OUT0, whereas the ADC0808 maps it to OUT7. Both belong to the same family of 8-bit μP-compatible A/D converters designed for general-purpose data acquisition tasks.

Analog To Digital Converters (ADC) Replacement Considerations

Public confirmed substitute part numbers: ADC0809CCN (PDIP package), ADC0809CCV (PLCC tube). Verify pinout compatibility and software bit-ordering adjustments if replacing ADC0808 variants.