ADC1005CCJ-1

Analog To Digital Converters (ADC) Overview

The ADC1005CCJ-1 is an obsolete 10-bit CMOS successive approximation analog-to-digital converter manufactured by Texas Instruments. It features differential analog voltage inputs and operates on a single 5V supply within a 4.5V to 6.0V range. The device provides tri-state outputs compatible with TTL/MOS logic, facilitating direct interfacing with 8-bit microprocessors via a two-byte data format. Key electrical specifications include a maximum conversion time of 50 μs at a 1.8 MHz clock frequency and a linearity error of ±1 LSB for the CCJ-1 variant. It utilizes an on-chip clock generator or external clock input.

Analog To Digital Converters (ADC) Feature Summary

• 10-bit resolution with differential analog inputs for common-mode noise rejection
• Tri-state digital outputs compatible with standard 8-bit microprocessor buses
• On-chip clock generator supporting self-clocking or external clock modes
• Ratiometric operation capability allowing VREF connection to system power supply

Analog To Digital Converters (ADC) Applications

• Microprocessor-based data acquisition systems
• Industrial process control monitoring
• Battery-powered instrumentation requiring ratiometric sensing

Analog To Digital Converters (ADC) Procurement Notes

This component is officially classified as obsolete by Texas Instruments. Production data is current only as of the publication date in the datasheet. Buyers must verify availability through authorized distributors or secondary markets, as new production from TI is discontinued. Design-in should consider long-term supply risks associated with obsolete status.

Analog To Digital Converters (ADC) Selection Notes

Select the ADC1005CCJ-1 variant specifically when an operating temperature range of -40°C to +85°C is required, as opposed to the BCJ variants which may have different industrial ratings. Ensure the application supports a 20-pin DIP package and 5V logic levels. Verify that the 50 μs conversion speed meets system timing requirements before substituting with newer high-speed converters.

Analog To Digital Converters (ADC) Part Context

The ADC1005 series was originally developed by National Semiconductor and later acquired by Texas Instruments. The document SNAS526F represents the transition of this legacy product into the TI portfolio. The 'CCJ-1' suffix denotes the ceramic DIP package variant with extended temperature capabilities, distinguishing it from plastic package options.

Analog To Digital Converters (ADC) Replacement Considerations

As an obsolete part, no direct functional equivalents are guaranteed by TI. Engineers should evaluate modern 10-bit SAR ADCs with SPI interfaces, such as the ADS7866 or ADC121S101, though these require interface adaptation. Cross-referencing with other manufacturers' 10-bit parallel ADCs is necessary for pin-compatible replacements.