ADC1005BCJ-1

Analog To Digital Converters (ADC) Overview

The ADC1005BCJ-1 is an obsolete CMOS 10-bit successive approximation A/D converter manufactured by Texas Instruments. It features differential analog voltage inputs, an on-chip clock generator, and operates with a single 5V supply. The device outputs 10-bit data in a two-byte format compatible with 8-bit microprocessors. Key electrical specifications include a conversion time of 50 μs at 1.8 MHz clock frequency, linearity error of ±0.5 LSB, and an operating temperature range of -40°C to +85°C. It utilizes TRI-STATE outputs for easy bus interfacing.

Analog To Digital Converters (ADC) Feature Summary

• Differential analog voltage inputs with common-mode rejection
• On-chip clock generator supporting self-clocking or external CPU clocks
• TRI-STATE digital outputs for direct microprocessor bus connection
• Ratiometric operation capability with 5VDC reference or adjusted analog span

Analog To Digital Converters (ADC) Applications

• Microprocessor-based data acquisition systems
• Industrial process control monitoring
• Battery-powered instrumentation requiring low power consumption
• Temperature sensing interfaces using ratiometric transducers

Analog To Digital Converters (ADC) Procurement Notes

This component is officially classified as obsolete by Texas Instruments. Verify availability through authorized distributors or surplus suppliers. Confirm the ceramic DIP-20 package integrity and check for ESD damage prior to integration. Design-in activities should consider end-of-life status for long-term production viability.

Analog To Digital Converters (ADC) Selection Notes

Select this part for applications requiring 10-bit resolution with differential input capabilities and simple 8-bit microprocessor interfacing. Ensure the system provides a stable 5V supply within the 4.5V to 6.0V operating range. Consider the 50 μs conversion time and 1.8 MHz maximum clock frequency when designing timing constraints for the host controller.

Analog To Digital Converters (ADC) Part Context

The ADC1005BCJ-1 belongs to the ADC1005 family of 10-bit μP-compatible A/D converters. It shares functional similarities with the standard ADC1005BCJ but is specified for the industrial temperature range (-40°C to +85°C). The 'BCJ' suffix denotes the ceramic dual-in-line package variant produced by National Semiconductor, now under Texas Instruments.

Analog To Digital Converters (ADC) Replacement Considerations

As an obsolete component, direct pin-to-pin replacements are not explicitly listed in the datasheet. Evaluate modern 10-bit SAR ADCs with differential inputs and SPI/I2C interfaces. Verify that alternative devices support the required 5V logic levels and conversion speed if migrating from the parallel bus architecture.