ADC0820BCWMX

Analog To Digital Converters (ADC) Overview

The ADC0820BCWMX is an 8-bit high-speed analog-to-digital converter manufactured by Texas Instruments. It utilizes a half-flash conversion technique combining two 4-bit flash ADCs to achieve a maximum conversion time of 1.5 µs in WR-RD mode and 2.5 µs in RD mode. The device operates on a single 5 V supply, dissipating a maximum power of 75 mW. It features a built-in track-and-hold function, tri-state latched outputs, and logic compatible with both MOS and TTL voltage levels. The component is housed in a 20-pin SOIC package.

Analog To Digital Converters (ADC) Feature Summary

• Half-flash architecture providing 1.5 µs (WR-RD) or 2.5 µs (RD) conversion times
• Built-in track-and-hold function eliminating external sample-and-hold requirements for signals under 100 mV/µs
• Tri-state latched digital outputs compatible with microprocessor interfaces
• Single 5 VDC supply operation with low power consumption of 75 mW max

Analog To Digital Converters (ADC) Applications

• Micropressor control systems requiring fast synchronization
• High-speed imaging systems such as Cranz-Schardin cameras
• Telecommunications A/D conversion applications
• Digital waveform recorders

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'BCWMX' against the manufacturer's current documentation to confirm the exact temperature range and packaging configuration. The datasheet indicates that the 'BC' series typically supports a commercial temperature range of 0°C to 70°C, while 'CC' variants support -40°C to 85°C. Ensure the ordering information matches the required environmental specifications for the target application.

Analog To Digital Converters (ADC) Selection Notes

Select this component when an 8-bit resolution with high-speed conversion is required without external sampling circuitry. It is suitable for microprocessor-based systems due to its direct interface capabilities and tri-state outputs. Consider the input slew rate limitation of approximately 100 mV/µs for accurate signal capture without distortion. Verify that the system can accommodate the 5 V logic levels and single-supply requirement.

Analog To Digital Converters (ADC) Part Context

The ADC0820-N family includes variants such as ADC0820CCWM/NOPB and ADC0820BCWM. These devices share the same core half-flash architecture and functional pinout. The primary differences lie in the temperature rating and manufacturing lot specifications defined by the ordering suffixes. The BC variant is generally designated for commercial temperature ranges, whereas CC variants cover extended industrial temperatures.

Analog To Digital Converters (ADC) Replacement Considerations

Direct replacements within the same family include ADC0820CCWMX/NOPB for extended temperature operation. Other manufacturers offer pin-compatible alternatives like the AD7820 from Analog Devices or the ADC0820 from Maxim Integrated, though electrical characteristics and timing parameters should be verified against the specific design requirements.