ADC0820BCWM/NOPB

Analog To Digital Converters (ADC) Overview

The ADC0820BCWM/NOPB is an 8-bit high-speed analog-to-digital converter manufactured by Texas Instruments. It utilizes a half-flash conversion technique with a built-in track-and-hold function, eliminating the need for external sampling circuits. The device operates on a single 5V supply and features tri-state latched outputs compatible with MOS and TTL logic levels. Key electrical specifications include a maximum conversion time of 1.5 µs in WR-RD mode and 2.5 µs in RD mode. Power consumption is limited to 75 mW maximum. The component is housed in a 20-pin SOIC package and supports an operating temperature range of 0°C to +70°C.

Analog To Digital Converters (ADC) Feature Summary

• Built-in track-and-hold function allows direct interface to signals with slew rates below 100 mV/µs without external sample-and-hold circuitry.
• Half-flash architecture provides fast conversion times of 1.5 µs (WR-RD mode) or 2.5 µs (RD mode).
• Logic inputs and outputs meet both MOS and TTL voltage level specifications for easy microprocessor interfacing.
• Overflow output available for cascading multiple devices to achieve higher resolution.

Analog To Digital Converters (ADC) Applications

• Telecommunications A/D conversion systems.
• Digital waveform recorders requiring fast sampling.
• Multi-channel data acquisition systems.
• Analog multiplier applications.

Analog To Digital Converters (ADC) Procurement Notes

Verify that the suffix 'NOPB' confirms lead-free and RoHS compliance as per manufacturer standards. Confirm the 'C' grade indicates the commercial temperature range of 0°C to +70°C. Ensure the 'WM' suffix corresponds to the 20-pin SOIC package type required for the specific PCB layout.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a single-supply 8-bit ADC with integrated sampling is required. It is suitable for applications where signal slew rates are under 100 mV/µs, removing the need for external hold circuits. Choose between RD mode for simple read operations or WR-RD mode for interrupt-driven or faster read interfaces based on system timing constraints.

Analog To Digital Converters (ADC) Part Context

This part belongs to the ADC0820-N family of high-speed µP-compatible A/D converters. The BC grade denotes the commercial temperature variant (0°C to +70°C), while the CC grade covers the extended industrial range (-40°C to +85°C). The NOPB suffix indicates non-plumb (lead-free) packaging compliant with environmental directives.

Analog To Digital Converters (ADC) Replacement Considerations

Public confirmed substitute part numbers: ADC0820CCWM/NOPB.