ADC0820CCN/PB

Analog To Digital Converters (ADC) Overview

The ADC0820CCN/PB is an 8-bit high-speed analog-to-digital converter featuring a built-in track-and-hold function and latched TRI-STATE outputs. Utilizing a half-flash conversion technique with 32 comparators, it achieves 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 VDC supply, dissipating a maximum of 75 mW. It offers a total unadjusted error of ±1 LSB for the CC grade and interfaces directly with microprocessors without external logic. The component supports ratiometric operation and provides an overflow output for cascading applications.

Analog To Digital Converters (ADC) Feature Summary

• Built-in Track-and-Hold Function eliminates external sample-and-hold requirements for signals under 100 mV/µs
• No Missing Codes with Total Unadjusted Error of ±1 LSB (CC Grade)
• Latched TRI-STATE Data Outputs (DB0-DB7) for direct microprocessor interface
• Single 5 VDC Supply Operation with Low Power Dissipation of 75 mW Max

Analog To Digital Converters (ADC) Applications

• Telecommunications A/D Conversion
• Digital Waveform Recording
• Fast Infinite Sample-and-Hold Systems
• 8-Bit to 10-Bit Cascaded Resolution Configurations

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'CN' corresponds to the 20-Pin SOIC package and 'PB' indicates lead-free compliance as per Texas Instruments standards. Confirm the operating temperature range for the CC grade is 0°C to +70°C. Ensure the source document matches SNAS529C for accurate electrical specifications regarding RD and WR-RD modes.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a fast 8-bit conversion rate is required without external sampling circuitry. The CC grade specifies a total unadjusted error of ±1 LSB, suitable for general-purpose precision applications. Choose WR-RD mode for interrupt-driven systems or RD mode for simpler timing control. Ensure the analog input slew rate remains below 100 mV/µs to maintain accuracy without external hold circuits.

Analog To Digital Converters (ADC) Part Context

The ADC0820-N series uses a unique half-flash architecture combining two 4-bit flash converters. This design allows for rapid conversion times by performing simultaneous comparisons in most significant and least significant bit stages. The device integrates a sampled-data comparator structure that inherently samples the input voltage during the conversion cycle, distinguishing it from conventional successive approximation registers.

Analog To Digital Converters (ADC) Replacement Considerations

Public confirmed substitute part numbers are not available in the provided datasheet. Verify pin compatibility and electrical specifications against alternative 8-bit ADCs if cross-referencing is required.