TLC0820ACFNR

Analog To Digital Converters (ADC) Overview

The TLC0820ACFNR is an obsolete 8-bit analog-to-digital converter utilizing Advanced LinCMOS technology and modified flash techniques. It features a single-channel architecture with on-chip track-and-hold circuitry, eliminating the need for external sampling components. The device operates on a single 5-V supply (4.5 V to 8 V) and provides parallel microprocessor interfacing via TTL-compatible 3-state outputs. Key electrical parameters include a maximum conversion time of 2.5 μs in read mode and a typical internal delay of 800 ns in write-read mode. The total unadjusted error is specified as ±1 LSB across the operating temperature range.

Analog To Digital Converters (ADC) Feature Summary

• Modified flash technique enables high-speed 8-bit conversions without external clock or oscillator components.
• Integrated track-and-hold circuit supports continuous analog signal processing with slew rates up to 100 mV/μs.
• Dual-mode operation allows flexible interfacing through selectable Read and Write-Read configurations.
• Differential reference inputs facilitate ratiometric conversion capabilities.

Analog To Digital Converters (ADC) Applications

• Microprocessor-based data acquisition systems requiring direct parallel interface.
• Industrial control applications involving sensor signal digitization.
• Test and measurement equipment utilizing single-supply architectures.

Analog To Digital Converters (ADC) Procurement Notes

Verify component obsolescence status prior to design implementation. Confirm that the specific ordering suffix corresponds to the required package type and temperature grade. Ensure compatibility with existing system voltage levels and timing constraints. Review available replacement options if production continuity is required.

Analog To Digital Converters (ADC) Selection Notes

Select this component for applications necessitating fast, standalone 8-bit conversion with minimal external support circuitry. Evaluate the trade-off between the 2.5 μs maximum conversion latency and the simplified interface requirements. Consider the ±1 LSB total unadjusted error specification against system accuracy needs.

Analog To Digital Converters (ADC) Part Context

This device belongs to the TLC0820A family of high-speed ADCs manufactured by Texas Instruments. It serves as a direct replacement for legacy National Semiconductor ADC0820C/CC and Analog Devices AD7820K/B/T parts. The family utilizes Advanced LinCMOS silicon-gate technology to achieve low power consumption while maintaining high conversion speeds.

Analog To Digital Converters (ADC) Replacement Considerations

Public confirmed substitute part numbers include TLC0820ACDW, TLC0820AIN, and TLC0820AIDW. These variants share identical functional specifications but differ in package style or industrial temperature rating.