TLC1543ING4

Analog To Digital Converters (ADC) Overview

The TLC1543ING4 is a CMOS 10-bit switched-capacitor successive-approximation analog-to-digital converter manufactured by Texas Instruments. It features an on-chip 14-channel multiplexer providing access to 11 analog inputs and three internal self-test voltages. The device utilizes a serial interface with Chip Select (CS), Address, I/O Clock, and Data Out terminals for host processor communication. Operating characteristics include a supply voltage range of 4.5 V to 5.5 V, a maximum conversion time of 21 µs, and a total unadjusted error of ±1 LSB. It supports differential reference inputs for ratiometric conversion and operates within temperature ranges defined by its grade.

Analog To Digital Converters (ADC) Feature Summary

• CMOS technology enabling low-power operation and high-speed data transfer via a direct 4-wire serial interface.
• Integrated 14-channel multiplexer allowing selection among 11 external analog channels or 3 internal self-test modes.
• Inherent sample-and-hold function that automatically captures the input signal during the conversion cycle.
• Differential reference voltage inputs (REF+ and REF-) facilitating flexible scaling and isolation from logic noise.

Analog To Digital Converters (ADC) Applications

• Industrial control systems requiring multi-channel sensor data acquisition.
• Portable instruments utilizing battery-powered embedded architectures.
• Medical monitoring equipment needing precise analog signal digitization.
• Test and measurement devices employing serial communication protocols.

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'ING4' against the manufacturer's current production status, as legacy part numbers may have superseded variants. Confirm the package type corresponds to the Plastic DIP (N) option in the official datasheet. Ensure the ordering information matches the required operating temperature range for the intended application environment before finalizing procurement.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a 10-bit resolution and 11-channel multiplexing capability are required within a single IC. The device is suitable for applications where serial interface simplicity reduces microcontroller pin count. Consider the 4.5 V to 5.5 V supply requirement and the specific temperature grade associated with the 'I' designation when designing for industrial environments.

Analog To Digital Converters (ADC) Part Context

The TLC1543 belongs to the broader family of 10-bit successive-approximation ADCs from Texas Instruments, sharing architectural similarities with the TLC1542 which offers fewer analog inputs. This series is characterized by its switched-capacitor design and compatibility with standard serial ports. The 'I' suffix typically denotes an extended industrial temperature range compared to commercial grades.

Analog To Digital Converters (ADC) Replacement Considerations

The TLC1542 serves as a terminal-compatible alternative offering similar functionality but with reduced channel count. Verify pinout compatibility and software register mapping when substituting between these models. Ensure the replacement part meets the specific temperature and voltage requirements of the original design.

Analog To Digital Converters (ADC) FAQ

How does the TLC1543 handle the transition between sampling and conversion?

The device employs an inherent sample-and-hold function. Sampling begins on the falling edge of the fourth I/O clock and continues until the tenth falling edge, at which point the sample is held and the successive-approximation conversion process initiates.

What is the purpose of the three built-in self-test modes?

The self-test modes allow verification of the ADC's linearity and functionality by internally selecting reference voltages corresponding to zero-scale, mid-scale, and full-scale outputs without requiring external analog signals.

Can the TLC1543 operate with a single-ended reference configuration?

Yes, the REF- terminal can be connected to ground while REF+ is connected to VCC, establishing a single-ended reference range. However, differential connections are recommended to isolate analog circuitry from supply noise.