TLC1543IDWR

Analog To Digital Converters (ADC) Overview

The TLC1543IDWR is a CMOS 10-bit successive-approximation analog-to-digital converter featuring an on-chip 14-channel multiplexer. It provides 11 external analog input channels and three internal self-test modes, with a maximum sampling rate of 38 kSPS. The device operates within a supply voltage range of 4.5 V to 5.5 V and supports a serial interface clock frequency up to 2.1 MHz. Total unadjusted error is specified at ±1 LSB maximum. The IDWR suffix indicates an industrial temperature range of -40°C to 85°C and a 20-pin SOIC (DW) surface-mount package.

Analog To Digital Converters (ADC) Feature Summary

• Inherent sample-and-hold function eliminates the need for external holding circuits
• Terminal compatible with the legacy TLC542 series for direct pin replacement
• Differential high-impedance reference inputs facilitate ratiometric conversion and noise isolation
• Built-in end-of-conversion output signals data readiness to the host processor

Analog To Digital Converters (ADC) Applications

• Industrial control systems requiring multi-channel sensor signal acquisition
• Power supply monitoring applications utilizing ratiometric measurement techniques
• Embedded data acquisition systems with limited microcontroller I/O resources

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific ordering suffix against current Texas Instruments documentation to confirm the active production status and exact package variant. Ensure the selected grade matches the required operating temperature range for the target environment. Cross-reference the manufacturer part number with authorized distributors to confirm availability and compliance with RoHS standards prior to finalizing procurement orders.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a 10-bit resolution and moderate speed are sufficient for the application requirements. The device is suitable for designs needing multiple analog inputs without external multiplexers. Verify that the host processor can generate the required four-wire serial interface timing. Consider the total unadjusted error specification relative to the system accuracy needs before finalizing the design choice.

Analog To Digital Converters (ADC) Part Context

This device belongs to the TLC1542/TLC1543 family of 10-bit ADCs manufactured by Texas Instruments. The family utilizes switched-capacitor technology to achieve low-error conversion across the operating temperature range. The TLC1543 variant specifically includes 11 analog inputs compared to the 8 inputs found in the TLC1542 counterpart, offering greater channel density for similar interface requirements.

Analog To Digital Converters (ADC) Replacement Considerations

The TLV1543 is a confirmed terminal-compatible substitute within the Texas Instruments portfolio. Designers should verify that the electrical specifications of the replacement meet the original circuit requirements.