TLC3548CDWR

Analog To Digital Converters (ADC) Overview

The TLC3548CDWR is a 14-bit, 200-kSPS, single-channel serial analog-to-digital converter (ADC) from Texas Instruments. It features an on-chip analog multiplexer with eight pseudodifferential inputs and operates from a single 5-V analog supply and a 3-V to 5-V digital supply. The device integrates a 4-V internal reference, conversion clock, and an 8x FIFO buffer. Key performance metrics include ±1 LSB maximum integral and differential linearity errors, a signal-to-noise-and-distortion ratio of 80.8 dB at 20 kHz, and total harmonic distortion of -95 dB. Power consumption is 4 mA in normal operation and drops to 20 µA in autopower-down mode.

Analog To Digital Converters (ADC) Feature Summary

• 14-bit resolution with 200 kSPS throughput rate
• Eight pseudodifferential analog input channels with on-chip multiplexer
• Integrated 4-V reference, conversion clock, and 8-word FIFO
• SPI/DSP-compatible serial interface with SCLK up to 25 MHz

Analog To Digital Converters (ADC) Applications

• Industrial process control systems
• Data acquisition modules
• Battery-powered instrumentation

Analog To Digital Converters (ADC) Procurement Notes

Verify the package type matches the required PCB footprint; the CDWR suffix indicates a 24-pin SOIC package. Confirm the temperature grade corresponds to the application environment, as the C suffix denotes commercial range (0°C to 70°C). Ensure power supply decoupling capacitors are placed close to AVDD and DVDD pins to maintain signal integrity and stability during high-speed sampling operations.

Analog To Digital Converters (ADC) Selection Notes

Select the TLC3548 over the TLC3544 when eight analog input channels are required. Choose this component for applications needing low power consumption with software-controllable power-down modes. Verify that the host processor supports the required SPI or DSP serial interface timing. Consider the external reference option if higher precision than the internal 4-V reference is necessary for the specific measurement range.

Analog To Digital Converters (ADC) Part Context

The TLC3548 belongs to a family of low-power CMOS ADCs that includes the four-channel TLC3544. Both devices share identical core architecture, resolution, and speed capabilities, differing only in the number of available analog input channels. This family is designed for cost-sensitive applications requiring moderate speed and high accuracy without complex external support circuitry.

Analog To Digital Converters (ADC) Replacement Considerations

The TLC3548IDW serves as the industrial temperature grade replacement for the commercial grade TLC3548CDWR. Other members of the same family include the TLC3544CDW and TLC3544CPW.