Overview
The TLC2543CDWR is a 12-bit analog-to-digital converter (ADC) produced by Texas Instruments. This device is part of the TLC2543 series, which includes the TLC2543C, TLC2543I, and TLC2543M, each characterized for different operating temperature ranges. The TLC2543CDWR is specifically the CDWR package variant of the TLC2543I, which operates from –40°C to 85°C. It features a switched-capacitor, successive-approximation architecture and is designed for high-speed data transfers through a serial interface.
The device includes an on-chip 14-channel multiplexer, allowing selection from 11 analog input channels or three internal self-test voltages. It also incorporates an automatic sample-and-hold function and provides an end-of-conversion (EOC) output to indicate the completion of the conversion process.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Operating Temperature Range | –40 | 85 | °C | |
| Resolution | 12 bits | |||
| Conversion Time | 10 | µs | ||
| Analog Input Channels | 11 | |||
| Supply Voltage (VCC) | 4.5 | 5 | 5.5 | V |
| High-Level Output Voltage (VOH) | 2.4 | VCC–0.1 | V | |
| Low-Level Output Voltage (VOL) | 0.4 | 0.1 | V | |
| Linearity Error | ±1 LSB | |||
| Total Unadjusted Error | ±1.75 LSB |
Key Features
- High-Speed Conversion: 10-µs conversion time over the operating temperature range.
- Multi-Channel Input: 11 analog input channels and three internal self-test voltages.
- Automatic Sample-and-Hold Function: Ensures accurate conversion without external circuitry.
- End-of-Conversion Output: Indicates when the conversion is complete.
- Serial Interface: Allows high-speed data transfers through a serial 3-state output.
- Programmable Power Down: Reduces power consumption when not in use.
- CMOS Technology: Low power consumption and high noise immunity.
- Self-Test Modes: Three built-in self-test modes for diagnostic purposes.
- Differential High-Impedance Reference Inputs: Facilitates ratiometric conversion and isolation from noise.
Applications
- Data Acquisition Systems: Ideal for high-speed data acquisition in various industrial and medical applications.
- Remote Sensing: Suitable for remote data acquisition where the sensor and ADC are placed away from the controlling microprocessor.
- Automotive Systems: Can operate in the temperature range required for automotive applications.
- Industrial Automation: Used in control systems that require precise and fast analog-to-digital conversion.
- Medical Devices: Applicable in medical equipment that requires accurate and reliable analog-to-digital conversion.
Q & A
- What is the resolution of the TLC2543CDWR?
The TLC2543CDWR has a 12-bit resolution.
- What is the operating temperature range of the TLC2543CDWR?
The operating temperature range is from –40°C to 85°C.
- How many analog input channels does the TLC2543CDWR have?
The device has 11 analog input channels.
- What is the conversion time of the TLC2543CDWR?
The conversion time is 10 µs over the operating temperature range.
- Does the TLC2543CDWR have built-in self-test modes?
Yes, it has three built-in self-test modes.
- What type of technology is used in the TLC2543CDWR?
The device uses CMOS technology.
- How does the TLC2543CDWR indicate the end of a conversion?
The device provides an end-of-conversion (EOC) output to indicate the completion of the conversion.
- Can the TLC2543CDWR operate in power-down mode?
Yes, it has a programmable power-down feature to reduce power consumption when not in use.
- What is the supply voltage range for the TLC2543CDWR?
The supply voltage range is from 4.5 V to 5.5 V.
- Is the TLC2543CDWR suitable for remote sensing applications?
Yes, it is suitable for remote data acquisition applications where the sensor and ADC are placed several feet away from the controlling microprocessor.
