Overview
The TLC2543MJB, produced by Texas Instruments, is a 12-bit analog-to-digital converter (ADC) designed with serial control and featuring 11 analog input channels. This device is part of the TLC2543 series, which includes variants such as the TLC2543C, TLC2543I, and TLC2543M, each characterized by different operating temperature ranges. The TLC2543MJB is specifically designed for operation from –55°C to 125°C, making it suitable for a wide range of applications, including those in harsh environmental conditions.
The ADC uses a switched-capacitor, successive-approximation architecture and includes an on-chip 14-channel multiplexer, allowing selection of any one of the 11 analog inputs or three internal self-test voltages. It also features an inherent sample-and-hold function, on-chip system clock, and end-of-conversion output. The device supports unipolar or bipolar output operation and is programmable for MSB or LSB first output, power down, and output data length.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Resolution | 12 bits | |||
| Conversion Time | 10 µs | |||
| Operating Temperature Range | –55°C | 125°C | °C | |
| Supply Voltage (VCC) | 4.5 V | 5 V | 5.5 V | V |
| High-Level Output Voltage (VOH) | 2.4 V | VCC–0.1 V | V | |
| Low-Level Output Voltage (VOL) | 0.4 V | 0.1 V | V | |
| Operating Supply Current (ICC) | 2.5 mA | mA | ||
| Power-Down Current (ICC(PD)) | 25 µA | µA | ||
| Linearity Error | ±1 LSB | |||
| Differential Linearity Error | ±1 LSB | |||
| Offset Error | ±1.5 LSB | |||
| Gain Error | ±1 LSB | |||
| Total Unadjusted Error | ±1.75 LSB | |||
Key Features
- 12-bit resolution with 11 analog input channels
- Switched-capacitor, successive-approximation ADC architecture
- On-chip 14-channel multiplexer for selecting analog inputs or internal self-test voltages
- Inherent sample-and-hold function
- On-chip system clock and end-of-conversion output
- Unipolar or bipolar output operation (signed binary with respect to 1/2 the applied voltage reference)
- Programmable MSB or LSB first output, power down, and output data length
- CMOS technology for low power consumption
- Three built-in self-test modes
- Differential high-impedance reference inputs for ratiometric conversion, scaling, and isolation of analog circuitry
Applications
- Data acquisition systems in industrial, automotive, and aerospace environments
- Remote data acquisition applications where sensors and ADCs are placed several feet away from the controlling microprocessor
- Medical devices requiring precise analog-to-digital conversion
- Automotive systems for sensor data processing
- Industrial control systems for monitoring and control of various parameters
Q & A
- What is the resolution of the TLC2543MJB ADC?
The TLC2543MJB has a 12-bit resolution.
- What is the operating temperature range of the TLC2543MJB?
The TLC2543MJB operates from –55°C to 125°C.
- How many analog input channels does the TLC2543MJB have?
The TLC2543MJB has 11 analog input channels.
- What is the conversion time of the TLC2543MJB?
The conversion time is 10 µs over the operating temperature range.
- Does the TLC2543MJB support self-test modes?
Yes, it supports three built-in self-test modes.
- Can the TLC2543MJB operate in both unipolar and bipolar modes?
Yes, it supports both unipolar and bipolar output operation.
- What is the supply voltage range for the TLC2543MJB?
The supply voltage range is from 4.5 V to 5.5 V.
- Does the TLC2543MJB have an on-chip system clock?
Yes, it includes an on-chip system clock.
- How does the TLC2543MJB indicate the end of a conversion?
The end-of-conversion output (EOC) goes high to indicate the completion of a conversion.
- Is the TLC2543MJB suitable for use in harsh environments?
Yes, its wide operating temperature range makes it suitable for use in harsh environments.
