Overview
The TLC3548CDWR is a high-performance, low-power, 14-bit resolution analog-to-digital converter (ADC) produced by Texas Instruments. This device operates from a single 5-V analog power supply and a 3-V to 5-V digital supply, making it versatile for various applications. The TLC3548CDWR features a serial interface compatible with both SPI and DSP protocols, allowing for efficient communication with external devices. It includes an on-chip analog multiplexer that can select any of its eight analog input channels or one of three self-test voltages. The device is designed for low power consumption, with power-saving features such as software power-down and autopower-down modes, and programmable conversion speeds.
Key Specifications
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| Manufacturer | Texas Instruments | Series | TLC3548 |
| Mounting Style | SMD/SMT | Resolution | 14 bit |
| Number of Channels | 8 Channel | Interface Type | 3-Wire, SPI |
| Sampling Rate | 200 kS/s | Input Type | Pseudo-Differential |
| Architecture | SAR | Analog Supply Voltage | 4.5 V to 5.5 V |
| Digital Supply Voltage | 2.7 V to 5.5 V | SNR - Signal to Noise Ratio | 81 dB |
| Minimum Operating Temperature | -40°C | Maximum Operating Temperature | +85°C |
| DNL - Differential Nonlinearity | +/- 1 LSB | INL - Integral Nonlinearity | +/- 1 LSB |
| SINAD - Signal to Noise and Distortion Ratio | 80.8 dB | Power Consumption | 20 mW |
| Reference Type | External, Internal | Supply Voltage - Max | 5.5 V, 5.5 V |
| Supply Voltage - Min | 2.7 V, 4.75 V | Package | 24-SOIC (DW) |
Key Features
- 14-Bit Resolution: High precision for accurate analog-to-digital conversion.
- Maximum Throughput 200 KSPS: High-speed conversion capability.
- Multiple Analog Inputs: 8 channels for the TLC3548 and 4 channels for the TLC3544.
- Pseudodifferential Analog Inputs: Supports both pseudodifferential and single-ended inputs.
- SPI/DSP-Compatible Serial Interfaces: With SCLK up to 25 MHz, ensuring compatibility with various microcontrollers and DSPs.
- Single 5-V Analog Supply; 3-/5-V Digital Supply: Flexible power supply options.
- Low Power Consumption: 4 mA for normal operation and 20 µA in autopower-down mode.
- Built-In 4-V Reference, Conversion Clock, and 8x FIFO: Enhances functionality and efficiency.
- Hardware-Controlled and Programmable Sampling Period: Allows for adjustable sampling periods.
- Programmable Autochannel Sweep and Repeat: Enables automated channel scanning and repeating conversions.
- Hardware Default Configuration: No software configuration required for default settings.
- High Accuracy: INL: ±1 LSB Max, DNL: ±1 LSB Max, SINAD: 80.8 dB, THD: –95 dB.
Applications
The TLC3548CDWR is suitable for a wide range of applications due to its high performance, low power consumption, and versatile interface options. Some key applications include:
- Data Acquisition Systems: Ideal for high-speed data acquisition in industrial, medical, and scientific instruments.
- Industrial Automation: Used in control systems, monitoring equipment, and other automation applications.
- Medical Devices: Suitable for medical imaging, patient monitoring, and diagnostic equipment.
- Aerospace and Defense: Used in various military and aerospace applications requiring high precision and reliability.
- Automotive Systems: Applicable in automotive control systems, sensors, and diagnostic tools.
Q & A
- What is the resolution of the TLC3548CDWR ADC?
The TLC3548CDWR has a 14-bit resolution.
- What is the maximum sampling rate of the TLC3548CDWR?
The maximum sampling rate is 200 kS/s.
- How many analog input channels does the TLC3548CDWR have?
The TLC3548CDWR has 8 analog input channels.
- What are the power supply requirements for the TLC3548CDWR?
The device operates on a single 5-V analog power supply and a 3-V to 5-V digital supply.
- What types of serial interfaces does the TLC3548CDWR support?
The device supports both SPI and DSP serial interfaces.
- What is the typical power consumption of the TLC3548CDWR in normal operation?
The typical power consumption is 4 mA for normal operation and 20 µA in autopower-down mode.
- Does the TLC3548CDWR have built-in reference and clock options?
Yes, it has a built-in 4-V reference and conversion clock.
- Can the sampling period be controlled or programmed on the TLC3548CDWR?
Yes, the sampling period can be hardware-controlled and programmable.
- What is the operating temperature range of the TLC3548CDWR?
The operating temperature range is from -40°C to +85°C.
- Is the TLC3548CDWR suitable for low-power applications?
Yes, it is designed with low power consumption features, including software power-down and autopower-down modes.
