Overview
The TLA2518IRTER from Texas Instruments is a small, 8-channel, 12-bit analog-to-digital converter (ADC) with an SPI interface and general-purpose input/output (GPIO) capabilities. This successive approximation register (SAR) ADC is designed for ease of use and versatility, allowing its eight channels to be independently configured as analog inputs, digital inputs, or digital outputs. The device features an internal oscillator for ADC conversion and supports high-speed SPI communication up to 60 MHz. It also includes programmable averaging filters to reduce noise and enhance data accuracy.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | WQFN (16) | - |
| Body Size | 3.00 mm × 3.00 mm | - |
| Number of Channels | 8 | - |
| Resolution | 12 bits | - |
| Sampling Rate | 1 MSPS | - |
| AVDD Range | 2.35 V to 5.5 V | V |
| DVDD Range | 1.65 V to 5.5 V | V |
| Temperature Range | –40°C to +85°C | °C |
| SPI Interface Speed | Up to 60 MHz | MHz |
| Acquisition Time | 400 ns | ns |
| Differential Nonlinearity (DNL) | ±0.5 LSB | LSB |
| Integral Nonlinearity (INL) | ±0.5 LSB | LSB |
Key Features
- Small package size: WQFN 3 mm × 3 mm
- 8 channels configurable as any combination of analog inputs, digital inputs, or digital outputs
- GPIOs for I/O expansion: open-drain, push-pull digital outputs
- Wide operating ranges: AVDD (2.35 V to 5.5 V), DVDD (1.65 V to 5.5 V), and temperature range (–40°C to +85°C)
- Enhanced-SPI digital interface: high-speed, 60-MHz interface
- Programmable averaging filters: programmable sample size for averaging, averaging with internal conversions, and 16-bit resolution
- Internal oscillator for ADC conversion process
Applications
- Macro remote radio units (RRU)
- Battery management systems (BMS)
- String inverters
- Central inverters
Q & A
- What is the resolution of the TLA2518 ADC?
The TLA2518 has a resolution of 12 bits. - How many channels does the TLA2518 have, and how can they be configured?
The TLA2518 has 8 channels that can be independently configured as analog inputs, digital inputs, or digital outputs. - What is the maximum SPI interface speed of the TLA2518?
The maximum SPI interface speed is up to 60 MHz. - What is the operating temperature range of the TLA2518?
The operating temperature range is –40°C to +85°C. - Does the TLA2518 have programmable averaging filters?
Yes, the TLA2518 includes programmable averaging filters to reduce noise and enhance data accuracy. - What types of GPIOs are available on the TLA2518?
The TLA2518 features GPIOs for I/O expansion, including open-drain and push-pull digital outputs. - What is the acquisition time of the TLA2518?
The acquisition time is 400 ns. - Can the TLA2518 be used in battery management systems?
Yes, the TLA2518 is suitable for use in battery management systems (BMS). - Does the TLA2518 have an internal oscillator for ADC conversion?
Yes, the TLA2518 has an internal oscillator for the ADC conversion process. - What is the package type and size of the TLA2518?
The TLA2518 comes in a WQFN package with a size of 3 mm × 3 mm.
