Overview
The TLA2021IRUGR, part of the TLA202x series from Texas Instruments, is a low-power, 12-bit delta-sigma (ΔΣ) analog-to-digital converter (ADC) designed for system-monitoring applications. This device is offered in an ultra-small, leadless 10-pin X2QFN package, measuring 1.5 mm × 2.0 mm. It is highly integrated, featuring a voltage reference, an oscillator, and an I2C-compatible interface. The TLA2021 is a single-channel ADC, making it suitable for applications requiring precise and efficient analog-to-digital conversion.
Key Specifications
| Parameter | Minimum | Typical | Maximum | Unit |
|---|---|---|---|---|
| Power-Supply Voltage (VDD to GND) | -0.3 | - | 7 | V |
| Analog Input Voltage (AIN0, AIN1) | GND - 0.3 | - | VDD + 0.3 | V |
| Digital Input Voltage (SDA, SCL, ADDR) | GND - 0.3 | - | 7 | V |
| Operating Temperature Range | -40 | - | 85 | °C |
| Current Consumption | - | 150 | - | µA |
| Data Rate | 128 SPS | - | 3.3 kSPS | - |
| Full-Scale Range (FSR) | - | - | ±2.048 V | - |
| LSB Size | - | - | 1 mV | - |
Key Features
- High Integration: Includes a voltage reference, an oscillator, and an I2C-compatible interface.
- Low Power Consumption: Operates at 150 µA, with automatic power-down after one conversion in single-shot mode.
- Flexible Input Options: Although the TLA2021 is a single-channel ADC, the series offers models with up to four single-ended or two differential inputs (TLA2024).
- Programmable Gain Amplifier (PGA): Available in TLA2022 and TLA2024 models, with selectable input ranges from ±256 mV to ±6.144 V.
- Wide Supply Range: Supports supply voltages from 2 V to 5.5 V.
- I2C Interface: Supports standard-mode and fast-mode I2C communication with three pin-selectable I2C addresses.
Applications
- Personal Electronics: TVs, tablets, cell phones, wearables, drones, and toys.
- Home and Kitchen Appliances: Various household devices requiring system monitoring.
- Building Automation: HVAC systems, smoke detectors.
- Battery Voltage and Current Monitoring: Essential for battery-powered devices.
- Temperature Sensing: For environmental and system temperature monitoring.
- Battery-Powered, Portable Instrumentation: Suitable for handheld and portable measurement devices.
Q & A
- What is the package type and size of the TLA2021IRUGR?
The TLA2021IRUGR is packaged in a 10-pin X2QFN package, measuring 1.5 mm × 2.0 mm.
- What is the resolution of the TLA2021IRUGR ADC?
The TLA2021IRUGR has a 12-bit resolution.
- What is the full-scale range (FSR) of the TLA2021IRUGR?
The FSR of the TLA2021IRUGR is fixed at ±2.048 V.
- What is the typical current consumption of the TLA2021IRUGR?
The typical current consumption is 150 µA.
- Does the TLA2021IRUGR have a programmable gain amplifier (PGA)?
No, the TLA2021IRUGR does not have a PGA; this feature is available in the TLA2022 and TLA2024 models.
- What communication interface does the TLA2021IRUGR use?
The TLA2021IRUGR uses an I2C-compatible interface.
- What are the operating temperature ranges for the TLA2021IRUGR?
The operating temperature range is from -40°C to +85°C.
- Can the TLA2021IRUGR operate in different conversion modes?
Yes, it can operate in both single-shot and continuous-conversion modes.
- How does the TLA2021IRUGR manage power consumption during idle periods?
In single-shot conversion mode, the device automatically powers down after one conversion, significantly reducing power consumption.
- What are some common applications for the TLA2021IRUGR?
Common applications include personal electronics, home and kitchen appliances, building automation, battery voltage and current monitoring, temperature sensing, and battery-powered portable instrumentation.
