Overview
The REF3330AIRSER is a precision, low-dropout voltage reference from Texas Instruments, part of the REF33xx family. This component is designed for low-power and high-accuracy applications, making it ideal for a variety of portable and battery-powered devices. It is available in small packages such as SC70-3, SOT-23-3, and UQFN-8, which are beneficial for space-constrained designs. The REF3330AIRSER operates with a supply current of 3.9 μA (typical) and has an extremely low dropout voltage of 110 mV (typical), ensuring efficient operation in low-voltage systems.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Output Voltage | 2.997 | 3.0 | 3.003 | V |
| Initial Accuracy | -0.15% | 0.15% | ||
| Temperature Drift | 30 ppm/°C | |||
| Supply Current | 3.9 μA | 5 μA | ||
| Dropout Voltage | 110 mV | 180 mV | ||
| Output Noise (0.1 Hz to 10 Hz) | 84 μVPP | |||
| Operating Temperature Range | -40°C | 125°C | ||
| Maximum Input Voltage | 5.5 V | |||
| Output Current | ±5 mA |
Key Features
- Microsize packages: SC70-3, SOT-23-3, UQFN-8
- Low supply current: 3.9 μA (typical)
- Extremely low dropout voltage: 110 mV (typical)
- High output current: ±5 mA
- Low temperature drift: 30 ppm/°C (max)
- High initial accuracy: ±0.15% (max)
- Low noise performance: 84 μVPP (0.1 Hz to 10 Hz)
Applications
- Portable equipment
- Tablets and smartphones
- Hard disk drives
- Sensor modules
- Data acquisition systems
- Medical equipment
- Test equipment
Q & A
- What is the typical supply current of the REF3330AIRSER? The typical supply current is 3.9 μA.
- What are the available output voltage options for the REF33xx family? The REF33xx family includes output voltage options of 1.2 V, 1.8 V, 2.5 V, 3 V, 3.3 V, and others.
- What is the maximum dropout voltage for the REF3330AIRSER? The maximum dropout voltage is 180 mV.
- What is the temperature drift of the REF3330AIRSER? The temperature drift is 30 ppm/°C (max).
- What is the recommended capacitive load range for the output of the REF3330AIRSER? The total capacitive load at the output must be between 0.1 μF to 10 μF.
- What is the maximum input voltage for the REF3330AIRSER? The maximum input voltage is 5.5 V.
- What are the typical applications of the REF3330AIRSER? Typical applications include portable equipment, tablets and smartphones, hard disk drives, sensor modules, data acquisition systems, medical equipment, and test equipment.
- How does the REF3330AIRSER handle thermal hysteresis? Thermal hysteresis is defined as the change in output voltage after operating the device through a specified temperature range and returning to 25°C, which is typically around 90 ppm for the REF33xx family.
- What is the start-up time for the REF3330AIRSER? The start-up time is almost independent of load and typically settles within 2 ms.
- How does the REF3330AIRSER manage noise performance? The REF3330AIRSER has a typical 0.1-Hz to 10-Hz voltage noise of 84 μVPP, and additional filtering can be used to improve noise levels.
