REF3030AIDBZR - 3V Precision Voltage Reference | Texas Instruments
MPN: REF3030AIDBZR ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.85 | $0.85 |
| 10 | $0.76 | $7.60 |
| 100 | $0.68 | $68.00 |
| 500 | $0.61 | $305.00 |
| 1,000 | $0.55 | $550.00 |
Drop-in alternatives for REF3030AIDBZR — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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REF3030AIDBZR Maximum Ratings & Electrical Characteristics
| Output Type | Fixed |
| Output Voltage | 3 V |
| Initial Accuracy | ±0.2% |
| Temperature Coefficient | 50 ppm/°C (max) |
| Output Current | 25 mA |
| Quiescent Current | 42 µA (typical) |
| Input Voltage Range | 3.05 V to 5.5 V |
| Dropout Voltage | 0.05 V (typical) |
| Output Noise | 50 µVrms (10 Hz to 10 kHz) |
| Operating Temperature Range | -40°C to +125°C |
| Package | SOT-23-3 |
| Mounting Type | Surface Mount |
| Number of Pins | 3 |
| RoHS Status | Compliant |
| Lead-Free | Yes |
REF3030AIDBZR Pin Configuration
| Pin 1 | IN — Input voltage (3.05V to 5.5V) |
| Pin 2 | GND — Ground |
| Pin 3 | OUT — 3V reference output |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
REF3030AIDBZR is suitable for 6 applications: Portable Battery-Powered Devices, Data Acquisition Systems, Industrial Process Control, Medical Monitoring Equipment, Precision Instrumentation, Automotive Electronics.
Portable Battery-Powered Devices
The REF3030AIDBZR's low quiescent current of 42 µA and small SOT-23-3 package make it ideal for battery-powered devices such as handheld multimeters, wireless sensors, and portable medical monitors. Its 3V output is compatible with many low-power microcontrollers and ADCs, providing a stable reference for accurate measurements while minimizing power drain to extend battery life. The low dropout voltage allows operation from a 3.3V rail or a single Li-ion cell, and the device's precision ensures reliable performance over the battery's discharge curve.
Recommended
Data Acquisition Systems
In data acquisition systems, the REF3030AIDBZR provides a precise 3V reference for ADCs and DACs, ensuring accurate conversion results. Its low noise of 50 µVrms and temperature drift of 50 ppm/°C maintain signal integrity over a wide temperature range. The device can source up to 25 mA, sufficient for driving multiple converter references. Its small footprint allows placement close to converters, minimizing trace inductance and noise pickup. This makes it suitable for industrial process control, laboratory instruments, and environmental monitoring systems.
Recommended
Industrial Process Control
The REF3030AIDBZR is well-suited for industrial process control systems that require stable voltage references for sensor signal conditioning and control loops. Its wide operating temperature range of -40°C to +125°C ensures reliable operation in harsh environments. The low dropout voltage allows it to operate from a 3.3V or 5V supply with minimal headroom, and its low quiescent current reduces power dissipation in the control cabinet. The device's precision and stability help maintain accurate setpoints and measurements in temperature controllers, pressure transmitters, and flow meters.
Recommended
Medical Monitoring Equipment
In medical monitoring equipment such as patient monitors and diagnostic devices, the REF3030AIDBZR provides a reliable 3V reference for analog front-ends and data converters. Its low power consumption is critical for battery-operated devices, and its precision ensures accurate readings of vital signs. The small SOT-23-3 package allows for compact PCB designs, which is essential for wearable and portable medical devices. The device's low noise performance helps maintain signal integrity in ECG, EEG, and pulse oximetry applications.
Recommended
Precision Instrumentation
The REF3030AIDBZR is ideal for precision instrumentation such as digital multimeters, bench power supplies, and calibration equipment. Its high initial accuracy of ±0.2% and low temperature drift ensure that measurements remain accurate over time and temperature. The device's low noise and low dropout voltage make it suitable for use in high-resolution measurement circuits. The SOT-23-3 package is easy to integrate into existing designs, and the device's low quiescent current is beneficial for battery-powered instruments.
Recommended
Automotive Electronics
Although not AEC-Q100 qualified, the REF3030AIDBZR can be used in non-safety automotive applications such as infotainment systems and body control modules. Its wide temperature range and low power consumption make it suitable for under-hood environments. The 3V output is compatible with many automotive microcontrollers and sensors. The device's small package and low dropout voltage allow it to be powered from a regulated 3.3V rail, providing a stable reference for ADCs in battery monitoring and climate control systems.
Recommended
Recommended Products Summary
Engineering reference data for REF3030AIDBZR — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | REF3030AIDBZT | REF3030EAIDBZR | REF3033AIDBZR | MCP1501-30E/SN | LM4040CIM3-3.0/NOPB |
|---|---|---|---|---|---|---|
| Package | SOT-23-3 | SOT-23-3 | SOT-23-3 | SOT-23-3 | SOT-23-3 | SOT-23-3 |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Microchip Technology | Texas Instruments |
| Output Voltage | 3V | 3V | 3V | 3.3V | 3V | 3V |
| Initial Accuracy | ±0.2% | ±0.2% | ±0.1% | ±0.2% | ±0.1% | ±0.5% |
| Temperature Coefficient | 50 ppm/°C | 50 ppm/°C | 30 ppm/°C | 50 ppm/°C | 50 ppm/°C | 100 ppm/°C |
| Quiescent Current | 42 µA | 42 µA | 25 µA | 42 µA | 60 µA | 60 µA (shunt) |
| Output Current | 25 mA | 25 mA | 25 mA | 25 mA | 20 mA | 15 mA |
| Reference Type | Series | Series | Series | Series | Series | Shunt |
Key Differentiators
- Low quiescent current of 42 µA (vs MCP1501-30E/SN)
- Higher output current of 25 mA (vs LM4040CIM3-3.0/NOPB)
- Series reference with low dropout (vs LM4040CIM3-3.0/NOPB)
Design Notes
Place a 0.1 µF ceramic capacitor as close as possible to the OUT pin to ensure stability and reduce output noise. A 1 µF capacitor on the IN pin is recommended to filter supply noise. The SOT-23-3 package has a thermal pad that should be connected to a ground plane for improved thermal performance, though power dissipation is typically low.
The REF3030AIDBZR has a low dropout voltage of 0.05V, allowing operation with input voltages as low as 3.05V. Ensure the input voltage does not exceed the absolute maximum rating of 6V. The device can source up to 25 mA, but power dissipation should be considered: at 25 mA and 2.5V dropout, the device dissipates 62.5 mW, which is well within the SOT-23-3 package's thermal capability.
Do not connect a large capacitive load (greater than 10 µF) directly to the output without verifying stability, as this may cause oscillation. Also, avoid routing the output trace near high-frequency digital signals to prevent noise coupling. The device is not designed for negative output voltages; use a shunt reference like the LM4040 for negative rail applications.
Compliance Information
RoHS compliant and lead-free per TI product page. Not AEC-Q100 qualified.
