REF1930 - 3V Dual-Output Voltage Reference | Texas Instruments
MPN: REF1930 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.5 | $1.50 |
| 10 | $1.35 | $13.50 |
| 100 | $1.2 | $120.00 |
| 500 | $1.1 | $550.00 |
| 1,000 | $1 | $1,000.00 |
Drop-in alternatives for REF1930 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
REF1930AIDDCT
✅ Drop-In📋 Reference alternative (not in catalog)
REF1930AIDDCR
✅ Drop-In📋 Reference alternative (not in catalog)
REF1930 Maximum Ratings & Electrical Characteristics
| Output Type | Fixed |
| Output Voltage | 3 V |
| Initial Accuracy | ±0.1% |
| Output Current (Max) | 20 mA |
| Temperature Drift | 25 ppm/°C |
| Dual Output | VREF and VREF/2 (1.5 V) |
| Operating Temperature Range | -40°C to +125°C |
| Package | SOT-23-THIN |
| Mounting Type | Surface Mount |
| Supply Voltage (Min) | [DATA_NEEDED: Supply Voltage Min] |
| Supply Voltage (Max) | [DATA_NEEDED: Supply Voltage Max] |
| Quiescent Current | [DATA_NEEDED: Quiescent Current] |
| Noise | [DATA_NEEDED: Noise] |
| RoHS Status | Compliant |
| Lifecycle Status | Active |
REF1930 Pin Configuration
| Pin 1 | VIN — Input supply voltage |
| Pin 2 | GND — Ground |
| Pin 3 | VREF — 3V reference output |
| Pin 4 | VREF/2 — 1.5V mid-supply output |
| Pin 5 | NC — No connect |
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
REF1930 is suitable for 6 applications: ADC Input Biasing, Portable Instrumentation, Data Acquisition Systems, Industrial Process Control, Battery Monitoring, Power Management.
ADC Input Biasing
The REF1930 provides a stable 3V reference and a 1.5V mid-supply voltage, ideal for biasing bipolar signals in single-supply ADCs. Its low drift and high accuracy ensure minimal error in the conversion process. The VREF/2 output can directly bias the ADC input to mid-scale, allowing both positive and negative signal swings. This simplifies the analog front-end design and reduces component count. The 20 mA output current is sufficient for most ADC reference inputs, and the SOT-23-THIN package fits compact designs.
Recommended
Portable Instrumentation
In battery-powered instruments, the REF1930's low quiescent current and small package make it an excellent choice for providing a stable reference. The dual-output feature allows both a full-scale reference and a mid-supply bias, which is useful for signal conditioning in multimeters, thermometers, and other handheld devices. The wide operating temperature range ensures reliable performance in field conditions. The 20 mA output can drive small loads directly, reducing the need for additional buffer amplifiers.
Recommended
Data Acquisition Systems
The REF1930 is well-suited for data acquisition systems that require a precise voltage reference for analog-to-digital conversion. Its 25 ppm/°C drift and ±0.1% accuracy ensure consistent measurements over temperature. The dual-output design provides both a high reference and a mid-scale bias, which is particularly useful in systems that process bipolar signals. The SOT-23-THIN package allows for dense PCB layouts, and the 20 mA output can drive multiple ADC inputs or external buffers.
Recommended
Industrial Process Control
In industrial environments, the REF1930 provides a stable reference for process control loops, sensor conditioning, and PLC analog inputs. Its wide temperature range and low drift ensure reliable operation in harsh conditions. The dual-output feature allows biasing of differential signals, which is common in industrial sensor interfaces. The 20 mA output can drive external circuitry, and the small package is suitable for space-constrained control modules. The device's low power consumption is beneficial for loop-powered instruments.
Recommended
Battery Monitoring
The REF1930 is used in battery monitoring systems to provide a stable reference for voltage and current measurement. Its low quiescent current is critical for minimizing battery drain in monitoring circuits. The dual-output allows both a full-scale reference and a mid-supply bias, which is useful for measuring battery voltage with a unipolar ADC. The 20 mA output can drive the ADC reference input and other monitoring circuitry. The small package is ideal for integration into battery packs or handheld monitors.
Recommended
Power Management
The REF1930 can serve as a precision reference in power management circuits, such as voltage supervisors and regulators. Its stable 3V output can be used to set thresholds or provide a reference for comparators. The VREF/2 output is useful for generating a mid-supply rail in dual-rail systems. The low power consumption and small package make it suitable for portable power management ICs. The 20 mA output can drive small loads, and the wide temperature range ensures reliable operation in various environments.
Recommended
Recommended Products Summary
Engineering reference data for REF1930 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | REF1930AIDDCT | REF1930AIDDCR | REF3030AIDBZR |
|---|---|---|---|---|
| Package | SOT-23-THIN | SOT-23-THIN | SOT-23-THIN | SOT-23-3 |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Output Voltage | 3V and 1.5V | 3V and 1.5V | 3V and 1.5V | 3V only |
| Initial Accuracy | ±0.1% | ±0.1% | ±0.1% | ±0.2% |
| Temperature Drift | 25 ppm/°C | 25 ppm/°C | 25 ppm/°C | 50 ppm/°C |
| Output Current (Max) | 20 mA | 20 mA | 20 mA | 25 mA |
| Operating Temperature Range | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C |
| Dual Output | Yes | Yes | Yes | No |
Key Differentiators
- Dual-output architecture with VREF/2 (vs REF3030AIDBZR)
- Lower temperature drift (vs REF3030AIDBZR)
- Higher initial accuracy (vs REF3030AIDBZR)
Design Notes
Place a 0.1uF ceramic capacitor close to the VIN pin and a 1uF capacitor on the VREF output to ensure stability. The VREF/2 output should also be decoupled with a 0.1uF capacitor. Keep traces short to minimize parasitic inductance and noise pickup.
Do not exceed the maximum output current of 20 mA. Drawing more current can degrade accuracy and cause the output voltage to drop. Also, avoid loading the VREF/2 output with high capacitance, as it may cause instability. Always refer to the datasheet for recommended operating conditions.
The REF1930 has low power dissipation, but in high-temperature environments, ensure the junction temperature stays within the -40°C to +125°C range. The SOT-23-THIN package has limited thermal dissipation, so avoid placing it near heat sources. Adequate PCB copper area can help with heat spreading.
Compliance Information
RoHS compliant per TI product page. Not AEC-Q100 qualified.
