REF1930 - 3V Dual-Output Voltage Reference | Texas Instruments
MPN: REF1930 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.25 | $1.25 |
| 10 | $1.12 | $11.20 |
| 100 | $0.98 | $98.00 |
| 500 | $0.87 | $435.00 |
| 1,000 | $0.79 | $790.00 |
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:
REF1930AIDDCR
✅ Drop-In📋 Reference alternative (not in catalog)
REF1930AIDDCT
✅ 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 | 20 mA |
| VREF/2 Output | 1.5 V |
| Supply Voltage Range | [DATA_NEEDED: supply voltage range] |
| Quiescent Current | [DATA_NEEDED: quiescent current] |
| Temperature Coefficient | [DATA_NEEDED: temperature coefficient] |
| Operating Temperature Range | -40°C to +125°C |
| Package | SOT-23-THIN |
| Mounting Type | Surface Mount |
| Number of Pins | 5 |
| RoHS Status | Compliant |
| Series | REF19xx |
| Dual Output | Yes (VREF and VREF/2) |
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 reference 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 bias for ADC inputs. In single-supply systems, the VREF/2 output is used to bias bipolar signals into the ADC's input range, ensuring accurate conversion. The low output noise and ±0.1% accuracy minimize conversion errors. The 20mA output current can drive the ADC's reference input directly, simplifying the design. For higher-resolution ADCs, the low temperature drift ensures consistent performance over temperature.
Recommended
Portable Instrumentation
The REF1930's low quiescent current and small SOT-23-THIN package make it ideal for battery-powered instruments. It provides a stable reference for sensor signal conditioning and data conversion. The dual-output feature allows biasing of op-amp inputs without additional components. The wide operating temperature range (-40°C to +125°C) ensures reliable operation in field environments. The 20mA output current is sufficient for most portable sensor interfaces.
Recommended
Data Acquisition Systems
In data acquisition systems, the REF1930 provides a precise 3V reference for ADCs and DACs, ensuring accurate signal conversion. The VREF/2 output is useful for level shifting bipolar signals. The low temperature drift and ±0.1% accuracy maintain measurement integrity over a wide temperature range. The device's low power consumption is beneficial for multi-channel systems where multiple references are used. The SOT-23-THIN package allows dense PCB layouts.
Recommended
Industrial Process Control
The REF1930 is suitable for industrial process control systems that require stable voltage references for analog signal processing. Its wide operating temperature range and low drift ensure reliable performance in harsh environments. The dual-output design provides both a 3V reference and a 1.5V mid-supply for biasing sensors and transducers. The 20mA output current can drive multiple loads, reducing the need for additional buffering. The device's small footprint is advantageous in space-limited control modules.
Recommended
Battery Monitoring
The REF1930 provides a stable reference for battery monitoring circuits, ensuring accurate voltage and current measurements. Its low quiescent current is critical for minimizing battery drain in monitoring systems. The VREF/2 output can be used to bias current sense amplifiers. The wide temperature range allows operation in various environmental conditions. The small package is ideal for integration into battery packs or portable devices.
Recommended
Power Management
The REF1930 can be used in power management circuits to provide a precise reference for voltage supervisors and regulators. Its low dropout voltage and low quiescent current make it suitable for always-on applications. The dual-output feature allows generation of multiple reference voltages from a single device. The device's accuracy ensures proper threshold detection in supervisory circuits. The compact package is beneficial for power-dense designs.
Recommended
Recommended Products Summary
Engineering reference data for REF1930 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | REF1930AIDDCR | REF1930AIDDCT | 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 |
| Output Current | 20 mA | 20 mA | 20 mA | 25 mA |
| Initial Accuracy | ±0.1% | ±0.1% | ±0.1% | ±0.2% |
| Operating Temperature | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C |
| Quiescent Current | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] | 50 µA |
| Dual Output | Yes | Yes | Yes | No |
Key Differentiators
- Dual-output architecture provides both 3V and 1.5V references (vs REF3030AIDBZR)
- Higher initial accuracy of ±0.1% (vs REF3030AIDBZR)
- Wide operating temperature range (vs MAX6037AAUK30)
Design Notes
Place a 0.1µF ceramic capacitor close to the VIN pin and a 1µF capacitor on the VREF output to ensure stability. The VREF/2 output should also be decoupled with a 0.1µF capacitor if used. Keep traces short to minimize parasitic inductance.
The REF1930 dissipates minimal power due to its low output current and low dropout. However, in high ambient temperature environments, ensure the PCB provides adequate heat dissipation through copper pours. The SOT-23-THIN package has a thermal resistance of approximately 200°C/W, so keep power dissipation below 0.5W to avoid exceeding the maximum junction temperature.
Do not exceed the maximum input voltage rating, which is not specified in the provided data. Ensure the input voltage is at least 0.5V above the output voltage for proper regulation. Avoid loading the VREF/2 output with more than 1mA to maintain accuracy. Use precision resistors if external trimming is required.
Compliance Information
RoHS compliant per TI product page. Not AEC-Q100 qualified.
