Overview
The LM399H#PBF, produced by Analog Devices Inc., is a precision shunt voltage reference known for its excellent temperature stability and low noise characteristics. This component features a stabilizing heater integrated with an active Zener diode on a monolithic substrate, which significantly reduces voltage changes with temperature variations. The LM399H#PBF is ideal for applications requiring high precision and stability over a wide range of operating conditions.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Reference Voltage | - | 6.95 | 6.95 | 7.05 | V |
| Temperature Coefficient | 22°C ≤ TA ≤ 28°C | - | 0.5 | - | ppm/°C |
| Dynamic Impedance | - | - | 1 | - | Ω |
| Noise Voltage | 10Hz to 10kHz | - | 20 | - | µVRMS |
| Operating Current Range | - | 0.5 | - | 10 | mA |
| Temperature Stabilizer Supply Current | TA = 25°C, VH = 30V | 8.5 | 22 | 28 | mA |
| Warm-Up Time to ±0.05% VZ | VH = 30V | - | 3 | - | Seconds |
| Package | - | - | - | - | 4-Lead TO-46 Metal Can |
Key Features
- Excellent temperature stability over a wide range of voltage, temperature, and operating current conditions.
- Integrated stabilizing heater with the active Zener diode on a monolithic substrate to minimize temperature-induced voltage changes.
- Low noise and excellent long-term stability.
- Operating current range of 0.5mA to 10mA.
- Guaranteed initial tolerance of 2% and maximum dynamic impedance of 1Ω.
- Available in a 4-Lead TO-46 Metal Can package.
Applications
- Digital voltmeters.
- Precision calibration equipment.
- Current sources.
- Laboratory measurement equipment.
- Industrial monitor/control instruments.
- High accuracy data converters.
Q & A
- What is the reference voltage of the LM399H#PBF?
The reference voltage of the LM399H#PBF is 6.95V. - What is the temperature coefficient of the LM399H#PBF?
The temperature coefficient is 0.5 ppm/°C. - What is the dynamic impedance of the LM399H#PBF?
The dynamic impedance is 1Ω. - What is the operating current range of the LM399H#PBF?
The operating current range is from 0.5mA to 10mA. - What is the typical warm-up time to ±0.05% VZ for the LM399H#PBF?
The typical warm-up time is 3 seconds. - In what package is the LM399H#PBF available?
The LM399H#PBF is available in a 4-Lead TO-46 Metal Can package. - What are some ideal applications for the LM399H#PBF?
Ideal applications include digital voltmeters, precision calibration equipment, current sources, and laboratory measurement equipment. - How does the LM399H#PBF achieve temperature stability?
The LM399H#PBF achieves temperature stability through an integrated stabilizing heater with the active Zener diode on a monolithic substrate. - What is the noise voltage of the LM399H#PBF?
The noise voltage is 20 µVRMS over the 10Hz to 10kHz frequency range. - Is the LM399H#PBF RoHS compliant?
Yes, the LM399H#PBF is RoHS compliant.
