Overview
The LM385BD-1.2R2 is a micropower, two-terminal bandgap voltage reference diode produced by onsemi. This device is part of the LM385 series, known for its low power consumption, high stability, and wide operating current range. It is designed to operate over a current range of 15 μA to 20 mA, making it suitable for various micropower circuit applications where extended battery life is crucial.
Key Specifications
| Characteristic | Symbol | Unit | Min | Typ | Max |
|---|---|---|---|---|---|
| Reverse Breakdown Voltage | V(BR) | V | 1.200 | 1.235 | 1.247 |
| Minimum Operating Current | IRmin | μA | 15 | - | 20 |
| Reverse Breakdown Voltage Change with Current | - | mV | - | - | 20 |
| Reverse Dynamic Impedance | Z | Ω | - | 0.6 | - |
| Average Temperature Coefficient | ΔV(BR)/ΔT | ppm/°C | - | 80 | - |
| Wideband Noise (RMS) | n | μV | - | 120 | - |
| Long Term Stability | S | ppm/kHR | - | 20 | - |
| Operating Temperature Range | TA | °C | 0 | - | 70 |
Key Features
- Exceptionally low dynamic impedance and good temperature stability.
- Tight voltage tolerance achieved through on-chip trimming.
- Low noise and long-term stability.
- Wide dynamic operating current range (15 μA to 20 mA).
- Very low power consumption, making it ideal for micropower circuitry.
- Interchangeable with industry-standard voltage references.
- Tolerant of capacitive loading, making it easier to use in most reference applications.
Applications
- Portable meter references and portable test instruments.
- Battery-operated systems and current-loop instrumentation.
- Panel meters and general-purpose analog circuitry.
- Amplifiers, power supplies, and current-sensing circuits.
Q & A
- What is the operating current range of the LM385BD-1.2R2? The operating current range is 15 μA to 20 mA.
- What is the reverse breakdown voltage of the LM385BD-1.2R2? The reverse breakdown voltage is between 1.200 V and 1.247 V.
- What is the typical reverse dynamic impedance of the LM385BD-1.2R2? The typical reverse dynamic impedance is 0.6 Ω.
- What is the average temperature coefficient of the LM385BD-1.2R2? The average temperature coefficient is 80 ppm/°C.
- What is the wideband noise (RMS) of the LM385BD-1.2R2? The wideband noise (RMS) is 120 μV.
- What is the long-term stability of the LM385BD-1.2R2? The long-term stability is 20 ppm/kHR.
- What is the operating temperature range of the LM385BD-1.2R2? The operating temperature range is from 0°C to 70°C.
- Is the LM385BD-1.2R2 suitable for micropower circuitry? Yes, it is highly suitable due to its very low power consumption and wide dynamic operating current range.
- Can the LM385BD-1.2R2 be used in battery-operated systems? Yes, it is ideal for battery-operated systems due to its low power consumption and long-term stability.
- What are the common applications of the LM385BD-1.2R2? Common applications include portable meters, test instruments, battery-operated systems, and general-purpose analog circuitry.
