Overview
The LM385BD-1.2 is a micropower, two-terminal, band-gap voltage reference produced by Texas Instruments. This device operates over a wide current range of 10 μA to 20 mA and is known for its exceptionally low dynamic impedance and good temperature stability. The LM385BD-1.2 features on-chip trimming, which provides tight voltage tolerance, and it has low noise and long-term stability. Although this product is no longer in production, it remains a significant component in various legacy and maintenance applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Reference Voltage | 1.223 to 1.247 | V |
| Operating Current Range | 15 μA to 20 mA | A |
| Initial Voltage Tolerance | 1% and 2% | % |
| Reference Impedance | 1 Ω MAX at 25°C, 1.5 Ω MAX over full temperature range | Ω |
| Average Temperature Coefficient of Reference Voltage | ±20 ppm/°C | ppm/°C |
| Operating Temperature Range | 0°C to 70°C | °C |
| Package Type | SOIC (D), SOP (PS), TSSOP (PW), TO-226 / TO-92 (LP) |
Key Features
- Operating current range: 15 μA to 20 mA
- 1% and 2% initial voltage tolerance
- Low dynamic impedance: 1 Ω MAX at 25°C, 1.5 Ω MAX over full temperature range
- Very low power consumption
- Interchangeable with industry standard LM285-1.2 and LM385-1.2
- Exceptionally tolerant of capacitive loading
- Good temperature stability and long-term stability
- Pb-free and RoHS compliant
Applications
- Portable meter references
- Portable test instruments
- Battery-operated systems
- Current-loop instrumentation
- Panel meters
- General-purpose analog circuitry
Q & A
- What is the reference voltage of the LM385BD-1.2?
The reference voltage of the LM385BD-1.2 is between 1.223 V and 1.247 V.
- What is the operating current range of the LM385BD-1.2?
The operating current range is from 15 μA to 20 mA.
- What are the initial voltage tolerance options for the LM385BD-1.2?
The initial voltage tolerance options are 1% and 2%.
- What is the reference impedance of the LM385BD-1.2?
The reference impedance is 1 Ω MAX at 25°C and 1.5 Ω MAX over the full temperature range.
- What is the operating temperature range of the LM385BD-1.2?
The operating temperature range is from 0°C to 70°C.
- Is the LM385BD-1.2 still in production?
No, the LM385BD-1.2 is no longer in production.
- What are some common applications of the LM385BD-1.2?
Common applications include portable meter references, portable test instruments, battery-operated systems, current-loop instrumentation, and panel meters.
- Is the LM385BD-1.2 interchangeable with other models?
- What are the packaging options for the LM385BD-1.2?
The packaging options include SOIC (D), SOP (PS), TSSOP (PW), and TO-226 / TO-92 (LP).
- Is the LM385BD-1.2 Pb-free and RoHS compliant?
