Overview
The LT1004CD-2.5 is a micropower voltage reference diode produced by Texas Instruments. It is designed as a two-terminal band-gap reference, offering high accuracy and excellent temperature characteristics at very low operating currents. This device is optimized to provide specifications previously attainable only with selected units, making it an excellent choice for systems where accuracy was previously achieved at the expense of power consumption and trimming. The LT1004CD-2.5 is a pin-for-pin replacement for the LM285 and LM385 series of references, with improved specifications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Reference Voltage | 2.5 | V |
| Initial Accuracy (Max) | ±20 mV | - |
| Operating Temperature Range | 0°C to 70°C (LT1004C), -40°C to 85°C (LT1004I) | °C |
| Temperature Coefficient (Typ) | 20 ppm/°C | - |
| Minimum Reference Current (Iz) | 12 µA | - |
| Maximum Output Current (Iout) | 20 mA | - |
| Reference Impedance | 0.2 to 0.6 Ω | Ω |
| Noise Voltage (10 Hz to 10 kHz) | 120 µVrms | - |
| Package Type | 8-SOIC (D) | - |
| Package Quantity | 75 (Tube) | - |
Key Features
- Micropower operation, optimizing for low operating currents.
- High accuracy with an initial accuracy of ±20 mV for the LT1004-2.5.
- Very low reference impedance, ranging from 0.2 to 0.6 Ω.
- Excellent temperature characteristics with a temperature coefficient of 20 ppm/°C.
- Low noise voltage of 120 µVrms from 10 Hz to 10 kHz.
Applications
- Portable meter reference.
- Portable test instruments.
- Battery-operated systems.
- Current-loop instrumentation.
Q & A
- What is the primary function of the LT1004CD-2.5? The LT1004CD-2.5 is a micropower voltage reference diode designed to provide high accuracy and excellent temperature characteristics at very low operating currents.
- What is the reference voltage of the LT1004CD-2.5? The reference voltage is 2.5 V.
- What is the initial accuracy of the LT1004CD-2.5? The initial accuracy is ±20 mV.
- What is the operating temperature range for the LT1004CD-2.5? The operating temperature range is 0°C to 70°C for the LT1004C and -40°C to 85°C for the LT1004I.
- What is the maximum output current of the LT1004CD-2.5? The maximum output current is 20 mA.
- What is the typical temperature coefficient of the LT1004CD-2.5? The typical temperature coefficient is 20 ppm/°C.
- What is the noise voltage of the LT1004CD-2.5 from 10 Hz to 10 kHz? The noise voltage is 120 µVrms.
- What package type is the LT1004CD-2.5 available in? The LT1004CD-2.5 is available in an 8-SOIC (D) package.
- How many units are typically included in a tube package? A tube package typically includes 75 units.
- Is the LT1004CD-2.5 a pin-for-pin replacement for other voltage references? Yes, it is a pin-for-pin replacement for the LM285 and LM385 series of references.
