Overview
The REF1004C-2.5/2K5 is a high-accuracy, two-terminal bandgap reference diode produced by Texas Instruments. This component is designed to provide outstanding temperature characteristics at low operating currents, making it a cost-effective solution for applications requiring precise voltage references, low power consumption, and long-term temperature stability. The REF1004 series is a drop-in replacement for the LT1004 and an upgraded replacement for the LM185/385 series references.
Key Specifications
| Parameter | Conditions | Min | Max | Units | |
|---|---|---|---|---|---|
| Reference Voltage | IR = 100µA | 2.490 | 2.500 | 2.511 | V |
| Average Temperature Coefficient | IMIN ≤ IR ≤ 20mA | 20 | 20 | 20 | ppm/°C |
| Minimum Operating Current | 20 | 20 | 20 | µA | |
| Reverse Breakdown Voltage | IMIN ≤ IR ≤ 1mA | 1 | 1 | 1 | mV |
| Reverse Dynamic Impedance | IR = 100µA | 0.2 | 0.6 | 0.6 | Ω |
| Wide Band Noise (RMS) | 10Hz ≤ IR ≤ 10kHz | 60 | 120 | 120 | µV |
| Long Term Stability | IR = 100µA, TA = 25°C ± 0.1°C | 20 | 20 | 20 | ppm/KHr |
| Operating Temperature Range | 0°C | 70°C | °C | ||
| Package | 8-Lead SOIC |
Key Features
- High accuracy with initial accuracy of ±20mV for the REF1004-2.5 model.
- Excellent long-term temperature stability with an average temperature coefficient of 20 ppm/°C.
- Very low dynamic impedance of 0.2 to 0.6 Ω at IR = 100µA.
- Operates up to 20mA current.
- Low minimum operating current of 20µA.
- Available in an 8-lead Plastic SOIC package.
Applications
- Battery-powered test equipment.
- Portable medical instrumentation.
- Portable communications devices.
- A/D and D/A converters.
- Notebook and palmtop computers.
Q & A
- What is the reference voltage of the REF1004C-2.5?
The reference voltage of the REF1004C-2.5 is 2.5V with an initial accuracy of ±20mV.
- What is the minimum operating current for the REF1004C-2.5?
The minimum operating current for the REF1004C-2.5 is 20µA.
- What is the operating temperature range for the REF1004C-2.5?
The operating temperature range for the REF1004C-2.5 is from 0°C to 70°C.
- What package type is the REF1004C-2.5 available in?
The REF1004C-2.5 is available in an 8-lead Plastic SOIC package.
- What are some typical applications of the REF1004C-2.5?
Typical applications include battery-powered test equipment, portable medical instrumentation, portable communications devices, A/D and D/A converters, and notebook and palmtop computers.
- What is the reverse dynamic impedance of the REF1004C-2.5?
The reverse dynamic impedance of the REF1004C-2.5 is 0.2 to 0.6 Ω at IR = 100µA.
- How does the REF1004C-2.5 compare to other reference diodes like the LT1004?
The REF1004C-2.5 is a drop-in replacement for the LT1004 and offers improved specifications and stability.
- What is the long-term stability of the REF1004C-2.5?
The long-term stability of the REF1004C-2.5 is 20 ppm/KHr at IR = 100µA and TA = 25°C ± 0.1°C.
- Can the REF1004C-2.5 be used in high-temperature environments?
The REF1004C-2.5 is characterized for operation from 0°C to 70°C, but the REF1004I version operates from –40°C to +85°C.
- How is the REF1004C-2.5 shipped?
The REF1004C-2.5 is shipped in anti-static rails or tape and reel.
