Overview
The REF5050IDR is a precision voltage reference from Texas Instruments, part of the REF50xx family. These devices are designed to offer low noise, very low drift, and high precision, making them ideal for high-accuracy applications. The REF5050IDR is available in both high-grade and standard-grade versions, ensuring a wide range of precision needs can be met. The device operates over a temperature range of –40°C to 125°C and is packaged in 8-pin SOIC and VSSOP configurations.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Output Voltage | 4.95 | 5.0 | 5.05 | V |
| Initial Accuracy (High Grade) | -0.05% | 0.05% | ||
| Initial Accuracy (Standard Grade) | -0.1% | 0.1% | ||
| Temperature Drift (High Grade) | 2.5 | 3 | ppm/°C | |
| Temperature Drift (Standard Grade) | 3 | 8 | ppm/°C | |
| Noise (Low Frequency) | 3 | μVPP/V | ||
| Noise (High Frequency) | 0.9 | μVRMS/V | ||
| Output Current | -10 | 10 | mA | |
| Operating Temperature Range | -40 | 125 | °C | |
| Package Types | SOIC-8, VSSOP-8 |
Key Features
- Low temperature drift: High-grade versions offer a maximum drift of 3 ppm/°C, while standard-grade versions offer up to 8 ppm/°C.
- High accuracy: Initial accuracy of ±0.05% for high-grade and ±0.1% for standard-grade devices.
- Low noise: Low-frequency noise of 3 μVPP/V and high-frequency noise of 0.9 μVRMS/V.
- Excellent long-term stability: Long-term stability of 22 ppm after the first 1000 hours for SOIC-8 and 50 ppm for VSSOP-8 packages.
- High-output current: Capable of sourcing and sinking up to ±10 mA.
- Temperature monitoring: The TEMP pin provides a temperature-dependent output voltage, useful for indicating temperature changes or for temperature compensation.
Applications
- Precision data acquisition systems
- Semiconductor test equipment
- Industrial process controls
- Medical instrumentation
- Pressure and temperature transmitters
- Lab and field instrumentation
Q & A
- What is the output voltage of the REF5050IDR? The output voltage of the REF5050IDR is 5.0 V, with an initial accuracy of ±0.05% for high-grade and ±0.1% for standard-grade devices.
- What is the temperature drift of the REF5050IDR? The temperature drift is 2.5 to 3 ppm/°C for high-grade and 3 to 8 ppm/°C for standard-grade devices.
- What is the noise level of the REF5050IDR? The low-frequency noise is 3 μVPP/V, and the high-frequency noise is 0.9 μVRMS/V.
- What is the operating temperature range of the REF5050IDR? The operating temperature range is –40°C to 125°C.
- What are the package types available for the REF5050IDR? The device is available in 8-pin SOIC and VSSOP packages.
- Can the REF5050IDR source and sink current? Yes, it can source and sink up to ±10 mA.
- Does the REF5050IDR have a temperature monitoring feature? Yes, the TEMP pin provides a temperature-dependent output voltage.
- What are some typical applications of the REF5050IDR? Typical applications include precision data acquisition systems, semiconductor test equipment, industrial process controls, medical instrumentation, and lab and field instrumentation.
- How stable is the REF5050IDR over time? The device has excellent long-term stability, with 22 ppm after the first 1000 hours for SOIC-8 and 50 ppm for VSSOP-8 packages.
- What is the quiescent current of the REF5050IDR? The quiescent current is typically 1 mA, with a maximum of 1.2 mA over the operating temperature range.
