Overview
The REF5040IDRG4 is part of the REF50xx family of low-noise, low-drift, very high precision voltage references produced by Texas Instruments. These voltage references are designed to offer excellent initial voltage accuracy and drift, making them ideal for high-precision applications. The REF5040IDRG4 specifically provides a reference voltage of 4.096 volts and is available in an 8-pin VSSOP package.
The device is capable of both sinking and sourcing current and features excellent line and load regulation. It operates over a wide temperature range from –40°C to 125°C, ensuring stability and accuracy across various environmental conditions.
Key Specifications
| Parameter | Test Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Output Voltage (VOUT) | VIN = (VOUT + 0.2 V) to 18 V | 4.096 | - | - | V |
| Initial Accuracy (High Grade) | - | -0.05% | 0.05% | - | % |
| Initial Accuracy (Standard Grade) | - | -0.1% | 0.1% | - | % |
| Output Voltage Noise (f = 0.1 Hz to 10 Hz) | - | - | 3 μVPP/V | - | μVPP/V |
| Output Voltage Temperature Drift (High Grade) | - | - | 3 ppm/°C | - | ppm/°C |
| Output Voltage Temperature Drift (Standard Grade) | - | - | 8 ppm/°C | - | ppm/°C |
| Line Regulation | VIN = (VOUT + 0.2 V) to 18 V | - | 0.1 ppm/V | - | ppm/V |
| Load Regulation | -10 mA < ILOAD < 10 mA, VIN = VOUT + 0.75 V | - | 20 ppm/mA | - | ppm/mA |
| Output Current | - | - | ±10 mA | - | mA |
| Temperature Range | - | -40°C | - | 125°C | °C |
| Package Type | - | - | VSSOP-8 | - | - |
Key Features
- Low Temperature Drift: High-grade options offer a maximum temperature drift of 3 ppm/°C, while standard-grade options offer 8 ppm/°C.
- High Accuracy: Initial accuracy of ±0.05% for high-grade and ±0.1% for standard-grade options.
- Low Noise: Output voltage noise as low as 3 μVPP/V in the frequency range of 0.1 Hz to 10 Hz.
- Excellent Long-Term Stability: Long-term stability of 45 ppm after the first 1000 hours.
- High-Output Current: Capable of sourcing and sinking up to ±10 mA.
- Wide Temperature Range: Operates from –40°C to 125°C.
- Excellent Line and Load Regulation: Line regulation of 0.1 ppm/V and load regulation of 20 ppm/mA.
Applications
- Precision Data Acquisition Systems: Ideal for high-precision data acquisition due to its low noise and high accuracy.
- Semiconductor Test Equipment: Used in automated test equipment (ATE) for precise voltage referencing.
- Industrial Process Controls: Suitable for industrial applications requiring stable and accurate voltage references.
- Medical Instrumentation: Used in medical devices where high precision and low noise are critical.
- Pressure and Temperature Transmitters: Employed in transmitters for accurate measurement of pressure and temperature.
- Lab and Field Instrumentation: Ideal for laboratory and field instruments requiring high precision voltage references.
Q & A
- What is the output voltage of the REF5040IDRG4?
The output voltage of the REF5040IDRG4 is 4.096 volts.
- What are the temperature drift specifications for the REF5040IDRG4?
The high-grade option has a maximum temperature drift of 3 ppm/°C, while the standard-grade option has a maximum of 8 ppm/°C.
- What is the noise level of the REF5040IDRG4?
The output voltage noise is as low as 3 μVPP/V in the frequency range of 0.1 Hz to 10 Hz.
- What is the maximum output current of the REF5040IDRG4?
The device can source and sink up to ±10 mA.
- What are the typical applications of the REF5040IDRG4?
Typical applications include precision data acquisition systems, semiconductor test equipment, industrial process controls, medical instrumentation, and pressure and temperature transmitters.
- What is the operating temperature range of the REF5040IDRG4?
The device operates from –40°C to 125°C.
- What package types are available for the REF5040IDRG4?
The REF5040IDRG4 is available in an 8-pin VSSOP package.
- How does the REF5040IDRG4 ensure long-term stability?
The device exhibits long-term stability of 45 ppm after the first 1000 hours.
- What are the line and load regulation specifications of the REF5040IDRG4?
The line regulation is 0.1 ppm/V, and the load regulation is 20 ppm/mA.
- Why is the REF5040IDRG4 suitable for high-precision applications?
The REF5040IDRG4 is suitable due to its low noise, high accuracy, and excellent temperature drift specifications, making it ideal for high-precision data acquisition systems and other critical applications.
