REF02RC/883C vs VRE310JS
| Part Number |
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| Category | PMIC - Voltage Reference | PMIC - Voltage Reference |
| Manufacturer | Analog Devices Inc. | Apex Microtechnology |
| Description | IC VREF +5V PREC 20CLCC | IC VREF SERIES 0.01% 8SMT |
| Package | Box | Tube |
| Series | - | - |
| Operating Temperature | - | -40°C ~ 85°C (TA) |
| Mounting Type | - | Surface Mount |
| Package / Case | - | 8-SMD, Flat Lead |
| Supplier Device Package | - | 8-SMT |
| Current - Supply | - | 7mA |
| Output Type | - | Fixed |
| Reference Type | - | Series |
| Voltage - Output (Min/Fixed) | - | 10V |
| Voltage - Output (Max) | - | - |
| Current - Output | - | 10 mA |
| Tolerance | - | ±0.01% |
| Temperature Coefficient | - | 0.6ppm/°C |
| Noise - 0.1Hz to 10Hz | - | 6µVp-p |
| Noise - 10Hz to 10kHz | - | - |
| Voltage - Input | - | 13.5V ~ 22V |
| Current - Cathode | - | - |
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1. What is the reference voltage of the ADC?
The reference voltage of the ADC can be the MCU power supply voltage or the stable voltage provided inside the chip.
When the MCU power supply voltage is used as the reference voltage, the reference voltage of the ADC module is the MCU power supply voltage. For example, if the MCU power supply voltage is 5V, then the reference voltage of the ADC is 5V; if the power supply voltage is 3.3V, then the reference voltage of the ADC is 3.3V12. The advantage of this method is that it is simple and easy to implement, but the disadvantage is that the stability of the power supply voltage will affect the measurement accuracy of the ADC. If the power supply voltage is unstable, the reference voltage of the ADC will also change, resulting in inaccurate measurement results. -
2. How to choose a voltage reference?
Voltage references are used in the following situations:
As a reference for measurement: When measuring voltage, the voltage reference provides a stable reference point, making the measurement result more accurate and reliable. When measuring, the negative end of the voltmeter is grounded and the positive end is connected to the measured point, so that the measured value is the voltage value of the measured point.
Adjust and calibrate other circuit elements: The reference voltage can be used to adjust and calibrate other circuit elements to improve the performance of the entire system. By comparing with the reference voltage, various parameters in the circuit can be accurately adjusted to ensure the stability and accuracy of the system.
Setting thresholds and judgments: In comparison circuits, reference voltages are used to set thresholds and make judgments. By comparing with the reference voltage, the rationality of various states and signals in the circuit can be determined.
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3. What is a shunt voltage reference IC?
A shunt voltage reference IC is a chip used to measure the potential of each point in a circuit, mainly used to determine the reference potential of the circuit. It converts a DC power supply or battery-powered AC power into a low-voltage differential voltage signal output through a resistor, and then converts it into a digital quantity by an AD conversion circuit. It is widely used in various measuring instruments, meters and control systems.
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4. What is a reference voltage IC?
A reference voltage IC is a voltage reference IC. A voltage reference IC is a precise, temperature-compensated voltage source that can provide a specific output voltage value, such as 1.225V, 4.096V or 10.000V. They are mainly used to provide a stable and precise voltage reference in various electronic systems to ensure the stability and reliability of the system.
There are two main types of voltage reference ICs: shunt voltage reference ICs and series voltage reference ICs. The shunt voltage reference IC uses an external series resistor to set the maximum current supplied to the load. It is suitable for situations where the load is almost constant and the power supply changes very little. The series voltage reference IC contains a voltage reference and an amplifier that controls the output voltage. It is suitable for situations where the load current is variable and the output voltage changes strictly when the temperature changes.
