Overview
The REF102AU/2K5, produced by Texas Instruments, is a precision 10V voltage reference IC known for its high accuracy and stability. This component is designed to provide a stable voltage output with minimal drift over temperature, making it ideal for demanding instrumentation and system reference applications. The REF102AU/2K5 operates without a heater, resulting in low power consumption, fast warm-up times, and excellent stability.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Output Voltage | TA = 25°C | 9.9975 | 10.0000 | 10.0025 | V |
| Drift vs Temperature | -25°C to +85°C | 5 | 2.5 | ppm/°C | |
| Line Regulation | VS = 11.4V to 36V | 1 | 1 | ppm/V | |
| Load Regulation | IL = 0mA to +10mA | 10 | 10 | ppm/mA | |
| Noise (0.1Hz to 10Hz) | 5 | µVPP | |||
| Input Voltage Range | 11.4 | 36 | V | ||
| Quiescent Current | IOUT = 0 | 1.4 | mA | ||
| Warm-Up Time | To 0.1% | 15 | µs | ||
| Operating Temperature | -25 | 85 | °C |
Key Features
- Precision Output Voltage: ±0.0025V initial accuracy and ±2.5ppm/°C maximum drift over the industrial temperature range.
- Low Noise: 5µVPP typical noise from 0.1Hz to 10Hz.
- Excellent Stability: 5ppm/1000hr typical stability.
- Wide Supply Range: Operates from 11.4V to 36V.
- Low Quiescent Current: Maximum of 1.4mA.
- Fast Warm-Up Time: 15µs to 0.1% of the final value.
- External Adjustability: Output voltage can be externally adjusted with minimal effect on drift and stability.
- Noise Reduction Capability: High-frequency noise can be reduced using a capacitor connected to the Noise Reduction pin.
Applications
The REF102AU/2K5 is ideal for various precision voltage reference applications, including:
- Instrumentation: Precision measurement instruments, data acquisition systems, and test equipment.
- System References: High-reliability systems requiring stable voltage references.
- Strain Gauge Conditioners: Precision voltage references for strain gauge bridges.
- Current Sources: Precision current sources and sinks.
- Stacked References: Can be stacked to obtain voltages in multiples of 10V.
Q & A
- What is the output voltage accuracy of the REF102AU/2K5?
The output voltage accuracy is ±0.0025V at 25°C.
- What is the maximum drift over temperature for the REF102AU/2K5?
The maximum drift is 2.5ppm/°C over the industrial temperature range.
- What is the typical noise level of the REF102AU/2K5?
The typical noise level is 5µVPP from 0.1Hz to 10Hz.
- What is the operating temperature range of the REF102AU/2K5?
The operating temperature range is -25°C to +85°C.
- Can the output voltage of the REF102AU/2K5 be externally adjusted?
Yes, the output voltage can be externally adjusted with minimal effect on drift and stability.
- How can the high-frequency noise of the REF102AU/2K5 be reduced?
High-frequency noise can be reduced by connecting a capacitor between the Noise Reduction pin and ground.
- What is the quiescent current of the REF102AU/2K5?
The maximum quiescent current is 1.4mA.
- What is the warm-up time of the REF102AU/2K5?
The warm-up time to 0.1% of the final value is 15µs.
- Can multiple REF102AU/2K5 devices be stacked to achieve higher voltages?
Yes, multiple devices can be stacked to obtain voltages in multiples of 10V.
- What are some common applications of the REF102AU/2K5?
Common applications include instrumentation, system references, strain gauge conditioners, and precision current sources.
