Overview
The REF191GS-REEL, produced by Analog Devices Inc., is a precision micropower voltage reference from the REF19x series. This device is designed to provide a highly accurate and stable output voltage of 2.048V. It features a patented temperature drift curvature correction circuit and laser trimming of highly stable, thin-film resistors, ensuring a very low temperature coefficient and high initial accuracy. The REF191GS-REEL is suitable for applications requiring low power consumption, low dropout voltage, and high precision over a wide temperature range.
Key Specifications
| Parameter | Condition | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Output Voltage | IOUT = 0 mA | 2.046 | 2.048 | 2.050 | V |
| Initial Accuracy | IOUT = 0 mA | - | - | ±2 mV | - |
| Temperature Coefficient | - | - | - | 25 ppm/°C | - |
| Supply Current | No load | - | - | 45 μA | - |
| Sleep Mode Current | No load | - | - | 15 μA | - |
| Output Current | - | - | - | 30 mA | - |
| Line Regulation | 3.0 V ≤ VS ≤ 15 V, IOUT = 0 mA | - | - | 4 ppm/V | - |
| Load Regulation | VS = 5.0 V, 0 mA ≤ IOUT ≤ 25 mA | - | - | 4 ppm/mA | - |
| Dropout Voltage | VS = 3.8 V, ILOAD = 10 mA | - | - | 0.80 V | - |
| Operating Temperature | - | -40°C | - | 85°C | - |
| Package | - | - | - | 8-Lead SOIC | - |
Key Features
- High Accuracy: Initial accuracy of ±2 mV maximum and a temperature coefficient of 25 ppm/°C.
- Low Power Consumption: Supply current of 45 μA maximum and sleep mode current of 15 μA maximum.
- Low Dropout Voltage: Stable output voltage from supplies as low as 100 mV above the output voltage.
- High Output Current: Capable of delivering up to 30 mA of output current.
- Low Noise: Excellent low-frequency noise characteristics with noise levels of 20 µVp-p from 0.1 Hz to 10 Hz.
- Wide Input Voltage Range: Operates with input voltages from 3 V to 15 V.
- Robust Operation: Specified over the extended industrial temperature range of -40°C to +85°C.
- Surface Mount Package: Available in an 8-lead SOIC package.
Applications
- Portable Instruments: Ideal for battery-powered devices due to its low power consumption.
- ADCs and DACs: Used in analog-to-digital and digital-to-analog converters for precise voltage referencing.
- Smart Sensors: Suitable for smart sensor applications requiring high accuracy and low power.
- Solar Powered Applications: Appropriate for solar-powered systems where low power consumption is crucial.
- Loop-Current-Powered Instruments: Used in instruments powered by loop currents, such as in industrial automation.
- Automotive Applications: Specified for use in automotive environments with a temperature range of -40°C to +125°C.
Q & A
- What is the output voltage of the REF191GS-REEL?
The output voltage of the REF191GS-REEL is 2.048V.
- What is the initial accuracy of the REF191GS-REEL?
The initial accuracy is ±2 mV maximum.
- What is the temperature coefficient of the REF191GS-REEL?
The temperature coefficient is 25 ppm/°C.
- How much current does the REF191GS-REEL consume in normal operation?
The supply current is 45 μA maximum.
- What is the sleep mode current of the REF191GS-REEL?
The sleep mode current is 15 μA maximum.
- What is the maximum output current of the REF191GS-REEL?
The maximum output current is 30 mA.
- What is the operating temperature range of the REF191GS-REEL?
The operating temperature range is -40°C to +85°C.
- In what package is the REF191GS-REEL available?
The REF191GS-REEL is available in an 8-lead SOIC package.
- What are some typical applications of the REF191GS-REEL?
Typical applications include portable instruments, ADCs and DACs, smart sensors, solar-powered applications, and loop-current-powered instruments.
- Is the REF191GS-REEL RoHS compliant?
Yes, the REF191GS-REEL is lead-free and RoHS compliant.
