Overview
The REF192GS-REEL7 is a precision micropower, low dropout voltage reference from Analog Devices Inc. It is part of the REF19x series, which utilizes a patented temperature drift curvature correction circuit and laser trimming of highly stable, thin-film resistors. This design ensures a very low temperature coefficient and high initial accuracy. The device is optimized for low power consumption, making it suitable for a variety of applications requiring stable voltage references.
Key Specifications
| Parameter | Symbol | Condition | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Initial Accuracy | VO | E Grade, IOUT = 0 mA | 2.498 | 2.500 | 2.502 | V |
| Temperature Coefficient | TCVO/°C | E Grade, IOUT = 0 mA | 2 | 5 | 10 | ppm/°C |
| Line Regulation | ΔVO/ΔVIN | E Grade, 3.0 V ≤ VS ≤ 15 V, IOUT = 0 mA | 2 | 4 | 8 | ppm/V |
| Load Regulation | ΔVO/ΔVLOAD | E Grade, VS = 5.0 V, 0 mA ≤ IOUT ≤ 30 mA | 4 | 10 | 15 | ppm/mA |
| Dropout Voltage | VS - VO | VS = 3.5 V, ILOAD = 10 mA | 1.00 | 1.40 | V | |
| Supply Current | No load | 45 | 45 | μA | ||
| Supply Current in Sleep Mode | No load | 15 | 15 | μA | ||
| Output Current | 30 | mA | ||||
| Operating Temperature Range | -40 | 85 | °C | |||
| Package Type | 8-Lead SOIC |
Key Features
- Precision Voltage Reference: High initial accuracy with a maximum deviation of ±2 mV.
- Low Power Consumption: Maximum supply current of 45 μA and 15 μA in sleep mode.
- Low Dropout Voltage: Stable output voltage from supplies as low as 100 mV above the output voltage.
- Temperature Stability: Low temperature coefficient of 5 ppm/°C maximum.
- Line and Load Regulation: Excellent line and load regulation with minimal output voltage variation.
- Short-Circuit Protection: Built-in protection against short circuits.
- Extended Temperature Range: Specified over -40°C to +85°C with typical performance up to +125°C.
Applications
- Portable Instruments: Ideal for battery-powered devices requiring stable voltage references.
- ADCs and DACs: Used in analog-to-digital and digital-to-analog converters for precise voltage referencing.
- Smart Sensors: Suitable for sensor applications requiring low power and high accuracy.
- Solar Powered Applications: Efficient for use in solar-powered systems due to low power consumption.
- Loop-Current-Powered Instruments: Applicable in instruments powered by loop currents.
- Automotive Applications: Can be used in automotive systems due to its extended temperature range and robust specifications.
Q & A
- What is the initial accuracy of the REF192GS-REEL7?
The initial accuracy is ±2 mV maximum.
- What is the maximum supply current of the REF192GS-REEL7?
The maximum supply current is 45 μA.
- How does the sleep mode affect the supply current?
In sleep mode, the supply current is reduced to less than 15 μA.
- What is the temperature coefficient of the REF192GS-REEL7?
The temperature coefficient is 5 ppm/°C maximum.
- What is the dropout voltage of the REF192GS-REEL7?
The dropout voltage is 1.00 V at VS = 3.5 V and ILOAD = 10 mA.
- What is the operating temperature range of the REF192GS-REEL7?
The operating temperature range is -40°C to +85°C.
- What package type is the REF192GS-REEL7 available in?
The REF192GS-REEL7 is available in an 8-Lead SOIC package.
- What are some typical applications of the REF192GS-REEL7?
Typical applications include portable instruments, ADCs and DACs, smart sensors, solar powered applications, and loop-current-powered instruments.
- Does the REF192GS-REEL7 have built-in short-circuit protection?
Yes, the REF192GS-REEL7 has built-in short-circuit protection.
- What is the recommended capacitor value for proper operation?
A 1 μF capacitor is required between the output pin and the GND pin for proper operation.
