Overview
The REF192GS, produced by Analog Devices Inc., is a 2.5V precision micropower, low dropout voltage (LDV) reference. This device is part of the REF19x series, which utilizes a patented temperature drift curvature correction circuit and laser trimming of highly stable, thin-film resistors to achieve high initial accuracy and a very low temperature coefficient. The REF192GS is designed to provide stable output voltage from supplies as low as 100 mV above the output voltage, making it suitable for a variety of applications requiring precise voltage referencing.
Key Specifications
| Parameter | Condition | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Initial Accuracy | IOUT = 0 mA | 2.498 | 2.500 | 2.502 | V (E Grade) |
| 2.495 | 2.505 | V (F Grade) | |||
| 2.490 | 2.510 | V (G Grade) | |||
| Temperature Coefficient | IOUT = 0 mA | 10 ppm/°C (G Grade) | |||
| Line Regulation | 3.0 V ≤ VS ≤ 15 V, IOUT = 0 mA | 4 ppm/V (E Grade), 8 ppm/V (F and G Grades) | |||
| Load Regulation | VS = 5.0 V, 0 mA ≤ IOUT ≤ 30 mA | 4 ppm/mA (E Grade), 10 ppm/mA (F and G Grades) | |||
| Dropout Voltage | VS = 3.5 V, ILOAD = 10 mA | 1.00 V | |||
| Supply Current | No load | 45 μA | |||
| Supply Current in Sleep Mode | No load | 15 μA | |||
| Noise Voltage (0.1 Hz to 10 Hz) | 25 μV p-p | ||||
| Package | 8-SOIC (0.154", 3.90mm Width) |
Key Features
- Precision Voltage Reference: The REF192GS offers high initial accuracy with a maximum deviation of ±2 mV and a low temperature coefficient of 10 ppm/°C (G Grade), ensuring stable output voltage across a wide temperature range.
- Low Dropout Voltage: The device can operate with supplies as low as 100 mV above the output voltage, making it suitable for low-voltage applications.
- Low Supply Current: It consumes less than 45 μA of supply current and reduces to less than 15 μA in sleep mode, which is enabled by a low TTL or CMOS level on the SLEEP pin.
- Stable Output: Provides stable output voltage over a wide range of input voltages (3 V to 15 V) and load currents (up to 30 mA).
- Low Noise: Features low noise voltage of 25 μV p-p in the 0.1 Hz to 10 Hz frequency range.
- Extended Temperature Range: Specified over the extended industrial temperature range of −40°C to +85°C, with typical performance specifications up to +125°C.
Applications
- Automotive Systems: Suitable for automotive applications due to its extended temperature range and high reliability.
- Industrial Control Systems: Used in industrial control systems where precise voltage referencing is critical.
- Medical Devices: Applicable in medical devices requiring stable and accurate voltage references.
- Consumer Electronics: Can be used in various consumer electronics where low power consumption and high accuracy are required.
Q & A
- What is the output voltage of the REF192GS?
The output voltage of the REF192GS is 2.5V.
- What is the initial accuracy of the REF192GS?
The initial accuracy is ±2 mV max for the E Grade, ±5 mV for the F Grade, and ±10 mV for the G Grade.
- What is the temperature coefficient of the REF192GS?
The temperature coefficient is 10 ppm/°C for the G Grade.
- What is the supply current of the REF192GS?
The supply current is less than 45 μA, and it reduces to less than 15 μA in sleep mode.
- What is the dropout voltage of the REF192GS?
The dropout voltage is 1.00 V at VS = 3.5 V and ILOAD = 10 mA.
- What is the noise voltage of the REF192GS?
The noise voltage is 25 μV p-p in the 0.1 Hz to 10 Hz frequency range.
- What is the package type of the REF192GS?
The package type is 8-SOIC (0.154", 3.90mm Width).
- What is the operating temperature range of the REF192GS?
The device is specified over the extended industrial temperature range of −40°C to +85°C, with typical performance up to +125°C.
- How do you enable sleep mode on the REF192GS?
Sleep mode is enabled by applying a low TTL or CMOS level to the SLEEP pin.
- What is the maximum load current of the REF192GS?
The maximum load current is 30 mA.
