Overview
The REF192GP, produced by Analog Devices Inc., is a precision micropower, low dropout voltage (LDV) reference device. 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 to achieve a very low temperature coefficient and high initial accuracy. This device is designed to provide a stable output voltage of 2.5V and is suitable for a wide range of applications requiring precise voltage referencing.
Key Specifications
| Parameter | Symbol | Condition | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Initial Accuracy | VO | E Grade, IOUT = 0 mA | 2.498 | 2.500 | 2.502 | V |
| F Grade, IOUT = 0 mA | 2.495 | 2.505 | V | |||
| G Grade, IOUT = 0 mA | 2.490 | 2.510 | V | |||
| Line Regulation | ΔVO/ΔVIN | E Grade, 3.0 V ≤ VS ≤ 15 V, IOUT = 0 mA | 2 | 4 | ppm/V | |
| F and G Grades, 3.0 V ≤ VS ≤ 15 V, IOUT = 0 mA | 4 | 8 | ppm/V | |||
| Load Regulation | ΔVO/ΔILOAD | E Grade, VS = 5.0 V, 0 mA ≤ IOUT ≤ 30 mA | 4 | 10 | ppm/mA | |
| F and G Grades, VS = 5.0 V, 0 mA ≤ IOUT ≤ 30 mA | 6 | 15 | ppm/mA | |||
| Dropout Voltage | VS - VO | VS = 3.5 V, ILOAD = 10 mA | 1.00 | V | ||
| VS = 3.9 V, ILOAD = 30 mA | 1.40 | V | ||||
| Long-term Stability | DVO | 1000 hours @ 125°C | 1.2 | mV | ||
| Noise Voltage | eN | 0.1 Hz to 10 Hz | 25 | μV p-p | ||
| Supply Current | No load | 45 | μA | |||
| Sleep Mode, No load | 15 | μA |
Key Features
- Precision Voltage Reference: Provides a stable output voltage of 2.5V with high initial accuracy and low temperature coefficient.
- Micropower and Low Dropout Voltage: Operates with supply voltages as low as 100 mV above the output voltage and consumes less than 45 μA of supply current.
- Sleep Mode: Reduces supply current to less than 15 μA when enabled by a low TTL or CMOS level on the SLEEP pin.
- High Output Current: Capable of delivering up to 30 mA of output current.
- Low Noise and Long-term Stability: Features low noise voltage and high long-term stability, making it suitable for precise applications.
- Short-circuit Protection: Includes built-in protection against short circuits.
- Extended Industrial Temperature Range: Specified over −40°C to +85°C with typical performance specifications 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 stable and accurate voltage references.
- Solar Powered Applications: Appropriate for systems powered by solar energy due to its low power consumption.
- Loop-current-powered Instruments: Used in instruments powered by loop currents, such as those in industrial control systems.
- Automotive Applications: Specified for use in automotive environments due to its extended temperature range and reliability.
Q & A
- What is the output voltage of the REF192GP?
The output voltage of the REF192GP is 2.5V.
- What is the typical supply current of the REF192GP?
The typical supply current is less than 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 maximum output current of the REF192GP?
The maximum output current is 30 mA.
- What is the temperature range for the REF192GP?
The device is specified over −40°C to +85°C with typical performance up to +125°C.
- What kind of protection does the REF192GP have?
The REF192GP includes built-in short-circuit protection.
- What packages are available for the REF192GP?
The device is available in 8-lead SOIC, PDIP, and TSSOP packages.
- What is the line regulation of the REF192GP?
The line regulation is 2-4 ppm/V for the E grade and 4-8 ppm/V for the F and G grades.
- What is the load regulation of the REF192GP?
The load regulation is 4-10 ppm/mA for the E grade and 6-15 ppm/mA for the F and G grades.
- Is a capacitor required for proper operation?
