Overview
The REF192ES-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 operates with a supply current of less than 45 μA and can be put into a sleep mode, reducing the supply current to less than 15 μA. It is specified over an extended industrial temperature range of −40°C to +85°C, making it suitable for various applications including automotive and industrial environments.
Key Specifications
| Parameter | Symbol | Condition | Min | |||
|---|---|---|---|---|---|---|
| Initial Accuracy | VO | E Grade, IOUT = 0 mA | 2.498 | 2.500 | 2.502 | V |
| Line Regulation | ΔVO/ΔVIN | E Grade, 3.0 V ≤ VS ≤ 15 V, IOUT = 0 mA | 2 | 4 | ppm/V | |
| Load Regulation | ΔVO/ΔVLOAD | E Grade, VS = 5.0 V, 0 mA ≤ IOUT ≤ 30 mA | 4 | 10 | ppm/mA | |
| Dropout Voltage | VS - VO | VS = 3.5 V, ILOAD = 10 mA | 1.00 | 1.40 | V | |
| Supply Current | No load | 45 | μA | |||
| Supply Current in Sleep Mode | No load | 15 | μA | |||
| Temperature Coefficient | TCVO/°C | E Grade, IOUT = 0 mA | 2 | ppm/°C |
Key Features
- Precision Voltage Reference: High initial accuracy with ±2 mV maximum for the E grade.
- Low Supply Current: Consumes less than 45 μA of supply current and less than 15 μA in sleep mode.
- Low Dropout Voltage: Operates with a dropout voltage as low as 1.00 V at 10 mA load current.
- High Stability: Utilizes a patented temperature drift curvature correction circuit and laser trimming of thin-film resistors for low temperature coefficient.
- Extended Temperature Range: Specified over −40°C to +85°C, with typical performance up to +125°C.
- Short-Circuit Protection: Built-in protection against short circuits.
- Package Options: Available in 8-lead SOIC, PDIP, and TSSOP packages.
Applications
- Portable Instruments: Ideal for battery-powered devices due to low power consumption.
- ADCs and DACs: Provides stable reference voltage for analog-to-digital and digital-to-analog converters.
- Smart Sensors: Suitable for sensor applications requiring high accuracy and low power.
- Solar Powered Applications: Efficient operation makes it suitable for solar-powered systems.
- Loop-Current-Powered Instruments: Can be used in instruments powered by loop currents.
- Automotive: Meets the extended temperature range requirements for automotive applications.
Q & A
- What is the typical supply current of the REF192ES-REEL7?
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 initial accuracy of the REF192ES-REEL7 for the E grade?
The initial accuracy for the E grade is ±2 mV maximum.
- What is the temperature range for the REF192ES-REEL7?
The device is specified over an extended industrial temperature range of −40°C to +85°C.
- What is the dropout voltage at 10 mA load current?
The dropout voltage at 10 mA load current is 1.00 V.
- Does the REF192ES-REEL7 have short-circuit protection?
- What are the available package options for the REF192ES-REEL7?
- Is the REF192ES-REEL7 suitable for automotive applications?
- What is the typical line regulation of the REF192ES-REEL7?
- What is the load regulation of the REF192ES-REEL7?
