Overview
The REF195GSZ-REEL, part of the REF19x series from Analog Devices, is a precision band gap voltage reference known for its high accuracy and low power consumption. These micropower, low dropout voltage (LDV) devices provide stable output voltage from supplies as low as 100 mV above the output voltage, making them ideal for various applications requiring precise voltage referencing.
Key Specifications
| Parameter | Symbol | Condition | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Initial Accuracy | VO | IOUT = 0 mA | 2.495 | 2.500 | 2.505 | V |
| Line Regulation | ΔVO/ΔVIN | 3.0 V ≤ VS ≤ 15 V, IOUT = 0 mA | 2 | 4 | 8 | ppm/V |
| Load Regulation | ΔVO/ΔILOAD | 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 | |
| Temperature Coefficient | TCVO/°C | IOUT = 0 mA | 2 | 5 | 10 | ppm/°C |
| Supply Current | IS | No load | 45 | μA | ||
| Sleep Mode Supply Current | IS | No load | 15 | μA | ||
| Package | 8-Lead SOIC | |||||
| Temperature Range | -40°C | +85°C |
Key Features
- High Initial Accuracy: ±2 mV maximum for the E grade, ensuring precise voltage referencing.
- Low Temperature Coefficient: 5 ppm/°C maximum, providing stable output over a wide temperature range.
- Low Dropout Voltage: Operates with supplies as low as 100 mV above the output voltage.
- Low Power Consumption: Supply current of less than 45 μA and sleep mode current of less than 15 μA.
- High Output Current: Capable of delivering up to 30 mA of output current.
- Sleep Mode: Reduces supply current by applying a low TTL or CMOS level to the SLEEP pin.
- Short-Circuit Protection: Built-in protection against short-circuit conditions.
Applications
- Portable Instruments: Ideal for battery-powered devices due to low power consumption.
- ADCs and DACs: Provides stable reference voltages 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 Applications: Specified over the extended industrial temperature range, making it suitable for automotive use.
Q & A
- What is the initial accuracy of the REF195GSZ-REEL? The initial accuracy is ±2 mV maximum for the E grade.
- What is the temperature coefficient of the REF195GSZ-REEL? The temperature coefficient is 5 ppm/°C maximum.
- How low can the supply voltage be for the REF195GSZ-REEL? The supply voltage can be as low as 100 mV above the output voltage.
- What is the maximum output current of the REF195GSZ-REEL? The maximum output current is 30 mA.
- How does the sleep mode work in the REF195GSZ-REEL? Sleep mode is enabled by applying a low TTL or CMOS level to the SLEEP pin, reducing the supply current to less than 15 μA.
- What is the package type of the REF195GSZ-REEL? The package type is an 8-Lead SOIC.
- What is the operating temperature range of the REF195GSZ-REEL? The operating temperature range is -40°C to +85°C.
- Is the REF195GSZ-REEL suitable for automotive applications? Yes, it is specified over the extended industrial temperature range, making it suitable for automotive use.
- Does the REF195GSZ-REEL have short-circuit protection? Yes, it has built-in short-circuit protection.
- What is the typical supply current of the REF195GSZ-REEL in normal operation? The typical supply current is less than 45 μA.
