Overview
The REF198ESZ is a precision micropower, low dropout voltage (LDV) reference device from Analog Devices Inc. It is part of the REF19x series, which is known for its high accuracy and stability. This device provides a stable output voltage from supplies as low as 100 mV above the output voltage, making it suitable for a wide range of applications. The REF198ESZ is particularly noted for its low power consumption, with a supply current of less than 45 μA and a sleep mode current of less than 15 μA.
Key Specifications
| Parameter | Symbol | Condition | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Initial Accuracy | VO | IOUT = 0 mA | 2.498 | 2.500 | 2.502 | V |
| Line Regulation | ΔVO/ΔVIN | 3.0 V ≤ VS ≤ 15 V, IOUT = 0 mA | 2 | - | 4 ppm/V | - |
| Load Regulation | ΔVO/ΔILOAD | 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 | - | - | V |
| Temperature Coefficient | TCVO/°C | IOUT = 0 mA | - | - | 5 ppm/°C | - |
| Supply Current | ISUPPLY | - | - | 45 μA | - | μA |
| Sleep Mode Current | ISLEEP | - | - | 15 μA | - | μA |
| Output Current | IOUT | - | - | 30 mA | - | mA |
| Operating Temperature Range | TA | - | -40°C | - | +125°C | °C |
Key Features
- Precision Output Voltage: The REF198ESZ offers a highly accurate output voltage with an initial accuracy of ±2 mV maximum.
- Low Dropout Voltage: It can operate with supplies as low as 100 mV above the output voltage, making it suitable for low-voltage applications.
- Low Power Consumption: The device consumes less than 45 μA of supply current and less than 15 μA in sleep mode.
- High Output Current: It can provide up to 30 mA of output current.
- Temperature Stability: The REF198ESZ features a low temperature coefficient of 5 ppm/°C maximum, ensuring stable performance over a wide temperature range.
- Extended Industrial Temperature Range: The device is specified over the extended industrial temperature range of −40°C to +125°C.
Applications
- Automotive Systems: Due to its extended industrial temperature range and high reliability, it is suitable for automotive applications.
- Industrial Control Systems: The REF198ESZ can be used in various industrial control systems requiring stable and accurate voltage references.
- Medical Devices: Its precision and low power consumption make it a good fit for medical devices that require reliable voltage references.
- Consumer Electronics: It can be used in consumer electronics where low power consumption and high accuracy are crucial.
Q & A
- What is the initial accuracy of the REF198ESZ?
The initial accuracy of the REF198ESZ is ±2 mV maximum.
- What is the minimum supply voltage required for the REF198ESZ?
The REF198ESZ can operate with supplies as low as 100 mV above the output voltage.
- How much current does the REF198ESZ consume in normal operation?
The device consumes less than 45 μA of supply current in normal operation.
- What is the sleep mode current of the REF198ESZ?
In sleep mode, the supply current is reduced to less than 15 μA.
- What is the maximum output current of the REF198ESZ?
The REF198ESZ can provide up to 30 mA of output current.
- What is the temperature coefficient of the REF198ESZ?
The temperature coefficient of the REF198ESZ is 5 ppm/°C maximum.
- What is the operating temperature range of the REF198ESZ?
The device is specified over the extended industrial temperature range of −40°C to +125°C.
- In what packages is the REF198ESZ available?
The REF198ESZ is available in 8-lead SOIC and TSSOP packages.
- Is the REF198ESZ suitable for automotive applications?
Yes, the REF198ESZ is suitable for automotive applications due to its extended industrial temperature range and high reliability.
- What are some common applications of the REF198ESZ?
The REF198ESZ is commonly used in automotive systems, industrial control systems, medical devices, and consumer electronics.
