Overview
The REF198GSZ-REEL, produced by Analog Devices Inc., is a precision micropower, low dropout voltage reference from the REF19x series. This device is designed to provide a highly stable output voltage with minimal temperature drift, making it suitable for a wide range of applications. The REF198GSZ-REEL utilizes a patented temperature drift curvature correction circuit and laser trimming of highly stable, thin-film resistors to achieve high initial accuracy and a low temperature coefficient.
The device operates with a low supply current of 45 μA and features a sleep mode that reduces the supply current to less than 15 μA. It is available in an 8-lead SOIC package and is specified over the extended industrial temperature range of −40°C to +85°C, with performance specifications extending up to +125°C for certain applications.
Key Specifications
| Parameter | Condition | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Initial Accuracy | IOUT = 0 mA | 4.094 | 4.096 | 4.098 | V |
| Temperature Coefficient | IOUT = 0 mA | 2 | - | 5 | ppm/°C |
| Supply Current | No load | - | - | 45 | μA |
| Sleep Mode Supply Current | No load | - | - | 15 | μA |
| Line Regulation | 3.3 V ≤ VS ≤ 15 V, IOUT = 0 mA | 2 | - | 4 | ppm/V |
| Load Regulation | VS = 5.0 V, 0 mA ≤ IOUT ≤ 30 mA | 4 | - | 10 | ppm/mA |
| Dropout Voltage | VS = 3.5 V, ILOAD = 10 mA | - | - | 1.00 | V |
| Output Current | - | - | - | 30 | mA |
| Operating Temperature Range | - | -40 | - | 85 | °C |
Key Features
- Precision Output Voltage: The REF198GSZ-REEL provides a highly stable output voltage with an initial accuracy of ±2 mV and a temperature coefficient of up to 5 ppm/°C.
- Low Supply Current: The device operates with a low supply current of 45 μA and features a sleep mode that reduces the supply current to less than 15 μA.
- Low Dropout Voltage: It can maintain a stable output voltage from supplies as low as 100 mV above the output voltage.
- High Output Current: Capable of delivering up to 30 mA of output current.
- Short-Circuit Protection: Includes built-in short-circuit protection to ensure device reliability.
- Extended Temperature Range: Specified over the extended industrial temperature range of −40°C to +85°C, with performance specifications extending up to +125°C for certain applications.
Applications
- Portable Instruments: Ideal for battery-powered devices where low power consumption is critical.
- ADCs and DACs: Used in analog-to-digital and digital-to-analog converters for precise voltage referencing.
- Smart Sensors: Suitable for smart sensor applications requiring stable and accurate voltage references.
- Solar Powered Applications: Applicable in solar-powered systems where low power consumption and high accuracy are necessary.
- Loop-Current-Powered Instruments: Used in instruments powered by loop currents, such as in process control systems.
- Automotive Applications: Can be used in automotive systems due to its extended temperature range and high reliability.
Q & A
- What is the initial accuracy of the REF198GSZ-REEL?
The initial accuracy of the REF198GSZ-REEL is ±2 mV.
- What is the maximum supply current of the REF198GSZ-REEL?
The maximum supply current is 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 temperature coefficient of the REF198GSZ-REEL?
The temperature coefficient is up to 5 ppm/°C.
- What is the maximum output current of the REF198GSZ-REEL?
The maximum output current is 30 mA.
- What is the operating temperature range of the REF198GSZ-REEL?
The operating temperature range is −40°C to +85°C, with performance specifications extending up to +125°C for certain applications.
- What type of package is the REF198GSZ-REEL available in?
The REF198GSZ-REEL is available in an 8-lead SOIC package.
- Does the REF198GSZ-REEL have short-circuit protection?
Yes, the device includes built-in short-circuit protection.
- What are some typical applications of the REF198GSZ-REEL?
Typical applications include portable instruments, ADCs and DACs, smart sensors, solar-powered applications, and loop-current-powered instruments.
- Is the REF198GSZ-REEL suitable for automotive applications?
Yes, it is suitable for automotive applications due to its extended temperature range and high reliability.
