Overview
The REF198ESZ-REEL7 is a precision micropower, low dropout voltage reference 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, including those in automotive and industrial environments. The REF198ESZ-REEL7 is specified over the extended industrial temperature range of −40°C to +85°C, with typical performance specifications up to +125°C.
Key Specifications
| Parameter | Symbol | Condition | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Nominal Output Voltage | VO | - | 4.094 | 4.096 | 4.098 | V |
| Initial Accuracy | - | IOUT = 0 mA | 4.090 | 4.096 | 4.102 | V |
| Temperature Coefficient | TCVO/°C | IOUT = 0 mA | - | 5 ppm/°C | - | - |
| Line Regulation | ΔVO/ΔVIN | 3.0 V ≤ VS ≤ 15 V, IOUT = 0 mA | - | 4 ppm/V | 8 ppm/V | - |
| Load Regulation | ΔVO/ΔILOAD | VS = 5.0 V, 0 mA ≤ IOUT ≤ 30 mA | - | 4 ppm/mA | 10 ppm/mA | - |
| Dropout Voltage | VS − VO | VS = 3.5 V, ILOAD = 10 mA | - | 1.00 V | - | - |
| Supply Current | - | - | - | 45 μA | - | - |
| Sleep Mode Current | - | SLEEP pin low | - | 15 μA | - | - |
Key Features
- Precision Output Voltage: The REF198ESZ-REEL7 provides a precise output voltage of 4.096V with high initial accuracy and low temperature coefficient (5 ppm/°C maximum).
- Low Dropout Voltage: It operates 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 reduces to less than 15 μA in sleep mode.
- High Output Current: Capable of delivering up to 30 mA of output current.
- Extended Temperature Range: Specified over the extended industrial temperature range of −40°C to +85°C, with typical performance up to +125°C.
- Package Options: Available in 8-lead SOIC and TSSOP packages.
Applications
The REF198ESZ-REEL7 is suitable for a variety of applications due to its high accuracy, low power consumption, and robust temperature performance. These include:
- Automotive Systems: For precise voltage referencing in automotive electronics.
- Industrial Control Systems: In applications requiring stable voltage references over a wide temperature range.
- Medical Devices: Where high precision and low power consumption are critical.
- Telecommunications: For reliable voltage referencing in communication equipment.
Q & A
- What is the nominal output voltage of the REF198ESZ-REEL7?
The nominal output voltage is 4.096V.
- What is the temperature coefficient of the REF198ESZ-REEL7?
The temperature coefficient is 5 ppm/°C maximum).
- How much current does the REF198ESZ-REEL7 consume in normal operation?
The device consumes less than 45 μA of supply current).
- What is the sleep mode current of the REF198ESZ-REEL7?
In sleep mode, the supply current is reduced to less than 15 μA).
- What is the maximum output current of the REF198ESZ-REEL7?
The device can deliver up to 30 mA of output current).
- What are the available package options for the REF198ESZ-REEL7?
The device is available in 8-lead SOIC and TSSOP packages).
- What is the operating temperature range of the REF198ESZ-REEL7?
The device is specified over the extended industrial temperature range of −40°C to +85°C, with typical performance up to +125°C).
- What are some typical applications for the REF198ESZ-REEL7?
Typical applications include automotive systems, industrial control systems, medical devices, and telecommunications equipment).
- How does the REF198ESZ-REEL7 achieve its high accuracy?
The device uses a patented temperature drift curvature correction circuit and laser trimming of highly stable, thin-film resistors to achieve high accuracy).
- Is the REF198ESZ-REEL7 suitable for low-voltage applications?
