Overview
The REF198GS-REEL from Analog Devices Inc. is part of the REF19x series of precision band gap voltage references. These devices are designed to provide high accuracy and stability, utilizing a patented temperature drift curvature correction circuit and laser trimming of highly stable, thin-film resistors. This results in a very low temperature coefficient and high initial accuracy. The REF198GS-REEL is a micropower, low dropout voltage (LDV) device, capable of operating from supplies as low as 100 mV above the output voltage and consuming less than 45 μA of supply current. It also features a sleep mode that reduces the supply current to less than 15 μA when enabled by a low TTL or CMOS level on the SLEEP pin.
Key Specifications
| Parameter | Symbol | Condition | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Output Voltage | VO | IOUT = 0 mA | 2.046 | 2.048 | 2.050 | V |
| Initial Accuracy | - | - | - | - | ±2 mV | - |
| Supply Current | - | No load | - | - | 45 μA | - |
| Sleep Mode Supply Current | - | No load | - | - | 15 μA | - |
| Line Regulation | ΔVO/ΔVIN | 3.0 V ≤ VS ≤ 15 V, IOUT = 0 mA | - | - | 4 ppm/V | - |
| Load Regulation | ΔVO/ΔILOAD | VS = 5.0 V, 0 mA ≤ IOUT ≤ 25 mA | - | - | 4 ppm/mA | - |
| Temperature Coefficient | TCVO | - | - | - | 10-25 ppm/°C | - |
| Operating Temperature Range | - | - | -40°C | - | +85°C | - |
| Package Type | - | - | - | - | 8-Lead SOIC | - |
Key Features
- Precision band gap voltage reference with patented temperature drift curvature correction circuit and laser trimming of highly stable, thin-film resistors.
- Micropower operation with supply current less than 45 μA and sleep mode current less than 15 μA.
- Low dropout voltage, allowing operation from supplies as low as 100 mV above the output voltage.
- High output current capability of up to 30 mA.
- Short-circuit protection and high accuracy with initial accuracy of ±2 mV.
- Line and load regulation of 4 ppm/V and 4 ppm/mA, respectively.
- Operating temperature range of −40°C to +85°C with typical performance specifications up to +125°C.
Applications
- Portable instruments.
- ADCs and DACs.
- Smart sensors.
- Solar powered applications.
- Loop-current-powered instruments.
- Automotive applications due to its extended industrial temperature range.
Q & A
- What is the output voltage of the REF198GS-REEL?
The output voltage of the REF198GS-REEL is 4.096V.
- What is the typical supply current of the REF198GS-REEL?
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 operating temperature range of the REF198GS-REEL?
The operating temperature range is −40°C to +85°C, with typical performance specifications up to +125°C.
- What is the package type of the REF198GS-REEL?
The package type is an 8-Lead SOIC.
- What is the initial accuracy of the REF198GS-REEL?
The initial accuracy is ±2 mV.
- What are the line and load regulation specifications?
The line regulation is 4 ppm/V, and the load regulation is 4 ppm/mA.
- Does the REF198GS-REEL have short-circuit protection?
Yes, it does have short-circuit protection.
- What are some common applications of the REF198GS-REEL?
Common applications include portable instruments, ADCs and DACs, smart sensors, solar powered applications, and loop-current-powered instruments.
- How does the REF198GS-REEL achieve high accuracy?
The REF198GS-REEL achieves high accuracy through a patented temperature drift curvature correction circuit and laser trimming of highly stable, thin-film resistors.
