Overview
The REF191GSZ-REEL is a precision band gap voltage reference from Analog Devices Inc. This device is part of the REF19x series, which utilizes a patented temperature drift curvature correction circuit and laser trimming of highly stable, thin-film resistors. This technology ensures a very low temperature coefficient and high initial accuracy. The REF191GSZ-REEL is designed to provide a stable output voltage of 2.048V, making it suitable for a variety of applications requiring precise voltage referencing.
Key Specifications
| Parameter | Value |
|---|---|
| Reference Type | Series Precision |
| Voltage - Output | 2.048V |
| Tolerance | ±2mV (initial accuracy) |
| Temperature Coefficient | 5ppm/°C (maximum) |
| Voltage - Input | 2.3 V ~ 15 V |
| Number of Channels | 1 |
| Current - Quiescent | < 45μA (normal), < 15μA (sleep mode) |
| Current - Output | 30mA |
| Operating Temperature | -40°C ~ 85°C |
| Mounting Type | Surface Mount |
| Supplier Device Package | 8-SOIC N |
Key Features
- High initial accuracy of ±2mV maximum
- Low temperature coefficient of 5ppm/°C maximum
- Low dropout voltage, allowing stable output from supplies as low as 100mV above the output voltage
- High output current of 30mA
- Load regulation of 4ppm/mA and line regulation of 4ppm/V
- Short-circuit protection
- Sleep mode capability, reducing supply current to less than 15μA
Applications
The REF191GSZ-REEL is suitable for various applications requiring precise voltage referencing, including:
- 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 REF191GSZ-REEL?
The output voltage is 2.048V.
- What is the temperature coefficient of the REF191GSZ-REEL?
The temperature coefficient is 5ppm/°C maximum.
- What is the operating temperature range of the REF191GSZ-REEL?
The operating temperature range is -40°C to 85°C.
- What is the package type of the REF191GSZ-REEL?
The package type is 8-lead SOIC-N.
- Does the REF191GSZ-REEL have short-circuit protection?
Yes, it does have short-circuit protection.
- How much current does the REF191GSZ-REEL consume in sleep mode?
The supply current is reduced to less than 15μA in sleep mode.
- What are some typical applications of the REF191GSZ-REEL?
Typical applications include portable instruments, ADCs and DACs, smart sensors, solar powered applications, and loop-current-powered instruments.
- What is the maximum output current of the REF191GSZ-REEL?
The maximum output current is 30mA.
- Does the REF191GSZ-REEL support low dropout voltage operation?
Yes, it supports stable output voltage from supplies as low as 100mV above the output voltage.
- How accurate is the initial output voltage of the REF191GSZ-REEL?
The initial accuracy is ±2mV maximum.
