Analog Devices Inc. REF191GS-REEL Precision Voltage Reference

The REF191GS-REEL from Analog Devices Inc. is a high-precision voltage reference component designed to ensure stability and accuracy in a wide range of applications. This device is part of the REF19x series, which is renowned for its low noise, low power, and high accuracy voltage references. The REF191GS-REEL is available in a surface-mount reel packaging, making it ideal for automated production environments.

With an output voltage of 2.5V, this voltage reference offers an initial accuracy of ±0.15% and a low temperature coefficient of 10ppm/°C max, ensuring reliable performance over the industrial temperature range of -40°C to +85°C. Its low dropout voltage and low supply current of 45μA max make it an excellent choice for battery-powered devices and portable equipment where power efficiency is crucial.

The REF191GS-REEL features a series topology with a buffer amplifier, which allows it to offer low output noise of 8μV P-P max (0.1Hz to 10Hz) and a low supply voltage of 3.0V to 12V. Its load regulation is typically 25ppm/mA, which contributes to its high level of precision in the presence of varying load conditions. The device also provides short-circuit protection and is specified for sink and source capability, enhancing its robustness in complex circuits.

Applications for the REF191GS-REEL are diverse and include precision data converters, portable instrumentation, battery management, and industrial control systems. Its small footprint and reliability make it a preferred choice for engineers looking to design systems that require a stable and precise reference voltage.

Key Features:

• Output Voltage: 2.5V
• Initial Accuracy: ±0.15%
• Temperature Coefficient: 10ppm/°C max
• Low Dropout Voltage
• Low Supply Current: 45μA max
• Low Noise: 8μV P-P max (0.1Hz to 10Hz)
• Wide Supply Voltage Range: 3.0V to 12V
• Load Regulation: 25ppm/mA
• Short-Circuit Protection
• Sink and Source Capability
• Operating Temperature Range: -40°C to +85°C

The REF191GS-REEL is a testament to Analog Devices Inc.'s commitment to providing high-performance, reliable components that meet the stringent needs of modern electronic systems.