Precision 2.048 V reference for industrial and instrumentation rails
The REF191FS from Analog Devices is a fixed-output series voltage reference delivering 2.048 V with ±0.24% initial accuracy. Its 10 ppm/°C temperature coefficient keeps the output stable across the full -40°C to 85°C industrial range, making it a fit for ADC reference biasing, DAC scaling, or precision sensor excitation in factory automation, process control, and test equipment. The series topology means it regulates from an input up to 18 V and can source up to 30 mA to external loads — enough to drive multiple converter reference inputs or a resistive bridge.
Package and mounting
Housed in an 8-SOIC package with a 3.90 mm body width, the REF191FS is a standard surface-mount footprint for reflow assembly. The supplier device package is 8-SOIC; the 0.154-inch width fits common PCB layouts without requiring fine-pitch processes.
Lifecycle and sourcing
RoHS compliance is listed as non-compliant, which matters for designs requiring full RoHS exemption — verify your assembly's exemption allowance if this is a concern.