ADR421BRZ Datasheet

Ultraprecision, Low Noise, 2.048 V/2.500 V/ 3.00 V/5.00 V XFET? Voltage References


The ADR42x are a series of ultraprecision, second generation eXtra implanted junction FET (XFET) voltage references featuring low noise, high accuracy, and excellent long-term stability in SOIC and MSOP footprints.

Low noise (0.1 Hz to 10 Hz)
 ADR420: 1.75 μV p-p
 ADR421: 1.75 μV p-p
 ADR423: 2.0 μV p-p
 ADR425: 3.4 μV p-p
Low temperature coefficient: 3 ppm/°C
Long-term stability: 50 ppm/1000 hours
Load regulation: 70 ppm/mA
Line regulation: 35 ppm/V
Low hysteresis: 40 ppm typical
Wide operating range
 ADR420: 4 V to 18 V
 ADR421: 4.5 V to 18 V
 ADR423: 5 V to 18 V
 ADR425: 7 V to 18 V
Quiescent current: 0.5 mA maximum
High output current: 10 mA
Wide temperature range: −40°C to +125°C

Precision data acquisition systems
High resolution converters
Battery-powered instrumentation
Portable medical instruments
Industrial process control systems
Precision instruments
Optical network control circuits



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Manufacturer information


Analog Devices, Inc. Introduction - Analog Devices, Inc. (NASDAQ: ADI) defines innovation and excellence in signal processing. ADI's analog, mixed-signal, and digital signal processing (DSP) integrated circuits (IC) play a fundamental role in converting, conditioning, and processing real-world phenomena such as light, sound, temperature, motion, and pressure into electrical signals to be used in a wide array of electronic equipment. ADI is synonymous with high performance among electronics manufacturers and we collaborate with our customers to define the very best in the quality of the user experience. That means the clearest image, crispest sound, and optimum interface, size and performance in thousands of entertainment, medical, communications, industrial and other applications.

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