GENERAL DESCRIPTION

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.

FEATURES

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

APPLICATIONS

Precision data acquisition systems

High resolution converters

Battery-powered instrumentation

Portable medical instruments

Industrial process control systems

Precision instruments

Optical network control circuits

ADR421BR属于集成电路（IC） > 电压基准。亚德诺半导体技术有限公司制造生产的ADR421BR电压基准产品属于基准电压源系列，可通过相对较不稳定的电源提供稳定的电势，电压值始终保持恒定，以便在测量、控制和类似应用中用作比较的标准。其功能行为可能与用于大功率调节的线性稳压器相似，但基准电压源器件却不适合用于此类用途。用作比较标准时，若输出电流容量或实际负载电流增大，其性能通常会降低。