GENERAL DESCRIPTION

The ADR44x series is a family of XFET? voltage references featuring ultralow noise, high accuracy, and low temperature drift performance. Using Analog Devices, Inc., patented temperature drift curvature correction and XFET (eXtra implanted junction FET) technology, voltage change vs. temperature nonlinearity in the ADR44x is greatly minimized.

FEATURES

Ultralow noise (0.1 Hz to 10 Hz)

ADR440: 1 μV p-p

ADR441: 1.2 μV p-p

ADR443: 1.4 μV p-p

ADR444: 1.8 μV p-p

ADR445: 2.25 μV p-p

Superb temperature coefficient

A grade: 10 ppm/°C

B grade: 3 ppm/°C

Low dropout operation: 500 mV

Input range: (VOUT+ 500 mV) to 18 V

High output source and sink current

+10 mA and ?5 mA, respectively

Wide temperature range: ?40°C to +125°C

APPLICATIONS

Precision data acquisition systems

High resolution data converters

Battery-powered instrumentation

Portable medical instruments

Industrial process control systems

Precision instruments

Optical control circuits

ADR444B屬于集成電路（IC） > 電壓基準(zhǔn)。亞德諾半導(dǎo)體技術(shù)有限公司制造生產(chǎn)的ADR444B電壓基準(zhǔn)產(chǎn)品屬于基準(zhǔn)電壓源系列，可通過(guò)相對(duì)較不穩(wěn)定的電源提供穩(wěn)定的電勢(shì)，電壓值始終保持恒定，以便在測(cè)量、控制和類(lèi)似應(yīng)用中用作比較的標(biāo)準(zhǔn)。其功能行為可能與用于大功率調(diào)節(jié)的線(xiàn)性穩(wěn)壓器相似，但基準(zhǔn)電壓源器件卻不適合用于此類(lèi)用途。用作比較標(biāo)準(zhǔn)時(shí)，若輸出電流容量或?qū)嶋H負(fù)載電流增大，其性能通常會(huì)降低。