ADR391屬于集成電路（IC）的電壓基準。由亞德諾半導體技術有限公司制造生產的ADR391電壓基準產品屬于基準電壓源系列，可通過相對較不穩(wěn)定的電源提供穩(wěn)定的電勢，電壓值始終保持恒定，以便在測量、控制和類似應用中用作比較的標準。其功能行為可能與用于大功率調節(jié)的線性穩(wěn)壓器相似，但基準電壓源器件卻不適合用于此類用途。用作比較標準時，若輸出電流容量或實際負載電流增大，其性能通常會降低。

GENERAL DESCRIPTION

The ADR390, ADR391, ADR392, and ADR395 are precision 2.048 V, 2.5 V, 4.096 V, and 5 V band gap voltage references, respectively, featuring low power and high precision in a tiny footprint. Using ADI’s patented temperature drift curvature correction techniques, the ADR39x references achieve a low 9 ppm/°C of temperature drift in the TSOT package.

FEATURES

Compact TSOT-23-5 packages

Low temperature coefficient

B grade: 9 ppm/°C

A grade: 25 ppm/°C

Initial accuracy

B grade: ±4 mV maximum

A grade: ±6 mV maximum

Ultralow output noise: 5 μV p-p (0.1 Hz to 10 Hz)

Low dropout: 300 mV

Low supply current

3 μA maximum in shutdown

120 μA maximum in operation

No external capacitor required

Output current: 5 mA

Wide temperature range

?40°C to + 125°C

APPLICATIONS

Battery-powered instrumentation

Portable medical instrumentation

Data acquisition systems

Industrial process controls

Automotive