ADR280屬于集成電路（IC）的電壓基準。由亞德諾半導(dǎo)體技術(shù)有限公司制造生產(chǎn)的ADR280電壓基準產(chǎn)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(yīng)用中用作比較的標(biāo)準。其功能行為可能與用于大功率調(diào)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(biāo)準時，若輸出電流容量或?qū)嶋H負載電流增大，其性能通常會降低。

GENERAL DESCRIPTION

The ADR280 is a 1.2 V band gap core reference with excellent line regulation and power supply rejection designed specifically for applications experiencing heavy dynamic supply variations, such as data converter references in GSM, GPRS, and 3G mobile station applications. Devices such as the AD6535 that have an analog baseband IC with on-board baseband, audio codecs, voltage regulators, and battery chargers rely on the ability of the ADR280 to reject input battery voltage variations during RF power amplifier activity.

FEATURES

1.2 V precision output

Excellent line regulation: 2 ppm/V typical

High power supply ripple rejection: –80 dB at 220 Hz

Ultralow power supply current: 16 μA maximum

Temperature coefficient: 40 ppm/°C maximum

Low noise, 12.5 nV/√Hz typical

Operating supply range, 2.4 V to 5.5 V

Compact 3-lead SOT-23 and SC70 packages

APPLICATIONS

List GSM, GPRS, 3G mobile stations

Portable battery-operated electronics

Low voltage converter references

Wireless devices