ADM4073

www.DataSheet4U.com Low Cost, Voltage Output, High-Side, Current-Sense Amplifier ADM4073 FEATURES Low cost, compact, current-sense solution Three available gain versions 20 V/V (ADM4073T) 50 V/V (ADM4073F) 100 V/V (ADM4073H) Typical ±1.0% full-scale accuracy 500 μA supply current Wide 1.8 MHz bandwidth 3 V to 28 V operating supply Wide 2 V to 28 V common-mode range Independent of supply voltage Operates from −40°C to +125°C Available in a 6-lead SOT-23 package Pin-to-pin compatibility with the MAX4073 FUNCTIONAL BLOCK DIAGRAM 2V TO 28V RS+ IRG1 RG1 RG2 ILOAD RSENSE RS– VOUT 3V TO 28V 0.1µF VCC AV ADM4073 CURRENT MIRROR IRGD GND RGD = 12kΩ 05131-003 VOUT APPLICATIONS Cell phones, PDAs Notebook computers Portable/battery-powered systems Smart battery packs/chargers Automotive Power management systems PA bias control General system/board-level current monitoring Precision current sources Figure 1. APPLICATION DIAGRAM 2V TO 28V RSENSE VOUT RS+ 3V TO 28V 0.1µF VCC RS– OUT ADC ADM4073 GND Figure 2. GENERAL DESCRIPTION The ADM4073 is a low cost, high-side, current-sense amplifier ideal for small portable applications such as cell phones, notebook computers, PDAs, and other systems where current monitoring is required. The device is available in three different gain models, eliminating the need for gain-setting resistors. Because the ground path is not interrupted, the ADM4073 is particularly useful in rechargeable battery-powered systems, while its wide 1.8 MHz band...