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ADM4073

Analog Devices
Part Number ADM4073
Manufacturer Analog Devices
Description Current-Sense Amplifier
Published Nov 14, 2006
Detailed Description www.DataSheet4U.com Low Cost, Voltage Output, High-Side, Current-Sense Amplifier ADM4073 FEATURES Low cost, compact, cu...
Datasheet PDF File ADM4073 PDF File

ADM4073
ADM4073

Overview
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 bandwidth makes it suitable for use inside battery-charger control loops.
The input common-mode range of 2 V to 28 V is independent of the supply voltage.
The voltage on the output pin is determined by the current flowing through the selectable external sense resistor and the gain of the version selected.
The operating range is 3 V to 28 V with a typical supply current of 500 μA.
The ADM4073 is available in a 6-lead SOT-23 package and is specified over the automotive operating temperature range (−40...


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