Datasheet ADM4073 (Analog Devices)

Low Cost, Voltage Output, High-Side, Current-Sense Amplifier ADM4073 FEATURES FUNCTIONAL BLOCK DIAGRAM I Low cost, compact, current-sense solution LOAD 2V TO 28V RSENSE VOUT 3 available gain versions RS– 20 V/V (ADM4073T) RS+ 50 V/V (ADM4073F) I V RG1 100 V/V (ADM4073H) 3V TO 28V CC RG1 RG2 Typical ±1.0% full-scale accuracy 0.1µF Supply current: 500 μA AV Wide bandwidth: 1.8 MHz Operating supply: 3 V to 28 V Wide common-mode range: 2 V to 28 V ADM4073 Independent of supply voltage Operating temperature range: −40°C to +125°C CURRENT OUT MIRROR VOUT Available in a 6-lead SOT-23 package RGD = 12kΩ Pin-to-pin compatibility with the MAX4073 IRGD
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APPLICATIONS
Figure 1.
Cell phones PDAs APPLICATION DIAGRAM Notebook computers R Portable, battery-powered systems 2V TO 28V SENSE VOUT Smart battery packs and chargers Automotive RS+ RS– Power management systems 3V TO 28V VCC PA bias control 0.1µF OUT ADC General system-level, board-level current monitoring ADM4073 Precision current sources GND
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GENERAL DESCRIPTION
The ADM4073 is a low cost, high-side, current-sense amplifier The voltage on the output pin is determined by the current ideal for small portable applications, such as cell phones, flowing through the selectable external sense resistor and the notebook computers, PDAs, and other systems where current gain of the version selected. The operating range is 3 V to 28 V monitoring is required. The device is available in three different with a typical supply current of 500 μA. gain models, eliminating the need for gain-setting resistors. The ADM4073 is available in a 6-lead SOT-23 package and is Because the ground path is not interrupted, the ADM4073 is specified over the automotive operating temperature range particularly useful in rechargeable battery-powered systems, (−40°C to +125°C). 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.
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Document Outline FEATURES APPLICATIONS FUNCTIONAL BLOCK DIAGRAM APPLICATION DIAGRAM GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL CHARACTERISTICS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION RSENSE OUTPUT (OUT) OUTLINE DIMENSIONS ORDERING GUIDE