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MAX4069AUB Datasheet(PDF) 9 Page - Maxim Integrated Products |
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MAX4069AUB Datasheet(HTML) 9 Page - Maxim Integrated Products |
9 / 18 page Bidirectional, High-Side, Current-Sense Amplifiers with Reference _______________________________________________________________________________________ 9 MAX4069 RS+ RS- GSEL SHDN 2.7V TO 24V VCC OUT TO ADC R1 R2 SHUTDOWN GAIN SELECT RSENSE LOAD FROM BATTERY CHARGER REFOUT OA ADJ GND VREF 1.23V CSA Functional Diagram Pin Description PIN MAX4069 MAX4070/ MAX4071 MAX4072 NAME FUNCTION 11 1 SHDN Shutdown Input. Drive SHDN low to select shutdown mode. Connect SHDN to VCC for normal operation. 2 2 2 RS- Negative Connection to the External Sense Resistor 3 3 3 RS+ Positive Connection to the External Sense Resistor 4 — — N.C. No Connection. Not internally connected. 5 4 4 GND Ground. For thin QFN packages, also make an external connection from GND to the under-side exposed paddle. 6 — — ADJ Adjustable Output Voltage Feedback Input. Connect a resistor-divider between REFOUT, ADJ, and GND (MAX4069 only, see Functional Diagram). 7 5 — REFOUT Reference Output Voltage (MAX4069/MAX4070/MAX4071) 8 6 6 OUT Voltage Output. The difference voltage, VOUT - VREF, is proportional to the voltage difference between RS+ and RS- and indicates the correct polarity. 97 7 VCC Supply Voltage Input. Bypass VCC to GND with a 0.1µF capacitor. 10 8 8 GSEL Gain-Setting Input. Connect GSEL low to select gain = 50V/V, or connect GSEL high to select gain = 100V/V. — — 5 REFIN Reference Input Voltage (MAX4072) |
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