MAX9938EVKIT+ Maxim Integrated Products, MAX9938EVKIT+ Datasheet
MAX9938EVKIT+
Specifications of MAX9938EVKIT+
Related parts for MAX9938EVKIT+
MAX9938EVKIT+ Summary of contents
Page 1
... MAX9938HEBS+G45 MAX9938WEBS+G45 Applications MAX9938TEUK+ MAX9938FEUK+ MAX9938HEUK+ MAX9938WEUK+ MAX9938FELT+ + Denotes a lead(Pb)-free/RoHS-compliant package. G45 indicates protective die coating. Note: All devices are specified over the -40°C to +85°C extended temperature range. UCSP is a trademark of Maxim Integrated Products, Inc. RS+ RS RS- MAX9938T/F/H/W OUT GND ...
Page 2
UCSP/SOT23, Precision Current-Sense Amplifier ABSOLUTE MAXIMUM RATINGS RS+, RS- to GND....................................................-0.3V to +30V OUT to GND .............................................................-0.3V to +6V RS+ to RS- ...........................................................................±30V Short-Circuit Duration: OUT to GND ..........................Continuous Continuous Input Current (Any Pin)..................................±20mA Continuous Power Dissipation (T ...
Page 3
Precision Current-Sense Amplifier ELECTRICAL CHARACTERISTICS (continued 3.6V RS+ RS- SENSE RS+ RS- Note 1: All devices are 100% production tested at T Note the total ...
Page 4
UCSP/SOT23, Precision Current-Sense Amplifier ( 3.6V +25°C, unless otherwise noted.) RS+ RS- A GAIN ERROR vs. COMMON-MODE VOLTAGE 0.1 0 -0.1 -0.2 -0.3 -0.4 -0 VOLTAGE (V) ...
Page 5
Precision Current-Sense Amplifier ( 3.6V +25°C, unless otherwise noted.) RS+ RS- A SMALL-SIGNAL PULSE RESPONSE (GAIN = 25) V SENSE V OUT 25μs/div LARGE-SIGNAL PULSE RESPONSE (GAIN = 50) V SENSE V OUT 25μs/div PIN ...
Page 6
UCSP/SOT23, Precision Current-Sense Amplifier I LOAD V = 1.6V TO 28V BATT Detailed Description The MAX9938 unidirectional high-side, current-sense amplifier features a 1.6V to 28V input common-mode range. This feature allows the monitoring of current out of a ...
Page 7
Precision Current-Sense Amplifier Applications Information Choosing the Sense Resistor Choose R based on the following criteria: SENSE A high R value causes the power-source voltage SENSE to drop due to IR loss. For minimal voltage loss, use the lowest R ...
Page 8
UCSP/SOT23, Precision Current-Sense Amplifier The MAX9938 allows two methods of filtering to help improve performance in the presence of input common- mode voltage and input differential voltage transients. Figure 1 shows a differential input filter. The capacitor CIN ...
Page 9
Precision Current-Sense Amplifier Bidirectional Application Battery-powered systems may require a precise bidi- rectional current-sense amplifier to accurately monitor the battery’s charge and discharge currents. Measurements of the two separate outputs with respect to GND yields an accurate measure of the ...
Page 10
UCSP/SOT23, Precision Current-Sense Amplifier For the latest package outline information and land patterns www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix ...
Page 11
Precision Current-Sense Amplifier For the latest package outline information and land patterns www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the ...
Page 12
UCSP/SOT23, Precision Current-Sense Amplifier For the latest package outline information and land patterns www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix ...
Page 13
Precision Current-Sense Amplifier For the latest package outline information and land patterns www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the ...
Page 14
... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 14 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2011 Maxim Integrated Products ...