MAX9938EVKIT+ Maxim Integrated Products, MAX9938EVKIT+ Datasheet

MAX9938EVKIT+

Manufacturer Part Number

MAX9938EVKIT+

Description

KIT EVAL FOR MAX9938

Manufacturer

Maxim Integrated Products

Datasheets

1.MAX9938EVKIT.pdf (14 pages)

2.MAX9938EVKIT.pdf (4 pages)

Specifications of MAX9938EVKIT+

Channels Per Ic

1 - Single

Amplifier Type

Current Sense

-3db Bandwidth

60kHz

Operating Temperature

-40°C ~ 85°C

Current - Supply (main Ic)

1.1µA

Voltage - Supply, Single/dual (±)

1.6 V ~ 28 V

Board Type

Fully Populated

Utilized Ic / Part

MAX9938

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Output Type

Current - Output / Channel

Slew Rate

Current page: 1 of 14
Download datasheet (518Kb)

The MAX9938 high-side current-sense amplifier offers

precision accuracy specifications of V

500μV (max) and gain error less than 0.5% (max).

Quiescent supply current is an ultra-low 1μA. The

MAX9938 fits in a tiny, 1mm x 1mm UCSP™ package

size or a 5-pin SOT23 package, making the part ideal for

applications in notebook computers, cell phones, PDAs,

and all battery-operated portable devices where accura-

cy, low quiescent current, and small size are critical.

The MAX9938 features an input common-mode voltage

range from 1.6V to 28V. These current-sense amplifiers

have a voltage output and are offered in four gain versions:

25V/V (MAX9938T), 50V/V (MAX9938F), 100V/V

(MAX9938H), and 200V/V (MAX9938W).

The four gain selections offer flexibility in the choice of

the external current-sense resistor. The very low 500μV

(max) input offset voltage allows small 25mV to 50mV

full-scale V

full-current measurement.

The MAX9938 is offered in tiny 4-bump, UCSP (1mm x

1mm x 0.6mm footprint), 5-pin SOT23, and 6-pin μDFN

(2mm x 2mm x 0.8mm) packages specified for operation

over the -40°C to +85°C extended temperature range.

19-4110; Rev 6; 1/11

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

Cell Phones

PDAs

Power Management Systems

Portable/Battery-Powered Systems

Notebook Computers

SENSE

DRAWINGS NOT TO SCALE

GND

RS+

________________________________________________________________ Maxim Integrated Products

voltage for very low voltage drop at

(BUMPS ON BOTTOM)

MAX9938T/F/H/W

General Description

TOP VIEW

UCSP

Precision Current-Sense Amplifier

Applications

RS-

OUT

less than

GND

RS+

MAX9938T/F/H/W

1µA, 4-Bump UCSP/SOT23,

SOT23

GND

o Ultra-Low Supply Current of 1µA (max)

o Low 500µV (max) Input Offset Voltage

o Low < 0.5% (max) Gain Error

o Input Common Mode: +1.6V to +28V

o Voltage Output

o Four Gain Versions Available

o Tiny 1mm x 1mm x 0.6mm, 4-Bump UCSP,

+ 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.

MAX9938TEBS+G45

MAX9938FEBS+G45

MAX9938HEBS+G45

MAX9938WEBS+G45

MAX9938TEUK+

MAX9938FEUK+

MAX9938HEUK+

MAX9938WEUK+

MAX9938FELT+

RS-

OUT

25V/V (MAX9938T)

50V/V (MAX9938F)

100V/V (MAX9938H)

200V/V (MAX9938W)

µDFN Packages

5-Pin SOT23, or 2mm x 2mm x 0.8mm, 6-Pin

PART

GND

N.C.

OUT

Ordering Information

(PADS ON BOTTOM)

PIN-

PACKAGE

4 UCSP

5 SOT23

6 μDFN

MAX9938FELT

TOP VIEW

μDFN

Pin Configurations

GAIN

(V/V)

100

200

100

200

N.C.

RS+

RS-

Features

+AFGZ

+AFFC

+AFFD

MARK

+AFFB

+AGD

+ACM

+AGE

+AGF

+AGI

TOP

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

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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 ...

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