Rainbow-electronics MAX9938 User Manual download pdf (Page 1)

General Description

The MAX9938 high-side current-sense amplifier offers

precision accuracy specifications of V

less than

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 three gain ver-

sions: 25V/V (MAX9938T), 50V/V (MAX9938F), and

100V/V (MAX9938H).

The three 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

SENSE

voltage for very low voltage drop at

full-current measurement.

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

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

specified for operation over the -40°C to +85°C extend-

ed temperature range.

Applications

Cell Phones

PDAs

Power Management Systems

Portable/Battery-Powered Systems

Notebook Computers

Features

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

♦ Low 500µV (max) Input Offset Voltage

♦ Low < 0.5% (max) Gain Error

♦ Input Common Mode: +1.6V to +28V

♦ Voltage Output

♦ Three Gain Versions Available

25V/V (MAX9938T)

50V/V (MAX9938F)

100V/V (MAX9938H)

♦ Tiny 1mm x 1mm x 0.6mm, 4-Bump UCSP

or 5-Pin SOT23 Package

MAX9938

1µA, 4-Bump UCSP/SOT23,

Precision Current-Sense Amplifier

________________________________________________________________

Maxim Integrated Products

MAX9938T/F/H

132

RS+ RS-

GND OUTGND

SOT23

UCSP

TOP VIEW

(BUMPS ON BOTTOM)

B1 B2

GND

RS+

OUT

RS-A2

Pin Configurations

19-4110; Rev 0; 4/08

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.

UCSP is a trademark of Maxim Integrated Products, Inc.

Ordering Information

Denotes a lead-free package.

Note: All devices are specified over the -40°C to +85°C

extended temperature range.

PART

PIN-

PACKAGE

GAIN (V/V)

TOP MARK

MAX9938TEBS+

4 UCSP 25 +AGD

MAX9938FEBS+

4 UCSP 50 +AGE

MAX9938HEBS+

4 UCSP 100 +AGF

MAX9938TEUK+

5 SOT23 25 +AFFB

MAX9938FEUK+

5 SOT23 50 +AFFC

MAX9938HEUK+

5 SOT23 100 +AFFD

1 2 3 4 5 6 7 8 9

1µA, 4-Bump UCSP/SOT23 1

Summary of Contents

Page 1 - 1µA, 4-Bump UCSP/SOT23

General DescriptionThe MAX9938 high-side current-sense amplifier offersprecision accuracy specifications of VOSless than500μV (max) and gain error les

Page 2

MAX99381µA, 4-Bump UCSP/SOT23,Precision Current-Sense Amplifier2 _____________________________________________________________________________________

Page 3

MAX99381µA, 4-Bump UCSP/SOT23,Precision Current-Sense Amplifier_______________________________________________________________________________________

Page 4

MAX99381µA, 4-Bump UCSP/SOT23,Precision Current-Sense Amplifier4 _____________________________________________________________________________________

Page 5

MAX99381µA, 4-Bump UCSP/SOT23,Precision Current-Sense Amplifier_______________________________________________________________________________________

Page 6

MAX99381µA, 4-Bump UCSP/SOT23,Precision Current-Sense Amplifier6 _____________________________________________________________________________________

Page 7

MAX99381µA, 4-Bump UCSP/SOT23,Precision Current-Sense Amplifier_______________________________________________________________________________________

Page 8

MAX99381µA, 4-Bump UCSP/SOT23,Precision Current-Sense Amplifier8 _____________________________________________________________________________________

Page 9

MAX99381µA, 4-Bump UCSP/SOT23,Precision Current-Sense AmplifierMaxim cannot assume responsibility for use of any circuitry other than circuitry entire

Comments to this Manuals

No comments

Rainbow-electronics MAX9938 User Manual Page 1

Browse online or download User Manual for Receivers and Amplifiers Rainbow-electronics MAX9938. Rainbow Electronics MAX9938 User Manual

Summary of Contents

Comments to this Manuals

Rainbow-electronics MAX9938 User Manual Page 1

Browse online or download User Manual for Receivers and Amplifiers Rainbow-electronics MAX9938. Rainbow Electronics MAX9938 User Manual

Summary of Contents

Comments to this Manuals

Related products and manuals for Receivers and Amplifiers Rainbow-electronics MAX9938