Layout

In order to dissipate sense-resistor heat from large

sense currents, solder the RS+ and the RS- pins to

large copper traces. Keep the part away from other

heat-generating devices.

method is recommended. The current into RS+ and RS-

is only a few microamps; therefore, a short distance from

RS+ and RS- pins does not cause significant errors. It is

higher than the values of the trace’s resistance.

Bidirectional, High-Side, Current-Sense

Amplifiers with Reference

______________________________________________________________________________________

13

1

2

3

4

5

10

9

8

7

6

GSEL

OUT

REFOUT

N.C.

RS+

RS-

MAX4069

μMAX

TOP VIEW

ADJ

GND

SHDN

OUT

REFOUT (REFIN)

(REFIN) FOR MAX4072 ONLY.

GND

1

2

8

7

GSEL

RS-

RS+

Thin QFN/

μMAX

3

4

6

5

MAX4070

MAX4071

MAX4072

SHDN

Pin Configurations

Chip Information

TRANSISTOR COUNT: 338

PROCESS: BiCMOS

Selector Guide

PART

REFERENCE

SUPPLY

VOLTAGE

RANGE (V)

COMMON-

MODE RANGE

(V)

MAX4069

ADJUSTABLE

2.7 to 24

1.35 to 24

MAX4070

2.5V

3.6 to 24

1.35 to 24

MAX4071

1.5V

2.7 to 24

1.35 to 24

MAX4072

EXTERNAL

2.7 to 24

1.35 to 24