MAX9938HEUK+ datasheet(2/14 Pages) MAXIM

Part #	MAX9938HEUK+

Description	1μA, 4-Bump UCSP/SOT23, Precision Current-Sense Amplifier

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Manufacturer	MAXIM [Maxim Integrated Products]

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1µA, 4-Bump UCSP/SOT23,

Precision Current-Sense Amplifier

2

_______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VRS+ = VRS- = 3.6V, VSENSE = (VRS+ - VRS-) = 0V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional

operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to

absolute maximum rating conditions for extended periods may affect device reliability.

Note 1: All devices are 100% production tested at TA = +25°C. All temperature limits are guaranteed by design.

Note 2: VOUT = 0. ICC is the total current into RS+ plus RS- pins.

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

VRS+ = 5V, TA = +25°C

0.5

0.85

VRS+ = 5V, -40°C < TA < +85°C

1.1

VRS+ = 28V, TA = +25°C

1.1

1.8

Supply Current (Note 2)

ICC

VRS+ = 28V, -40°C < TA < +85°C

2.5

µA

Common-Mode Input Range

VCM

Guaranteed by CMRR , -40°C < TA < +85°C

1.6

28

V

Common-Mode Rejection Ratio

CMRR

1.6V < VRS+ < 28V, -40°C < TA < +85°C

94

130

dB

TA = +25°C

±100

±500

Input Offset Voltage (Note 3)

VOS

-40°C < TA < +85°C

±600

µV

MAX9938T

25

MAX9938F

50

MAX9938H

100

Gain

G

MAX9938W

200

V/V

TA = +25°C

±0.1

±0.5

Gain Error (Note 4)

GE

-40°C < TA < +85°C

±0.6

%

MAX9938T/F/H

7.0

10

13.2

Output Resistance

ROUT

(Note 5)

MAX9938W

14.0

20

26.4

k

Ω

Gain = 25

1.5

15

Gain = 50

3

30

Gain = 100

6

60

OUT Low Voltage

VOL

Gain = 200

12

120

mV

OUT High Voltage

VOH

VOH = VRS- - VOUT (Note 6)

0.1

0.2

V

VSENSE = 50mV, gain = 25

125

VSENSE = 50mV, gain = 50

60

VSENSE = 50mV, gain = 100

30

Small-Signal Bandwidth

(Note 5)

BW

VSENSE = 50mV, gain = 200

15

kHz

Output Settling Time

tS

1% final value, VSENSE = 50mV

100

µs

Power-Up Time

tON

1% final value, VSENSE = 50mV

200

µs

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 (TA = +70°C)

4-Bump UCSP (derate 3.0mW/°C above +70°C).........238mW

5-Pin SOT23 (derate 3.9mW/°C above +70°C)............312mW

6-Pin µDFN (derate 4.5mW/°C above +70°C) .............358mW

Operating Temperature Range ...........................-40°C to +85°C

Junction Temperature ......................................................+150°C

Storage Temperature Range ............................-65°C to +150°C

Bump Temperature (soldering) Reflow............................+260°C

Lead Temperature (soldering, 10s) .................................+300°C

Soldering Temperature (reflow) .......................................+260°C

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