MAX4080FASA datasheet(2/15 Pages) MAXIM

2 / 15 page

76V, High-Side, Current-Sense Amplifiers with

Voltage Output

_______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

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.

VCC to GND ............................................................-0.3V to +80V

RS+, RS- to GND....................................................-0.3V to +80V

OUT to GND.............-0.3V to the lesser of +18V or (VCC + 0.3V)

REF1A, REF1B to GND

(MAX4081 Only)....-0.3V to the lesser of +18V or (VCC + 0.3V)

Output Short Circuit to GND.......................................Continuous

Differential Input Voltage (VRS+ - VRS-) ...............................±80V

Current into Any Pin..........................................................±20mA

Continuous Power Dissipation (TA = +70°C)

8-Pin µMAX (derate 4.5mW/°C above +70°C) .............362mW

8-Pin SO (derate 5.88mW/°C above +70°C)................471mW

Operating Temperature Range .........................-40°C to +125°C

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

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

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

DC ELECTRICAL CHARACTERISTICS

(VCC = VRS+ = 4.5V to 76V, VREF1A = VREF1B = 5V (MAX4081 only), VSENSE = (VRS+ - VRS-) = 0V, RLOAD = 100k

Ω, TA = TMIN to

TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Notes 1, 2)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Operating Voltage Range

VCC

Inferred from PSRR test

4.5

Common-Mode Range

CMVR

Inferred from CMRR test (Note 3)

4.5

MAX4080

190

Supply Current

ICC

VCC = VRS+ = 76V,

no load

MAX4081

103

190

µA

Leakage Current

IRS+, IRS-

VCC = 0V, VRS+ = 76V

0.01

µA

Input Bias Current

IRS+, IRS-

VCC = VRS+ = 76V

µA

MAX4080F/MAX4081F

±1000

MAX4080T/MAX4081T

±250

Full-Scale Sense Voltage (Note 4)

VSENSE

MAX4080S/MAX4081S

±100

MAX4080F/MAX4081F

MAX4080T/MAX4081T

Gain

MAX4080S/MAX4081S

V/V

TA = +25

°C

±0.1

±0.6

TA = -40

°C to +85°C

±1

Gain Accuracy

∆AV

VCC = VRS+ = 48V

(Note 5)

TA = TMIN to TMAX

±1.2

TA = +25°C

±0.1

±0.6

TA = -40

°C to +85°C

±1

Input Offset Voltage

VOS

VCC = VRS+ = 48V

(Note 6)

TA = TMIN to TMAX

±1.2

Common-Mode Rejection Ratio

CMRR

VCC = 48V, VRS+ = 4.5V to 76V

100

124

Power-Supply Rejection Ratio

PSRR

VRS+ = 48V, VCC = 4.5V to 76V

100

122

MAX4080F/MAX4081F,

VSENSE = 1000mV

MAX4080T/MAX4081T,

VSENSE = 250mV

OUT High Voltage

(VCC -

VOH)

VCC = 4.5V, VRS+

= 48V, VREF1A =

VREF1B = 2.5V,

IOUT (sourcing) =

+500µA (Note 8)

MAX4080S/MAX4081S,

VSENSE = 100mV

0.15

0.27

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