MAX9750CEUI datasheet(2/30 Pages) MAXIM

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2.6W Stereo Audio Power Amplifiers and

DirectDrive Headphone Amplifiers

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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.

Supply Voltage (VDD, PVDD, HPVDD, CPVDD to GND)..........+6V

GND to PGND.....................................................................±0.3V

CPVSS, C1N, VSS to GND .........................-6.0V to (GND + 0.3V)

HPOUT_ to GND ....................................................................±3V

Any Other Pin .............................................-0.3V to (VDD + 0.3V)

Duration of OUT_ Short Circuit to GND or PVDD........Continuous

Duration of OUT_+ Short Circuit to OUT_- .................Continuous

Duration of HPOUT_ Short Circuit to GND,

VSS or HPVDD.........................................................Continuous

Continuous Current (PVDD, OUT_, PGND) ...........................1.7A

Continuous Current (CPVDD, C1N, C1P, CPVSS, VSS, HPVDD,

HPOUT_) .......................................................................850mA

Continuous Input Current (All Other Pins) ........................±20mA

Continuous Power Dissipation (TA = +70°C)

28-Pin Thin QFN (derate 20.8mW/°C above +70°C) ..1667mW

28-Pin TSSOP-EP (derate 23.8mW/°C above +70°C).1904mW

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

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

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

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

ELECTRICAL CHARACTERISTICS

(VDD = PVDD = CPVDD = HPVDD = 5V, GND = PGND = CPGND = 0V, SHDN = VDD, CBIAS = 1µF, C1 = C2 = 1µF, speaker load ter-

minated between OUT_+ and OUT_-, headphone load terminated between HPOUT_ and GND, MAX9750: GAIN1 = GAIN2 = VOL =

RL = 33k

Ω = GND, MAX9751/MAX9755: GAIN = VDD = IN1/2 = GND, TA = TMIN to TMAX, unless otherwise noted. Typical values are

at TA = +25°C.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

GENERAL

Supply Voltage Range

VDD, PVDD

Inferred from PSRR test

4.5

5.5

Headphone Supply Voltage

CPVDD,

HPVDD

Inferred from PSRR test

5.5

HPS = GND, speaker mode, RL =

∞

Quiescent Supply Current

IDD

HPS = VDD, headphone mode, RL =

∞

713

Shutdown Supply Current

ISHDN

SHDN = GND

0.2

µA

Bias Voltage

VBIAS

1.7

1.8

1.9

Switching Time

tSW

Gain or input switching

µs

Input Resistance

RIN

Amplifier inputs (Note 2)

Ω

Turn-On Time

tSON

SPEAKER AMPLIFIER (HPS = GND)

Output Offset Voltage

VOS

Measured between OUT_+ - OUT_-

±0.4

±6mV

PVDD or VDD = 4.5V to 5.5V (TA = +25°C)

f = 1kHz, VRIPPLE = 200mVP-P

Power-Supply Rejection Ratio

(Note 3)

PSRR

f = 10kHz, VRIPPLE = 200mVP-P

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