MAX9750CEUI datasheet(4/30 Pages) MAXIM

Part #	MAX9750CEUI

Description	2.6W Stereo Audio Power Amplifiers and DirectDrive Headphone Amplifiers

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Manufacturer	MAXIM [Maxim Integrated Products]

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4 / 30 page

2.6W Stereo Audio Power Amplifiers and

DirectDrive Headphone Amplifiers

4

_______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

(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

HEADPHONE AMPLIFIER (HPS = VDD)

Output Offset Voltage

VOS

TA = +25°C

±2

±7mV

HPVDD = 3V to 5.5V, TA = +25°C70

75

f = 1kHz, VRIPPLE = 200mVP-P

73

Power-Supply Rejection Ratio

(Note 3)

PSRR

f = 10kHz, VRIPPLE = 200mVP-P

63

dB

RL = 32

Ω

40

50

Output Power

POUT

THD+N = 1%,

f = 1kHz,

TA = +25°C

RL = 16

Ω

110

mW

RL = 32

Ω, POUT = 20mW, f = 1kHz

0.007

Total Harmonic Distortion Plus

Noise

THD+N

RL = 16

Ω, POUT = 75mW, f = 1kHz

0.03

%

Signal-to-Noise Ratio

SNR

RL = 32

Ω, POUT = 50mW,

BW = 22Hz to 22kHz

95

dB

Noise

Vn

BW = 22Hz to 22kHz

12

µVRMS

Capacitive-Load Drive

CL

No sustained oscillations

200

pF

L to R, R to L, f = 10kHz

88

Crosstalk

Any unselected input to any active input,

f = 10kHz (MAX9751)

88

dB

Slew Rate

SR

0.4

V/µs

ESD

IEC air discharge

±8

kV

GAIN2 = GAIN = 1, GAIN1 = X

0

Gain

AV

GAIN2 = GAIN = 0, GAIN1 = X

3

dB

CHARGE PUMP

Charge-Pump Frequency

fOSC

500

550

600

kHz

VOLUME CONTROL (MAX9750_)

VOL Input Impedance

RVOL

100

M

Ω

VOL Input Hysteresis

10

mV

Full Mute Input Voltage

(Note 4)

0.858 x

HPVDD

V

Channel Matching

AV = -25dB to +13.5dB

±0.2

dB

BEEP INPUT (MAX9750_)

Beep Signal Minimum Amplitude

VBEEP

0.8

VP-P

Beep Signal Minimum Frequency

fBEEP

200

Hz

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