MAX9775(2008) 查看數據表（PDF） - Maxim Integrated

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MAX9775
(Rev.:2008)

2 x 1.5W, Stereo Class D Audio Subsystem with DirectDrive Headphone Amplifier

Maxim Integrated 

2 x 1.5W, Stereo Class D Audio Subsystem

with DirectDrive Headphone Amplifier

ELECTRICAL CHARACTERISTICS (continued)

(VDD = PVDD = CPVDD = 3.3V, VGND = VPGND = VCPGND = 0V, SHDN = VDD, I2C settings (INA gain = +20dB, INB gain = INC gain =

0dB, volume setting = 0dB, mono path gain = 0dB, SHDN = 1, SSM = 1). Speaker load resistors (RLSP) are terminated between

OUT_+ and OUT_-, headphone load resistors are terminated to GND, unless otherwise noted. C1 = C2 = C3 = 1µF. TA = TMIN to

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

PARAMETER

RECEIVER AMPLIFIER

Output Offset Voltage

Click-and-Pop Level

Power-Supply Rejection Ratio

(Note 3)

SYMBOL

CONDITIONS

VOS

KCP

PSRR

TA = +25°C

Peak voltage, TA =

+25°C, A-weighted,

32 samples per

second (Notes 3, 6)

TA = +25°C

Into shutdown

Into mute

Out of shutdown

Out of mute

VDD = 2.7V to 5.5V

f = 217Hz,

100mVP-P ripple

f = 1kHz,

100mVP-P ripple

MIN TYP MAX UNITS

±1.8 ±5.5

mV

-62

-67

dB

-63

-66

58

80

80

70

dB

Output Power

Gain

Total Harmonic Distortion Plus

Noise

Signal-to-Noise Ratio

Slew Rate

Capacitive Drive

HEADPHONE AMPLIFIERS

Output Offset Voltage

Click-and-Pop Level

ESD Protection

Power-Supply Rejection Ratio

(Note 3)

f = 20kHz,

62

100mVP-P ripple

POUT

TA = +25°C,

THD+N = 1%

RL = 16Ω

RL = 32Ω

60

mW

50

AV

3

dB

THD+N

RL = 16Ω (VOUT = 800mVRMS, f = 1kHz)

RL = 32Ω (VOUT = 800mVRMS, f = 1kHz)

0.03

%

0.024

SNR

RL = 16Ω, VOUT = BW = 20Hz to 20kHz

800mVRMS (Note 3) A-weighted

87

89

dB

SR

0.3

V/µs

CL

300

pF

VOS

TA = +25°C

±1.8 ±5.5

mV

Peak voltage, TA =

Into shutdown

KCP

+25°C, A-weighted,

32 samples per

Into mute

Out of shutdown

second (Notes 2, 4) Out of mute

-61

-65

dB

-60

-64

Contact

HP_

Air

±4

kV

±8

VDD = 2.7V to 5.5V

58

80

f = 217Hz,

100mVP-P ripple

80

PSRR TA = +25°C

f = 1kHz,

100mVP-P ripple

dB

70

f = 20kHz,

62

100mVP-P ripple

4 _______________________________________________________________________________________

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