MAX9715 Ver la hoja de datos (PDF) - Maxim Integrated

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MAX9715

2.8W, Low-EMI, Stereo, Filterless Class D Audio Amplifier

Maxim Integrated 

2.8W, Low-EMI, Stereo, Filterless Class D

Audio Amplifier

ABSOLUTE MAXIMUM RATINGS

VDD, PVDD, to GND ...............................................................+6V

GND to PGND .......................................................-0.3V to +0.3V

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

Duration of OUT__ Short Circuit to PGND or PVDD....Continuous

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

Continuous Current Into/Out of (PVDD, OUT__, PGND)........1.7A

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

Continuous Power Dissipation (TA = +70°C)

16-Pin TQFN-EP (derate 20.8mW/°C above +70°C)..1666mW

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

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

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

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

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.

ELECTRICAL CHARACTERISTICS

(VDD = PVDD = 5.0V, GND = PGND = 0V, VSHDN = VDD, CBIAS = 1μF, speaker impedance = 8Ω in series with 68μH connected between

OUT_+ and OUT_-, GAIN = +10.5dB, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Notes 1, 2)

PARAMETER

SYMBOL

GENERAL

Supply Voltage Range

VDD

Quiescent Current

IDD

Shutdown Supply Current

ISHDN

Input Resistance

RIN

Turn-On Time

BIAS Voltage

tON

VBIAS

CLASS D SPEAKER AMPLIFIERS

Output Offset Voltage

VOS

Maximum Speaker Amplifier Gain

(Note 3)

AV

CONDITIONS

Inferred from PSRR test

No load

VSHDN = 0V

TA = +25°C

TA = TMIN to TMAX

GAIN = 0

GAIN = 1

MIN TYP MAX UNITS

4.5

5.5

V

12.8

16

mA

0.1

2

μA

6.5

10

13.5

kΩ

25

ms

1.8

V

12.6

45

mV

70

10.5

dB

9.0

Power-Supply Rejection Ratio

Output Power

Total Harmonic Distortion Plus

Noise

Signal-to-Noise Ratio

Maximum Capacitive Load

Switching Frequency

PSRR

POUT

THD+N

SNR

CL_MAX

fSW

VIN_ = 0V

PVDD or VDD = 4.5V to

5.5V

f = 1kHz, 100mVP-P

f = 20kHz, 100mVP-P

THD+N = 1%

RL = 8Ω

RL = 4Ω

THD+N = 10%

RL = 8Ω

RL = 4Ω

f = 1kHz

RL = 8Ω, POUT = 1.2W

RL = 4Ω, POUT = 2W

POUT = 1W, BW = 22Hz to 22kHz

POUT = 1W, A-weighted

Average frequency in spread-spectrum

operation

52.4

1.00

75

71

60

1.4

2.3

1.7

2.8

0.06

0.07

89

93

200

1.22

1.40

dB

W

%

dB

pF

MHz

2 _______________________________________________________________________________________

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