MAX9746 datasheet(2/16 Pages) MAXIM

2 / 16 page

1.2W, Low-EMI, Filterless,

Class D Audio Amplifier

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ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VDD = PVDD = SHDN = 3.3V, GND = PGND = 0V, SYNC = GND (FFM), RL = 8Ω, RL connected between OUT+ and OUT-, TA =

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

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.

VDD to GND..............................................................................6V

PVDD to PGND .........................................................................6V

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

All Other Pins to GND.................................-0.3V to (VDD + 0.3V)

Continuous Current Into/Out of PVDD/PGND/OUT_ ........±600mA

Continuous Input Current (all other pins)..........................±20mA

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

Duration of Short Circuit Between OUT+ and OUT- ..Continuous

Continuous Power Dissipation (TA = +70°C)

12-Bump UCSP (derate 6.1mW/°C above +70°C)........484mW

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

Bump Temperature (soldering)

Reflow ..........................................................................+235°C

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

GENERAL

Supply Voltage Range

VDD

Inferred from PSRR test

2.5

5.5

Quiescent Current

IDD

5.2

Shutdown Current

ISHDN

0.1

µA

Turn-On Time

tON

Input Resistance

RIN

TA = +25°C

kΩ

Input Bias Voltage

VBIAS

Either input

0.73

0.83

0.93

Voltage Gain

TA = +25°C

±11

±80

Output Offset Voltage

VOS

TMIN ≤ TA ≤ TMAX

±120

Common-Mode Rejection Ratio

CMRR

fIN = 1kHz, input referred

VDD = 2.5V to 5.5V, TA = +25°C

fRIPPLE = 217Hz

Power-Supply Rejection Ratio

(Note 3)

PSRR

200mVP-P ripple

fRIPPLE = 20kHz

Output Power

POUT

THD+N = 1%

RL = 8Ω

530

Total Harmonic Distortion

Plus Noise

THD+N

fIN = 1kHz, either

FFM or SSM

RL = 8Ω,

POUT = 125mW

0.1

FFM

BW = 22Hz

to 22kHz

SSM

FFM

Signal-to-Noise Ratio

SNR

VOUT = 2VRMS

A-weighted

SSM

SYNC = GND

980

1100

1220

SYNC = float

1280

1450

1620

Oscillator Frequency

fOSC

SYNC = VDD (SSM mode)

1220

±120

kHz

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