MAX9775 datasheet(2/37 Pages) MAXIM

2 / 37 page

2 x 1.5W, Stereo Class D Audio Subsystem

with DirectDrive Headphone Amplifier

_______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VDD = PVDD = CPVDD = 3.3V, GND = PGND = CPGND = 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)

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

CPVDD to CPGND ....................................................................6V

CPVSS to CPGND .....................................................-6V to +0.3V

VSS to CPGND..........................................................-6V to +0.3V

C1N .......................................(CPVSS - 0.3V) to (CPGND + 0.3V)

C1P.......................................(CPGND - 0.3V) to (CPVDD + 0.3V)

HPL, HPR to GND...................(CPVSS - 0.3V) to (CPVDD + 0.3V)

GND to PGND and CPGND................................................±0.3V

VDD to PVDD and CPVDD....................................................±0.3V

SDA, SCL to GND.....................................................-0.3V to +6V

All other pins to GND..................................-0.3V to (VDD + 0.3V)

Continuous Current In/Out of PVDD, PGND, CPVDD, CPGND,

OUT__, HPR, and HPL..................................................±800mA

Continuous Input Current CPVSS ......................................260mA

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

Duration of Short Circuit Between

OUT_+ and OUT_- ..................................................Continuous

Duration of HP_, OUT_ Short Circuit to

GND or PVDD ..........................................................Continuous

Continuous Power Dissipation (TA = +70°C)

32-Bump (3mm x 3mm) UCSP Multilayer Board

(derate 17.0mW/°C above +70°C) ...........................1360.5mW

32-Pin (5mm x 5mm) TQFN Single-Layer Board

(derate 21.3mW/°C above +70°C) ...........................1702.1mW

32-Pin TQFN Multilayer Board (derate 34.5mW/°C

above +70°C)...........................................................2758.6mW

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

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

GENERAL

Supply Voltage Range

VDD, PVDD,

CPVDD

Inferred from PSRR test

2.7

5.5

Output mode 1, 6, 11 (Rx mode)

6.3

Output mode 4, 9, 14 (HP mode)

12.6

Output mode 2, 7, 12 (SP mode)

9.5

Quiescent Current (Mono)

IDD

Output mode 3, 8, 13 (SP and HP mode)

12.9

Output mode 1, 6, 11 (Rx mode)

Output mode 4, 9, 14 (HP mode)

Output mode 2, 7, 12 (SP mode)

16.5

Quiescent Current (Stereo)

IDD

Output mode 3, 8, 13 (SP and HP mode)

Mute Current

IMUTE

Current in mute (low power)

4.7

Hard shutdown

SHDN = GND

0.1

Shutdown Current

ISHDN

Soft shutdown

See the I2C Interface

section

8.5

µA

Turn-On Time

tON

Time from shutdown or power-on to full

operation

B and C pair inputs, TA = +25°C,

VOL = max

17.5

41.0

Ω

Input Resistance

RIN

A pair inputs, TA = +25°C, +20dB

3.5

5.5

8.0

Ω

Common-Mode Rejection Ratio

CMRR

TA = +25°C, fIN = 1kHz (Note 2)

Input DC Bias Voltage

VBIAS

IN_ inputs

1.12

1.25

1.38

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