MAX9879(2009) 查看數據表（PDF） - Maxim Integrated

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MAX9879
(Rev.:2009)

Stereo Class D Audio Subsystem with DirectDrive Headphone Amplifier

Maxim Integrated 

Stereo Class D Audio Subsystem

with DirectDrive Headphone Amplifier

ABSOLUTE MAXIMUM RATINGS

VDD, PVDDL, PVDDR to GND ..................................-0.3V to +6V

VDD, PVDDL to PVDDR .........................................-0.3V to +0.3V

VDD to PVDDL .......................................................-0.3V to +0.3V

VCCIO to GND...........................................................-0.3V to +4V

PGNDL, PGNDR, to GND......................................-0.3V to +0.3V

PGNDL to PGNDR.................................................-0.3V to +0.3V

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

C1N to GND ................................................(VSS - 0.3V) to +0.3V

C1P to GND ...........................................-0.3V to (PVDD_ + 0.3V)

HPL, HPR to VSS (Note 1).............................-0.3V to the lower of

(VDD - VSS + 0.3V) or +9V

HPL, HPR to VDD (Note 2) .........................+0.3V to the higher of

(VSS - PVDD_ - 0.3V) or -9V

INA1, INA2, INB1, INB2, BIAS..................................-0.3V to +4V

SDA, SCL, SHDN......................................................-0.3V to +4V

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

Continuous Current In/Out of PVDD_, PGND_, OUT_ ....±800mA

Continuous Current In/Out of HPR and HPL .....................140mA

Continuous Current In/Out of RXIN+ and RXIN- ...............150mA

Continuous Input Current VSS...........................................100mA

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

Duration of OUT_ Short Circuit

to PGND_ or PVDD_...............................................Continuous

Duration of Short Circuit

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

Duration of HP_ Short Circuit to GND or PVDDL........Continuous

Continuous Power Dissipation (TA = +70°C)

5x6 UCSP Multilayer Board

(derate 16.5mW/°C above +70°C) .............................1250mW

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

Note 1: HPR and HPL should be limited to no more than 9V above VSS, or above PVDD + 0.3V, whichever limits first.

Note 2: HPR and HPL should be limited to no more than 9V below PVDD, or below VSS - 0.3V, whichever limits first.

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 = VPVDDL = VPVDDR = 3.7V, VCCIO = 1.8V, VGND = VPGNDL = VPGNDR = 0. Single-ended inputs, preamp = 0, volume controls =

0dB, BYPASS = 0, SHDN = 1. Speaker loads connected between OUT_+ and OUT_-. Headphone loads connected from HPL or HPR to

GND. RSPK = ∞, RHP = ∞. C1 = C2 = CBIAS = 1µF. TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.)

(Notes 3, 4)

PARAMETER

Analog Supply Voltage Range

Digital Supply Voltage Range

Quiescent Current

Shutdown Current

SYMBOL

VDD,

PVDDR

PVDDL

VCCIO

IDD

ISHDN

CONDITIONS

Guaranteed by PSRR Test

HP mode, RHP = ∞

Stereo SPK mode, RSPK = ∞

Mono SPK mode, RSPK = ∞

Stereo SPK + HP mode, RHP= RSPK = ∞

ISHDN = IDD + IPVDDR +

IPVDDL + ICC; TA = +25°C

Software

shutdown

Hardware

shutdown

MIN TYP MAX UNITS

2.7

5.5

V

1.7

3.6

V

5.6

9.0

9.8

18

mA

6.6

10

13.2

24

5

10

µA

0.1

1

Turn-On Time

tON

Time from shutdown or power-on to full

operation

10

ms

Input Resistance

Maximum Input Signal Swing

RIN

TA = +25°C, preamp = 0dB or +5.5dB

TA = +25°C, preamp = +20dB

Preamp = 0

Preamp = +5.5dB

Preamp = +20dB

11

21

31

3

5.5

8

2.3

1.2

0.230

kΩ

VP-P

2 _______________________________________________________________________________________

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