MAX9720 Просмотр технического описания (PDF) - Maxim Integrated

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производитель

MAX9720

50mW, DirectDrive, Stereo Headphone Amplifier with SmartSense and Shutdown

Maxim Integrated 

50mW, DirectDrive, Stereo Headphone

Amplifier with SmartSense and Shutdown

ABSOLUTE MAXIMUM RATINGS

PGND to SGND .....................................................-0.3V to +0.3V

PVSS to SVSS .........................................................-0.3V to +0.3V

VDD to PGND or SGND ............................................-0.3V to +4V

PVSS and SVSS to PGND or SGND ..........................-4V to +0.3V

IN_, OUT_, and HPS to SGND .......(SVSS - 0.3V) to (VDD + 0.3V)

C1P to PGND ...............................(PGND - 0.3V) to (VDD + 0.3V)

C1N to PGND .............................(PVSS - 0.3V) to (PGND + 0.3V)

ALERT to PGND .......................................................-0.3V to +4V

MODE_ to PGND ........................................-0.3V to (VDD + 0.3V)

TIME to SGND ............................................-0.3V to (VDD + 0.3V)

Output Short Circuit to GND or VDD ...............................Continuous

Continuous Power Dissipation (TA = +70°C)

16-Bump UCSP (derate 8.2mW/°C above +70°C) .......659mW

16-Pin TSSOP (derate 9.4mW/°C above +70°C) .......754.7mW

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

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

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

Bump Temperature (soldering)

Reflow ...........................................................................+235°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 = VMODE1 = VMODE2 = 3.0V, PGND = SGND = 0V, RL = ∞, C1 = C2 = 2.2µF. TA = TMIN to TMAX, unless otherwise noted.

Typical values are at TA = +25°C.) (Note 1)

PARAMETER

GENERAL

Supply Voltage Range

Supply Current

Shutdown Supply Current

Turn-On/Turn-Off Time

CHARGE PUMP

Oscillator Frequency

HEADPHONE AMPLIFIERS

Voltage Gain

Gain Match

Total Output Offset Voltage

(Note 3)

Input Resistance

SYMBOL

CONDITIONS

VDD

IDD

ISHDN

tS

Inferred from PSRR test

Stereo mode

Mono mode (MODE1 = VDD, MODE2 = GND)

MODE1 = MODE2 = GND

fOSC

MAX9720A

AV

MAX9720B

∆AV

Between OUTL and OUTR

MAX9720A

VOS

MAX9720B

RIN

1.8V ≤ VDD ≤ 3.6V

(Note 3)

DC

MIN TYP MAX UNITS

1.8

3.6

V

5

8.4

mA

3

6

10

µA

250

µs

272 320 368

kHz

-1.02

-1

-0.98

V/V

-1.443 -1.415 -1.386

±1

%

-5

-0.8 +3.6

mV

-6.5

-1

+4.5

10

15

20

kΩ

76

92

Power-Supply Rejection Ratio

PSRR

VDD = 3.0V,

200mVP-P ripple

(Note 3)

fRIPPLE = 217Hz

fRIPPLE = 1kHz

fRIPPLE = 20kHz

92

dB

86

61

Output Power

POUT

THD+N = 1%, fIN =

1kHz, TA = +25°C

RL = 32Ω

RL = 16Ω

50

mW

32

50

2 _______________________________________________________________________________________

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