MAX9723(2005) 데이터 시트보기 (PDF) - Maxim Integrated

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MAX9723
(Rev.:2005)

Stereo DirectDrive Headphone Amplifier with BassMax, Volume Control, and I2C

Maxim Integrated 

Stereo DirectDrive Headphone Amplifier with

BassMax, Volume Control, and I2C

ABSOLUTE MAXIMUM RATINGS

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

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

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

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

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

PVSS, SVSS to PGND ................................................+0.3V to -4V

IN_ to SGND ..................................(SVSS - 0.3V) to (VDD + 0.3V)

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

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

OUT_ to SGND ............................................................-3V to +3V

BB_ to SGND...............................................................-2V to +2V

Duration of OUT_ Short Circuit to _GND ....................Continuous

Continuous Current Into/Out of:

VDD, C1P, PGND, C1N, PVSS, SVSS, or OUT_ ..............±0.85A

Any Other Pin.................................................................±20mA

Continuous Power Dissipation (TA = +70°C)

4 x 4 UCSP (derate 8.2mW/°C above +70°C) ...........659.2mW

16-Pin Thin QFN (derate 16.9mW/°C above +70°C) ....1349mW

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

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

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

Bump Temperature (soldering)

Reflow ...........................................................................+230°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 = SHDN = 3V, PGND = SGND = 0V, C1 = C2 = 1µF, BB_ = 0V. gain = 0dB, maximum volume, BassMax disabled. Load connect-

ed between OUT_ and SGND where specified. TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)

PARAMETER

GENERAL

Supply Voltage Range

Quiescent Supply Current

Shutdown Supply Current

Turn-On Time

Turn-Off Time

Thermal Shutdown Threshold

Thermal Shutdown Hysteresis

HEADPHONE AMPLIFIER

SYMBOL

CONDITIONS

VDD

IDD

IDD_SHDN

tON

tOFF

TTHRES

THYST

No load

V SHDN = 0V

MIN TYP MAX UNITS

1.8

3.6

V

4

6.5

mA

5

8.5

µA

200

µs

35

µs

+143

°C

12

°C

Output Offset Voltage

Gain = 0dB,

MAX9723A/

Measured between MAX9723B

VOS OUT_ and SGND

(Note 2)

Gain = +6dB,

MAX9723C/

MAX9723D

±0.7 ±4.5

mV

±0.8

±5

Input Resistance

BBR, BBL Input Bias Current

RIN

All volume levels

IBIAS_BB

10

17

27

kΩ

±10 ±100

nA

DC, VDD = 1.8V to 3.6V

73

90

f = 217Hz, 100mVP-P ripple,

87

VDD = 3.0V

Power-Supply Rejection Ratio

PSRR (Note 2)

dB

f = 1kHz, 100mVP-P ripple,

86

VDD = 3.0V

f = 20kHz, 100mVP-P ripple,

61

VDD = 3.0V

2 _______________________________________________________________________________________

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