MAX9723 データシートの表示（PDF） - Maxim Integrated

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MAX9723

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

Maxim Integrated 

MAX9723

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 connected

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

Output Offset Voltage

Input Resistance

BBR, BBL Input Bias Current

Power-Supply Rejection Ratio

SYMBOL

CONDITIONS

MIN TYP MAX UNITS

VDD

IDD

IDD_SHDN

tON

tOFF

TTHRES

THYST

No load

VSHDN = 0V

1.8

3.6

V

4

6.5

mA

5 8.5

µA

200

µs

35

µs

+143

°C

12

°C

Gain = 0dB,

MAX9723A/

Measured between MAX9723B

VOS

OUT_ and SGND

(Note 2)

Gain = +6dB,

MAX9723C/

MAX9723D

±0.7 ±4.5

mV

±0.8

±5

RIN

All volume levels

10

17

27

kΩ

IBIAS_BB

±10 ±100

nA

DC, VDD = 1.8V to 3.6V

73

90

f = 217Hz, 100mVP-P ripple,

VDD = 3.0V

87

PSRR (Note 2)

f = 1kHz, 100mVP-P ripple,

VDD = 3.0V

dB

86

f = 20kHz, 100mVP-P ripple,

VDD = 3.0V

61

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