MAX9721 View Datasheet(PDF) - Maxim Integrated

Part Name

Description

Manufacturer

MAX9721

1V, Fixed-Gain, DirectDrive, Stereo Headphone Amplifier with Shutdown

Maxim Integrated 

1V, Fixed-Gain, DirectDrive, Stereo Headphone

Amplifier with Shutdown

ABSOLUTE MAXIMUM RATINGS

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

VDD to SGND or PGND ............................................-0.3V to +2V

VSS to PVSS ...........................................................-0.3V to +0.3V

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

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

VSS, PVSS to GND ....................................................+0.3V to -2V

OUTR, OUTL, INR, INL to SGND .....(VSS - 0.3V) to (VDD + 0.3V)

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

Output Short-Circuit Current ......................................Continuous

Continuous Power Dissipation (TA = +70°C)

12-Bump UCSP (derate 6.5mW/°C above 70°C) ......518.8mW

12-Pin Thin QFN (derate 16.9mW/°C above 70°C) .1349.1mW

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

Operating Temperature Range ...........................-40°C to +85°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 = 1.5V, PGND = SGND = 0V, VSHDN = 1.5V, VSS = PVSS, C1 = C2 = 1µF, CIN = 1µF, RL = ∞, TA = TMIN to TMAX, unless otherwise

noted. Typical values are at TA = +25°C.) (See the Functional Diagram.)

PARAMETER

Supply Voltage Range

Quiescent Supply Current

Shutdown Current

Shutdown to Full Operation

SHDN Thresholds

SHDN Input Leakage Current

CHARGE PUMP

Oscillator Frequency

AMPLIFIERS

Voltage Gain

Gain Match

Total Output Offset Voltage

Input Resistance

Power-Supply Rejection Ratio

Output Power (Note 2)

Total Harmonic Distortion Plus

Noise

SYMBOL

CONDITIONS

VDD Guaranteed by PSRR test

IDD Both channels active

ISHDN VSHDN = 0V

TA = +25°C

TA = -40°C to +85°C

tON

VIH VDD = 0.9V to 1.8V

VIL VDD = 0.9V to 1.8V

ILEAK VDD = 0.9V to 1.8V (Note 1)

fOSC

AV

∆AV

VOS

RIN

PSRR

POUT

THD+N

MAX9721A

MAX9721B

MAX9721C

Input AC-coupled,

RL = 32Ω to GND

MAX9721A

MAX9721B

MAX9721C

VDD = 0.9V to 1.8V, TA = +25°C

100mVP-P ripple

fIN = 1kHz

fIN = 20kHz

VDD = 1.5V

RL = 32Ω

RL = 16Ω

VDD = 1.0V, RL = 32Ω

VDD = 0.9V, RL = 32Ω

RL = 32Ω, POUT = 12mW, f = 1kHz

RL = 16Ω, POUT = 15mW, f = 1kHz

MIN TYP MAX

0.9

1.8

2.2

5

1.0

10

30

180

0.7 x VDD

0.3 x VDD

±1

UNITS

V

mA

µA

µs

V

µA

493

580

667

kHz

2.04 -2.00 -1.96

-1.53 -1.5 -1.47 V/V

-1.02 -1.00 -0.98

±0.5

%

±0.9 ±3.8

±1.3 ±5.7 mV

±1.8 ±7.6

15

25

35

kΩ

60

80

70

dB

62

10

20

25

mW

7

6

0.006

%

0.015

2 _______________________________________________________________________________________

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