MAX9725CETC datasheet(2/17 Pages) MAXIM

Part #	MAX9725CETC

Description	1V, Low-Power, DirectDrive, Stereo Headphone Amplifier with Shutdown

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Manufacturer	MAXIM [Maxim Integrated Products]

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1V, Low-Power, DirectDrive, Stereo Headphone

Amplifier with Shutdown

2

_______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

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.

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

(MAX9725A–MAX9725D)..............(VSS - 0.3V) to (VDD + 0.3V)

OUTR, OUTL to SGND

(MAX9725E) ..................................(VSS - 0.3V) to (VDD + 0.3V)

INR, INL to SGND (MAX9725E)...................................-4V to +4V

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

ELECTRICAL CHARACTERISTICS (MAX9725A–MAX9725D)

(VDD = 1.5V, VPGND = VSGND = 0V, VSHDN = 1.5V, VSS = VPVSS, C1 = C2 = 1µF, CIN = 1µF, RL = ∞, TA = TMIN to TMAX, unless other-

wise noted. Typical values are at TA = +25

°C.) (See the Functional Diagrams.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Supply Voltage Range

VDD

Guaranteed by PSRR test

0.9

1.8

V

Quiescent Supply Current

IDD

Both channels active

2.1

3.3

mA

TA = +25

°C

0.6

10

Shutdown Current

ISHDN

VSHDN = 0V

TA = -40

°C to +85°C30

µA

Shutdown to Full Operation

tON

180

µs

VIH

VDD = 0.9V to 1.8V

0.7 x VDD

SHDN Thresholds

VIL

VDD = 0.9V to 1.8V

0.3 x VDD

V

SHDN Input Leakage Current

ILEAK

VDD = 0.9V to 1.8V (Note 2)

±1µA

CHARGE PUMP

Oscillator Frequency

fOSC

493

580

667

kHz

AMPLIFIERS

MAX9725A

-2.04

-2.00

-1.96

MAX9725B

-1.53

-1.5

-1.47

MAX9725C

-1.02

-1.00

-0.98

Voltage Gain

AV

MAX9725D

-4.08

-4.00

-3.92

V/V

Gain Match

ΔAV

±0.5

%

MAX9725A/MAX9725D

±0.3

±1.05

MAX9725B

±0.45

±1.58

Total Output Offset Voltage

VOS

Input AC-coupled,

RL = 32

Ω to GND,

TA = +25

°C

MAX9725C

±0.6

±2.1

mV

Input Resistance

RIN

15

25

35

k

Ω

VDD = 0.9V to 1.8V, TA = +25

°C60

80

fIN = 1kHz

70

Power-Supply Rejection Ratio

PSRR

100mVP-P ripple

fIN = 20kHz

62

dB

RL = 32

Ω

10

20

VDD = 1.5V

RL = 16

Ω

25

VDD = 1.0V, RL = 32

Ω

7

Output Power (Note 3)

POUT

VDD = 0.9V, RL = 32

Ω

6

mW

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