2.6W Stereo Audio Power Amplifiers and
DirectDrive Headphone Amplifiers
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (V , PV , HPV , CPV to GND)..........+6V
DD
Continuous Input Current (All Other Pins) ........................±ꢁ±mA
DD
DD
DD
GND to PGND.....................................................................±±.ꢀV
Continuous Power Dissipation (T = +7±°C, multilayer board)
ꢁ8-Pin Thin QFN (derate ꢁꢀ.8mW/°C above +7±°C) .19±±mW
A
CPV , C1N, V to GND .........................-6.±V to (GND + ±.ꢀV)
SS
SS
HPOUT_ to GND....................................................................±ꢀV
Junction-to-Case Thermal Resistance (θ
)
JC
Any Other Pin .............................................-±.ꢀV to (V + ±.ꢀV)
ꢁ8-Pin Thin QFN...........................................................ꢁ4°C/W
Junction Temperature......................................................+15±°C
Operating Temperature Range ...........................-4±°C to +85°C
Storage Temperature Range.............................-65°C to +15±°C
Lead Temperature (soldering, 1±s) .................................+ꢀ±±°C
DD
Duration of OUT_ Short Circuit to GND or PV ........Continuous
DD
Duration of OUT_+ Short Circuit to OUT_-.................Continuous
Duration of HPOUT_ Short Circuit to GND,
V
SS
or HPV .........................................................Continuous
DD
Continuous Current (PV , OUT_, PGND) ...........................1.7A
DD
Continuous Current (CPV , C1N, C1P, CPV , V , HPV ,
DD
SS SS
DD
HPOUT_).......................................................................85±mA
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
(V
DD
= PV
= CPV
= HPV
= 5V, V
= V
= V
= ±V, SHDN = V , C
= 1µF, C1 = Cꢁ = 1µF, speaker load
DD
DD
DD
GND
PGND
CPGND
DD
BIAS
terminated between OUT_+ and OUT_-, headphone load terminated between HPOUT_ and GND, V
= V
= V
= V
= ±V,
GAIN1
GAINꢁ
VOL
GAIN
T
A
= T
to T , unless otherwise noted. Typical values are at T = +ꢁ5°C.) (Note 1)
MAX A
MIN
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
GENERAL
Supply Voltage Range
V
, PV
Inferred from PSRR test
Inferred from PSRR test
HPS = GND, speaker mode, R = ∞
4.5
ꢀ.±
5.5
5.5
V
V
DD
DD
CPV
,
DD
Headphone Supply Voltage
Quiescent Supply Current
HPV
DD
14
7
ꢁ9
1ꢀ
5
L
9
I
mA
DD
HPS = V , headphone mode, R = ∞
DD
L
Shutdown Supply Current
Bias Voltage
I
SHDN = GND
±.ꢁ
µA
V
SHDN
V
1.7
1.8
1±
ꢁ±
6
1.9
BIAS
Switching Time
t
Gain or input switching
µs
SW
MAX975±
MAX9751/MAX9755
1±
ꢀ±
8.±
Amplifier inputs
(Note ꢁ)
Input Resistance
Turn-On Time
R
IN
kΩ
4.5
t
ꢁ5
ms
SON
SPEAKER AMPLIFIER (HPS = GND)
Measured
between OUT_+ MAX9751/MAX9755
and OUT_-,
MAX975±A/MAX975±B/
1
±.4
9±
15
6
Output Offset Voltage
V
mV
dB
OS
MAX975±C
T
= +ꢁ5°C
A
MAX975±A/MAX975±B/
MAX975±C/MAX9751
PV
or V
=
DD
DD
75
7ꢁ
4.5V to 5.5V
(T = +ꢁ5°C)
A
Power-Supply Rejection Ratio
(Note ꢀ)
MAX9755
9±
8±
55
PSRR
f = 1kHz, V
= ꢁ±±mV
P-P
RIPPLE
f = 1±kHz, V
= ꢁ±±mV
P-P
RIPPLE
2
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