2.6W Stereo Audio Power Amplifiers and
DirectDrive Headphone Amplifiers
ABSOLUTꢀ MAXIMUM RATINGS
Supply Voltage (V , PV , HPV , CPV
to GND)..........+6V
Continuous Current (CPV , C1N, C1P, CPV , V , HPV
,
DD
DD
DD
DD
DD
SS SS
DD
GND to PGND..................................................................... 0.3V
CPV , C1N, V to GND .........................-6.0V to (GND + 0.3V)
HPOUT_ to GND.................................................................... 3V
HPOUT_).......................................................................850mA
Continuous Input Current (All Other Pins) ........................ 20mA
Continuous Power Dissipation (T = +70°C)
A
SS
SS
Any Other Pin .............................................-0.3V to (V + 0.3V)
28-Pin Thin QFN (derate 20.8mW/°C above +70°C) ..1667mW
28-Pin TSSOP-EP (derate 23.8mW/°C above +70°C).1904mW
Junction Temperature......................................................+150°C
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°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
or HPV .........................................................Continuous
SS
DD
Continuous Current (PV , OUT_, PGND) ...........................1.7A
DD
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.
ꢀLꢀCTRICAL CHARACTꢀRISTICS
(V
= PV
= CPV
= HPV
= 5V, GND = PGND = CPGND = 0V, SHDN = V , C
= 1µF, C1 = C2 = 1µF, speaker load ter-
BIAS
DD
DD
DD
DD
DD
minated between OUT_+ and OUT_-, headphone load terminated between HPOUT_ and GND, MAX9750: GAIN1 = GAIN2 = VOL =
= IN1/2 = GND, T = T to T , unless otherwise noted. Typical values are
R = 33kΩ = GND, MAX9751/MAX9755: GAIN = V
L
DD
A
MIN
MAX
at T = +25°C.) (Note 1)
A
PARAMꢀTꢀR
GꢀNꢀRAL
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Supply Voltage Range
V
, PV
Inferred from PSRR test
Inferred from PSRR test
4.5
3
5.5
5.5
V
V
DD
DD
CPV
,
DD
Headphone Supply Voltage
Quiescent Supply Current
HPV
DD
HPS = GND, speaker mode, R = ∞
14
7
29
13
5
L
I
mA
DD
HPS = V , headphone mode, R = ∞
DD
L
Shutdown Supply Current
Bias Voltage
I
SHDN = GND
0.2
1.8
10
20
25
µA
V
SHDN
V
1.7
10
1.9
BIAS
Switching Time
t
Gain or input switching
Amplifier inputs (Note 2)
µs
kΩ
ms
SW
Input Resistance
Turn-On Time
R
30
6
IN
t
SON
SPꢀAKꢀR AMPLIFIꢀR (HPS = GND)
Output Offset Voltage
V
Measured between OUT_+ - OUT_-
PV or V = 4.5V to 5.5V (T = +25°C)
0.4
mV
dB
OS
75
90
80
55
DD
DD
A
Power-Supply Rejection Ratio
(Note 3)
PSRR
f = 1kHz, V = 200mV
RIPPLE P-P
f = 10kHz, V
= 200mV
P-P
RIPPLE
2
_______________________________________________________________________________________
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