2.6W Stereo Audio Power Amplifiers and
DirectDrive Headphone Amplifiers
ꢀLꢀCTRICAL CHARACTꢀRISTICS (continued)
(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 =
R = 33kΩ = GND, MAX9751/MAX9755: GAIN = V
= IN1/2 = GND, T = T
to T
, unless otherwise noted. Typical values are
L
DD
A
MIN
MAX
at T = +25°C.) (Note 1)
A
PARAMꢀTꢀR
SYMBOL
CONDITIONS
MIN
0.65
1.2
TYP
1.4
0.8
2.3
1.5
MAX
UNITS
MAX9750A/
MAX9750B/
MAX9751/
MAX9755
R = 8Ω
L
MAX9750C
MAX9750A/
MAX9750B/
MAX9751/
MAX9755
THD+N = 1%,
Output Power
P
f = 1kHz, T
=
R = 4Ω
L
W
OUT
A
+25°C
MAX9750C
MAX9750A/
MAX9750B/
MAX9751/
MAX9755
2.6
R = 3Ω
L
MAX9750C
2.2
0.01
0.02
90
R = 8Ω, P
= 500mW, f = 1kHz
= 1W, f = 1kHz
L
OUT
OUT
OUT
Total Harmonic Distortion Plus
Noise
THD+N
SNR
%
R = 4Ω, P
L
Signal-to-Noise Ratio
Noise
R = 8Ω, P
L
= 1W, BW = 22Hz to 22kHz
dB
V
BW = 22Hz to 22kHz, A-weighted
No sustained oscillations
80
µV
RMS
n
Capacitive-Load Drive
C
200
75
pF
L
L to R, R to L, f = 10kHz
Crosstalk
Slew Rate
dB
Any unselected input to any active input,
f = 10kHz (MAX9751)
60
SR
1.4
9
V/µs
GAIN1 = 0, GAIN2 = 0
GAIN1 = 1, GAIN2 = 0
10.5
12
MAX9750A
GAIN1 = 0, GAIN2 = 1
GAIN1 = 1, GAIN2 = 1
GAIN1 = 0, GAIN2 = 0
GAIN1 = 1, GAIN2 = 0
13.5
15
16.5
18
MAX9750B
Gain (Maximum Volume Setting)
A
dB
VMAX(SPKR)
GAIN1 = 0, GAIN2 = 1
GAIN1 = 1, GAIN2 = 1
GAIN1 = 0, GAIN2 = 0
19.5
6
GAIN1 = 1, GAIN2 = 0
MAX9750C
7.5
GAIN1 = 0, GAIN2 = 1
9
GAIN1 = 1, GAIN2 = 1
10.5
9
GAIN = 1
GAIN = 0
Gain (MAX9751/MAX9755)
A
dB
V
10.5
_______________________________________________________________________________________
3
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
