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 =
= 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
SYMBOL
CONDITIONS
MIN
70
TYP
MAX
UNITS
mV
HꢀADPHONꢀ AMPLIFIꢀR (HPS = V
Output Offset Voltage
)
DD
V
T
= +25°C
2
75
73
63
50
7
OS
A
HPV
= 3V to 5.5V, T = +25°C
A
DD
Power-Supply Rejection Ratio
(Note 3)
PSRR
dB
f = 1kHz, V
= 200mV
P-P
RIPPLE
f = 10kHz, V
= 200mV
P-P
RIPPLE
THD+N = 1%,
f = 1kHz,
R = 32Ω
L
40
Output Power
P
mW
OUT
R = 16Ω
L
110
T
A
= +25°C
R = 32Ω, P
= 20mW, f = 1kHz
= 75mW, f = 1kHz
= 50mW,
0.007
0.03
L
OUT
Total Harmonic Distortion Plus
Noise
THD+N
SNR
%
R = 16Ω, P
L
OUT
R = 32Ω, P
L
OUT
Signal-to-Noise Ratio
95
dB
BW = 22Hz to 22kHz
Noise
V
BW = 22Hz to 22kHz
12
200
88
µV
RMS
n
Capacitive-Load Drive
C
No sustained oscillations
L to R, R to L, f = 10kHz
pF
L
Crosstalk
dB
Any unselected input to any active input,
f = 10kHz (MAX9751)
88
Slew Rate
ESD
SR
0.4
8
V/µs
kV
ESD
IEC air discharge
GAIN2 = GAIN = 1, GAIN1 = X
GAIN2 = GAIN = 0, GAIN1 = X
0
Gain
A
dB
V
3
CHARGꢀ PUMP
Charge-Pump Frequency
VOLUMꢀ CONTROL (MAX9750_)
VOL Input Impedance
VOL Input Hysteresis
f
500
550
600
kHz
OSC
R
100
10
MΩ
VOL
mV
0.858 x
Full Mute Input Voltage
(Note 4)
V
HPV
DD
Channel Matching
A = -25dB to +13.5dB
V
0.2
dB
BꢀꢀP INPUT (MAX9750_)
Beep Signal Minimum Amplitude
Beep Signal Minimum Frequency
V
0.8
V
P-P
BEEP
f
200
Hz
BEEP
4
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MAXIM [ MAXIM INTEGRATED PRODUCTS ]
