MAX9875 View Datasheet(PDF) - Maxim Integrated
Part Name
Description
MFG CO.
MAX9875
Maxim Integrated
MAX9875 Datasheet PDF : 30 Pages
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Low RF Susceptibility, Mono Audio
Subsystem with DirectDrive Headphone Amplifier
Typical Operating Characteristics (continued)
(VDD = VPVDD = 3.7V, VGND = VPGND = 0V. Single-ended inputs, preamp gain = 0dB, volume controls = 0dB, OSC = 00, SHDN = 1.
Speaker loads (ZSPK) connected between OUT+ and OUT-. Headphone loads (RHP) connected from HPL or HPR to GND. ZSPK =
∞, RHP = ∞. C1 = C2 = CBIAS = 1µF. TA = +25°C, unless otherwise noted.)
OUTPUT SPECTRUM
0
VDD = VPVDD = 3.7V
-20
fIN = 1kHz
RHP = 32Ω
-40
OUTPUT SPECTRUM
0
VDD = VPVDD = 3.7V
-20
fIN = 1kHz
RHP = 16Ω
-40
-60
-60
-80
-80
-100
-100
-120
-140
0
5
10
15
20
FREQUENCY (kHz)
-120
-140
0
5
10
15
20
FREQUENCY (kHz)
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
-110
-120
10
CROSSTALK vs. FREQUENCY
VDD = VPVDD = 3.7V
VINA_ = 1VP-P
RHP = 16Ω
HPR TO HPL
HPL TO HPR
100
1k
10k
100k
FREQUENCY (Hz)
COMMON-MODE REJECTION RATIO
vs. FREQUENCY
80
70
+9dB
60
50
0dB
40
30
20
10
0
10
+20dB
VDD = VPVDD = 3.7V
CMRR = 20log(ADM/ACM)
100
1k
10k
100k
FREQUENCY (Hz)
HARDWARE SHUTDOWN RESPONSE
SOFTWARE SHUTDOWN
ON- AND OFF-REPSONSE
VBIAS
500mV/div
VBIAS
500mV/div
HPL
500mV/div
HPL
500mV/div
HPR
500mV/div
HPR
500mV/div
20ms/div
20ms/div
14 ______________________________________________________________________________________
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