MAX9877AERP Datasheet, PDF (13/31 Pages) Maxim Integrated Products – Low RF Susceptibility, Mono Audio Subsystem with DirectDrive Headphone Amplifier

Low RF Susceptibility, Mono Audio
Subsystem with DirectDrive Headphone Amplifier
Typical Operating Characteristics (continued)
(V_DD = PV_DD = 3.7V, V_GND = V_PGND = 0V. Single-ended inputs, preamp gain = 0dB, volume controls = 0dB, OSC = 00, BYPASS =
0, SHDN = 1. Speaker loads (Z_SPK) connected between OUT+ and OUT-. Headphone loads (R_HP) connected from HPL or HPR to
GND. Z_SPK = ∞, R_HP = ∞. C1 = C2 = C_BIAS = 1µF. T_A = +25°C, unless otherwise noted.)
POWER DISSIPATION
vs. OUTPUT POWER
350
300
250
R_HP = 16Ω
200
150
100
50
0
0
100
90
80
70
60
50
40
30
20
10
0
2.5
R_HP = 32Ω
V_DD = PV_DD = 3.7V
f_IN = 1kHz
P_OUT = P_HPL + P_HPR
50
100
150
OUTPUT POWER (mW)
OUTPUT POWER
vs. SUPPLY VOLTAGE
10% THD+N
f_IN = 1kHz
R_HP = 16Ω
1% THD+N
3.0 3.5 4.0 4.5 5.0 5.5
SUPPLY VOLTAGE (V)
POWER DISSIPATION
vs. OUTPUT POWER
250
200
R_HP = 16Ω
150
100
50
0
0
R_HP = 32Ω
V_DD = PV_DD = 3V
f_IN = 1kHz
P_OUT = P_HPL + P_HPR
50
100
150
OUTPUT POWER (mW)
OUTPUT POWER
vs. LOAD RESISTANCE
100
90
V_DD = PV_DD = 3.7V
f_IN = 1kHz
80
70
60
10% THD+N
50
40
30
20
10 1% THD+N
0
10 20 30 40 50 60 70 80 90 100
LOAD RESISTANCE (Ω)
OUTPUT POWER
vs. SUPPLY VOLTAGE
50
45
f_IN = 1kHz
R_HP = 32Ω
40
10% THD+N
35
30
25
20
1% THD+N
15
10
5
0
2.5 3.0 3.5 4.0 4.5 5.0 5.5
SUPPLY VOLTAGE (V)
OUTPUT POWER
vs. LOAD RESISTANCE
100
90
V_DD = PV_DD = 3V
f_IN = 1kHz
80
70
60
10% THD+N
50
40
30
20
10 1% THD+N
0
10 20 30 40 50 60 70 80 90 100
LOAD RESISTANCE (Ω)
OUTPUT POWER
vs. LOAD RESISTANCE
100
90
V_DD = PV_DD = 3V
OSC = 10
80
f_IN = 1kHz
1% THD+N
70
60
C1 = C2 = 2.2µF
50
40
30
20
10 C1 = C2 = 0.47µF
0
10 20 30 40 50 60 70 80 90 100
LOAD RESISTANCE (Ω)
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
0
-10
V_DD = PV_DD = 3.7V
-20
V_RIPPLE = 100mV_P-P
R_HP = 32Ω
-30
INPUTS AC-COUPLED TO GND
-40
-50
-60
HPR
-70
-80
-90
-100
-110
HPL
-120
10
100
1k
10k
100k
FREQUENCY (Hz)
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