Rainbow Electronics MAX9877 - Manual (Page 13)

MAX9877
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.)
Low RF Susceptibility, Mono Audio
Subsystem with DirectDrive Headphone Amplifier
______________________________________________________________________________________ 13
OUTPUT POWER
vs. SUPPLY VOLTAGE
MAX9877 toc46
SUPPLY VOLTAGE (V)
OUTPUT POWER (mW)
5.0 4.5 4.0 3.5 3.0
50
0
10
20
30
40
45
5
15
25
35
2.5 5.5
f IN = 1kHz
R HP = 32 Ω
10% THD+N
1% THD+N
OUTPUT POWER
vs. SUPPLY VOLTAGE
MAX9877 toc47
SUPPLY VOLTAGE (V)
OUTPUT POWER (mW)
5.0 4.5 4.0 3.5 3.0
100
0
20
40
60
80
90
10
30
50
70
2.5 5.5
f IN = 1kHz
R HP = 16 Ω
10% THD+N
1% THD+N
OUTPUT POWER
vs. LOAD RESISTANCE
MAX9877 toc48
LOAD RESISTANCE ( Ω)
OUTPUT POWER (mW)
100
0
20
40
60
80
90
10
30
50
70
10 40 70 100 20 50 80 30 60 90
V
DD
= PV
DD
= 3.7V
f IN = 1kHz
10% THD+N
1% THD+N
OUTPUT POWER
vs. LOAD RESISTANCE
MAX9877 toc49
LOAD RESISTANCE ( Ω)
OUTPUT POWER (mW)
100
0
20
40
60
80
90
10
30
50
70
10 40 70 100 20 50 80 30 60 90
V DD = PV DD = 3V
f IN = 1kHz
10% THD+N
1% THD+N
OUTPUT POWER
vs. LOAD RESISTANCE
MAX9877 toc50
LOAD RESISTANCE ( Ω)
OUTPUT POWER (mW)
100
0
20
40
60
80
90
10
30
50
70
10 40 70 100 20 50 80 30 60 90
V DD = PV DD = 3V
OSC = 10
f
IN = 1kHz
1% THD+N
C1 = C2 = 2.2 μF
C1 = C2 = 0.47 μF
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
MAX9877 toc51
FREQUENCY (Hz)
PSRR (dB)
0
-120
-80
-60
-40
-20
-10
-90
-100
-110
-70
-50
-30
10 100 1k 10k 100k
V DD = PV DD = 3.7V
V RIPPLE = 100mV P-P
R HP = 32 Ω
INPUTS AC-COUPLED TO GND
HPR
HPL
POWER DISSIPATION
vs. OUTPUT POWER
MAX9877 toc44
OUTPUT POWER (mW)
POWER DISSIPATION (mW)
350
0
250
50
150
300
100
200
0 150 100 50
V DD = PV DD = 3.7V
f IN = 1kHz
P OUT = P HPL + P HPR
R HP = 32 Ω
R HP = 16 Ω
POWER DISSIPATION
vs. OUTPUT POWER
MAX9877 toc45
OUTPUT POWER (mW)
POWER DISSIPATION (mW)
250
0
50
150
100
200
0 150 100 50
V DD = PV DD = 3V
f IN = 1kHz
P OUT = P HPL + P HPR
R HP = 32 Ω
R HP = 16 Ω