max9712eub Maxim Integrated Products, Inc., max9712eub Datasheet - Page 4

• Manufacturer Part Number: max9712eub
• Description: Max9712 500mw, Low Emi, Filterless, Class D Audio Amplifier
• Manufacturer: Maxim Integrated Products, Inc.

500mW, Low EMI, Filterless,
Class D Audio Amplifier
(V
4
DD
0.001
0.001
0.01
0.01
100
100
_______________________________________________________________________________________
0.1
0.01
0.1
10
10
0.1
1
10
= 3.3V, V
1
1
TOTAL HARMONIC DISTORTION PLUS NOISE
TOTAL HARMONIC DISTORTION PLUS NOISE
TOTAL HARMONIC DISTORTION PLUS NOISE
0
0
0
V
R
V
NO INPUT CAPACITORS
V
R
V
R
f = 1kHz
P
DIFFERENTIAL INPUT
DD
L
CM
DD
L
DD
L
OUT
= 8Ω
= 8Ω
= 8Ω
= 2.5V
DIFFERENTIAL
INPUT
vs. COMMON-MODE VOLTAGE
= 3.3V
= 1.25V
= 3.3V
0.1
0.5
= 300mW
0.1
SYNC
f = 1kHz
COMMON-MODE VOLTAGE (V)
vs. OUTPUT POWER
vs. OUTPUT POWER
f = 10kHz
OUTPUT POWER (W)
OUTPUT POWER (W)
1.0
0.2
= GND, T
0.2
1.5
SINGLE-ENDED
f = 100Hz
0.3
0.3
A
2.0
= +25°C, unless otherwise noted.)
0.4
0.4
2.5
0.5
0.5
3.0
0.001
0.001
0.01
Typical Operating Characteristics (continued)
100
0.01
100
0.1
100
10
0.1
10
90
80
70
60
50
40
30
20
10
1
1
0
TOTAL HARMONIC DISTORTION PLUS NOISE
TOTAL HARMONIC DISTORTION PLUS NOISE
0
0
0
V
R
V
R
FFM
(SYNC FLOATING)
V
f = 1kHz
DD
L
DD
L
EFFICIENCY vs. OUTPUT POWER
DD
= 8Ω
= 16Ω
0.1
= 3.3V
= 5V
= 5V
0.2
0.1
vs. OUTPUT POWER
0.2
vs. OUTPUT POWER
f = 10kHz
f = 1kHz
OUTPUT POWER (W)
OUTPUT POWER (W)
OUTPUT POWER (W)
R
0.4
0.2
L
0.3
= 8Ω
0.4
SSM
(SYNC = V
FFM
(SYNC = GND)
0.6
0.3
f = 100Hz
0.5
R
DD
0.8
0.4
L
)
= 16Ω
0.6
0.7
1.0
0.5
0.001
0.001
0.01
0.01
100
100
0.1
0.1
100
10
10
90
80
70
60
50
40
30
20
10
1
1
0
TOTAL HARMONIC DISTORTION PLUS NOISE
TOTAL HARMONIC DISTORTION PLUS NOISE
0
0
0
V
R
SYNC = 3.3V
50% DUTY CYCLE
SQUARE WAVE
V
R
f = 1kHz
DD
L
DD
L
V
f = 1kHz
EFFICIENCY vs. OUTPUT POWER
= 8Ω
DD
= 6Ω
f
SYNC
= 3.3V
= 3.3V
0.1
= 3.3V
0.1
f = 10kHz
= 800kHz
0.1
vs. OUTPUT POWER
vs. OUTPUT POWER
P-P
OUTPUT POWER (W)
OUTPUT POWER (W)
OUTPUT POWER (W)
0.2
f
SYNC
R
L
0.2
= 6Ω
f = 100Hz
= 1.4MHz
0.2
0.3
f
SYNC
R
0.3
L
= 8Ω
0.4
= 2MHz
R
0.3
L
= 16Ω
0.4
0.5
0.6
0.4
0.5