max9746 Maxim Integrated Products, Inc., max9746 Datasheet - Page 4

• Manufacturer Part Number: max9746
• Description: Max9746 1.2w, Low-emi, Filterless, Class D Audio Amplifier
• Manufacturer: Maxim Integrated Products, Inc.

1.2W, Low-EMI, Filterless,
Class D Audio Amplifier
(V
4
DD
0.001
0.01
0.001
100
_______________________________________________________________________________________
0.1
0.01
10
= 3.3V, SYNC = V
0.1
1
10
1
TOTAL HARMONIC DISTORTION PLUS NOISE
TOTAL HARMONIC DISTORTION PLUS NOISE
10
0
V
R
V
R
DD
L
DD
L
= 8Ω
0.1
= 8Ω
= +3.3V
P
= 3.3V
OUT
0.001
0.01
100
0.2
100
0.1
= 300mW
vs. OUTPUT POWER
10
1
OUTPUT POWER (W)
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY
FREQUENCY (Hz)
0
f
0.3
IN
V
f
P
R
DIFFERENTIAL INPUT
IN
= 1kHz
DD
OUT
L
= 1kHz
= 8Ω
DD
vs. COMMON-MODE VOLTAGE
0.4
= 3.3V
1k
f
= 500mW
IN
0.5
(SSM), T
P
= 100Hz
COMMON-MODE VOLTAGE (V)
OUT
0.5
= 125mW
1.0
10k
0.6
f
IN
= 10kHz
A
0.7 0.8
= +25°C, unless otherwise noted.)
1.5
100k
2.0
0.001
0.001
0.01
100
0.01
0.1
10
0.1
10
1
1
TOTAL HARMONIC DISTORTION PLUS NOISE
TOTAL HARMONIC DISTORTION PLUS NOISE
2.5
10
0
V
R
P
V
R
DD
L
OUT
DD
L
SYNC = FLOAT
SYNC = GND
= 8Ω
= 8Ω
= +3.3V
0.1
= 3.3V
= 125mW
100
vs. OUTPUT POWER
OUTPUT POWER (W)
vs. FREQUENCY
0.2
FREQUENCY (Hz)
FFM (GND)
SSM (V
0.3
1k
SYNC = V
DD
Typical Operating Characteristics
)
0.4
DD
10k
0.5
100
90
80
70
60
50
40
30
20
10
0
100k
0.6
0
0.1
0.001
0.001
0.01
0.01
100
100
0.1
0.1
10
10
vs. OUTPUT POWER
1
1
OUTPUT POWER (W)
TOTAL HARMONIC DISTORTION PLUS NOISE
TOTAL HARMONIC DISTORTION PLUS NOISE
0.2
EFFICIENCY
0
0
V
R
V
R
SYNC = 800kHz
DD
L
f = 100Hz
DD
L
= 8Ω
= 8Ω
0.3
0.3
= 5V
0.1
= 3.3V
f = 1kHz
vs. OUTPUT POWER
vs. OUTPUT POWER
0.5
0.4
OUTPUT POWER (W)
OUTPUT POWER (W)
0.2
SYNC = 2MHz
V
f
R
IN
DD
L
0.8
= 1kHz
= 8Ω
0.5
0.3
= 3.3V
SYNC = 1.4MHz
1.0
0.6
0.4
1.3
f = 10kHz
0.5
1.5
0.6